./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.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/safe021_power.opt_pso.opt.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/safe021_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe021_power.opt_pso.opt.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 00:29:28,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:29:28,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:29:28,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:29:28,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:29:28,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:29:28,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:29:28,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:29:28,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:29:28,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:29:28,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:29:28,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:29:28,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:29:28,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:29:28,809 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:29:28,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:29:28,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:29:28,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:29:28,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:29:28,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:29:28,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:29:28,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:29:28,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:29:28,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:29:28,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:29:28,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:29:28,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:29:28,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:29:28,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:29:28,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:29:28,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:29:28,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:29:28,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:29:28,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:29:28,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:29:28,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:29:28,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:29:28,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:29:28,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:29:28,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:29:28,825 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:29:28,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:29:28,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:29:28,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:29:28,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:29:29,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:29:29,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:29:29,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:29:29,007 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:29:29,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-28 00:29:29,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:29:30,162 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:29:30,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-28 00:29:30,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6100c88/d9ecd22d6b8d4313aabdc44c687d3fcb/FLAG255d52325 [2024-06-28 00:29:30,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6100c88/d9ecd22d6b8d4313aabdc44c687d3fcb [2024-06-28 00:29:30,191 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:29:30,192 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:29:30,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe021_power.opt_pso.opt.yml/witness.yml [2024-06-28 00:29:30,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:29:30,264 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:29:30,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:29:30,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:29:30,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:29:30,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:29:30" (1/2) ... [2024-06-28 00:29:30,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4329e916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:29:30, skipping insertion in model container [2024-06-28 00:29:30,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:29:30" (1/2) ... [2024-06-28 00:29:30,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@350fe3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:29:30, skipping insertion in model container [2024-06-28 00:29:30,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:29:30" (2/2) ... [2024-06-28 00:29:30,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4329e916 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30, skipping insertion in model container [2024-06-28 00:29:30,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:29:30" (2/2) ... [2024-06-28 00:29:30,276 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:29:30,303 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:29:30,304 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:29:30,304 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:29:30,305 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:29:30,305 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:29:30,305 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-28 00:29:30,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:29:30,665 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:29:30,684 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:29:30,801 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:29:30,832 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:29:30,833 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30 WrapperNode [2024-06-28 00:29:30,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:29:30,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:29:30,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:29:30,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:29:30,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,896 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2024-06-28 00:29:30,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:29:30,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:29:30,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:29:30,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:29:30,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,928 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:29:30,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:29:30,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:29:30,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:29:30,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:29:30,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (1/1) ... [2024-06-28 00:29:30,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:29:30,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:29:30,992 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 00:29:31,024 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 00:29:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:29:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:29:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:29:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:29:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:29:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:29:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:29:31,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:29:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:29:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:29:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:29:31,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:29:31,055 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 00:29:31,182 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:29:31,183 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:29:31,543 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:29:31,544 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:29:31,703 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:29:31,703 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:29:31,704 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:29:31 BoogieIcfgContainer [2024-06-28 00:29:31,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:29:31,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:29:31,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:29:31,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:29:31,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:29:30" (1/4) ... [2024-06-28 00:29:31,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d7cc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:29:31, skipping insertion in model container [2024-06-28 00:29:31,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:29:30" (2/4) ... [2024-06-28 00:29:31,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d7cc2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:29:31, skipping insertion in model container [2024-06-28 00:29:31,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:29:30" (3/4) ... [2024-06-28 00:29:31,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d7cc2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:29:31, skipping insertion in model container [2024-06-28 00:29:31,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:29:31" (4/4) ... [2024-06-28 00:29:31,715 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_power.opt_pso.opt.i [2024-06-28 00:29:31,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:29:31,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:29:31,730 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:29:31,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:29:31,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:29:31,834 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 00:29:31,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:29:31,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:29:31,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:29:31,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 00:29:31,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:29:31,856 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;@2a7aad2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:29:31,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:29:31,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:29:31,860 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:29:31,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:29:31,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:31,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:29:31,861 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 00:29:31,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash 372110564, now seen corresponding path program 1 times [2024-06-28 00:29:31,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:31,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055730219] [2024-06-28 00:29:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055730219] [2024-06-28 00:29:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055730219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:33,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:29:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154178687] [2024-06-28 00:29:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:33,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:29:33,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:29:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:29:33,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 00:29:33,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 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 00:29:33,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:33,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 00:29:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:33,402 INFO L124 PetriNetUnfolderBase]: 1152/1755 cut-off events. [2024-06-28 00:29:33,403 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 00:29:33,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1755 events. 1152/1755 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8178 event pairs, 794 based on Foata normal form. 2/1710 useless extension candidates. Maximal degree in co-relation 3583. Up to 1738 conditions per place. [2024-06-28 00:29:33,418 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 32 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 00:29:33,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 171 flow [2024-06-28 00:29:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:29:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:29:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 00:29:33,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 00:29:33,430 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 72 transitions. [2024-06-28 00:29:33,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 171 flow [2024-06-28 00:29:33,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:33,434 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 00:29:33,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 00:29:33,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 00:29:33,442 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 00:29:33,442 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 00:29:33,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:33,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:33,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:29:33,443 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 00:29:33,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1117077401, now seen corresponding path program 1 times [2024-06-28 00:29:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499223840] [2024-06-28 00:29:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:33,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:34,122 INFO 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 00:29:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:34,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499223840] [2024-06-28 00:29:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499223840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:34,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:34,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:29:34,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789776592] [2024-06-28 00:29:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:29:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:29:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:29:34,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 00:29:34,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:29:34,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:34,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 00:29:34,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:34,506 INFO L124 PetriNetUnfolderBase]: 1395/2101 cut-off events. [2024-06-28 00:29:34,506 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-06-28 00:29:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 2101 events. 1395/2101 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9517 event pairs, 862 based on Foata normal form. 3/2102 useless extension candidates. Maximal degree in co-relation 4841. Up to 2073 conditions per place. [2024-06-28 00:29:34,522 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 42 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 00:29:34,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 252 flow [2024-06-28 00:29:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:29:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:29:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-28 00:29:34,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-28 00:29:34,524 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 89 transitions. [2024-06-28 00:29:34,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 252 flow [2024-06-28 00:29:34,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:34,527 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 150 flow [2024-06-28 00:29:34,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 00:29:34,528 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 00:29:34,528 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 150 flow [2024-06-28 00:29:34,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 00:29:34,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:34,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:29:34,529 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 00:29:34,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 269662507, now seen corresponding path program 1 times [2024-06-28 00:29:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096948094] [2024-06-28 00:29:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:35,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:35,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096948094] [2024-06-28 00:29:35,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096948094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:35,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:35,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:29:35,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482037301] [2024-06-28 00:29:35,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:35,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:29:35,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:29:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:29:35,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 00:29:35,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:35,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:35,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 00:29:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:35,481 INFO L124 PetriNetUnfolderBase]: 1383/2083 cut-off events. [2024-06-28 00:29:35,481 INFO L125 PetriNetUnfolderBase]: For 1050/1058 co-relation queries the response was YES. [2024-06-28 00:29:35,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 2083 events. 1383/2083 cut-off events. For 1050/1058 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9484 event pairs, 612 based on Foata normal form. 12/2093 useless extension candidates. Maximal degree in co-relation 5345. Up to 2025 conditions per place. [2024-06-28 00:29:35,491 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 50 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 00:29:35,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 338 flow [2024-06-28 00:29:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 00:29:35,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:29:35,494 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 150 flow. Second operand 5 states and 110 transitions. [2024-06-28 00:29:35,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 338 flow [2024-06-28 00:29:35,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 336 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:29:35,496 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 196 flow [2024-06-28 00:29:35,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 00:29:35,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 00:29:35,497 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 196 flow [2024-06-28 00:29:35,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:35,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:35,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:35,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:29:35,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:35,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash -265907840, now seen corresponding path program 1 times [2024-06-28 00:29:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836699418] [2024-06-28 00:29:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:36,644 INFO 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 00:29:36,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:36,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836699418] [2024-06-28 00:29:36,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836699418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:36,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:36,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032080868] [2024-06-28 00:29:36,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:36,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:36,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 00:29:36,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 00:29:36,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:36,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 00:29:36,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:37,144 INFO L124 PetriNetUnfolderBase]: 1374/2068 cut-off events. [2024-06-28 00:29:37,144 INFO L125 PetriNetUnfolderBase]: For 1915/1923 co-relation queries the response was YES. [2024-06-28 00:29:37,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 2068 events. 1374/2068 cut-off events. For 1915/1923 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9324 event pairs, 472 based on Foata normal form. 12/2078 useless extension candidates. Maximal degree in co-relation 5841. Up to 1980 conditions per place. [2024-06-28 00:29:37,158 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 54 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 00:29:37,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 402 flow [2024-06-28 00:29:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 00:29:37,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 00:29:37,161 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 196 flow. Second operand 6 states and 126 transitions. [2024-06-28 00:29:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 402 flow [2024-06-28 00:29:37,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 380 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:37,165 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 215 flow [2024-06-28 00:29:37,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 00:29:37,166 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-28 00:29:37,166 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 215 flow [2024-06-28 00:29:37,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 00:29:37,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:37,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:29:37,167 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 00:29:37,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1195026544, now seen corresponding path program 1 times [2024-06-28 00:29:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:37,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264157284] [2024-06-28 00:29:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:38,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264157284] [2024-06-28 00:29:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264157284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:38,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:29:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343902268] [2024-06-28 00:29:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:38,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:29:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:29:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:29:38,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:38,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 00:29:38,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:38,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:38,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:38,519 INFO L124 PetriNetUnfolderBase]: 1374/2099 cut-off events. [2024-06-28 00:29:38,519 INFO L125 PetriNetUnfolderBase]: For 3162/3179 co-relation queries the response was YES. [2024-06-28 00:29:38,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 2099 events. 1374/2099 cut-off events. For 3162/3179 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9731 event pairs, 916 based on Foata normal form. 5/2085 useless extension candidates. Maximal degree in co-relation 6231. Up to 2040 conditions per place. [2024-06-28 00:29:38,533 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 46 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-28 00:29:38,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 401 flow [2024-06-28 00:29:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:29:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:29:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 00:29:38,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 00:29:38,535 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 215 flow. Second operand 5 states and 88 transitions. [2024-06-28 00:29:38,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 401 flow [2024-06-28 00:29:38,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 368 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:29:38,540 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 285 flow [2024-06-28 00:29:38,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-06-28 00:29:38,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 00:29:38,541 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 285 flow [2024-06-28 00:29:38,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 00:29:38,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:38,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:29:38,542 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 00:29:38,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1608883590, now seen corresponding path program 1 times [2024-06-28 00:29:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:38,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063686535] [2024-06-28 00:29:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063686535] [2024-06-28 00:29:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063686535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121469903] [2024-06-28 00:29:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:39,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:29:39,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:39,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:39,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:29:39,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:40,165 INFO L124 PetriNetUnfolderBase]: 1601/2407 cut-off events. [2024-06-28 00:29:40,166 INFO L125 PetriNetUnfolderBase]: For 4433/4433 co-relation queries the response was YES. [2024-06-28 00:29:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 2407 events. 1601/2407 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10976 event pairs, 1073 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 7699. Up to 2363 conditions per place. [2024-06-28 00:29:40,180 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 60 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-28 00:29:40,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 515 flow [2024-06-28 00:29:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 00:29:40,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:29:40,182 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 285 flow. Second operand 6 states and 96 transitions. [2024-06-28 00:29:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 515 flow [2024-06-28 00:29:40,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 505 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 00:29:40,187 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 381 flow [2024-06-28 00:29:40,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 00:29:40,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-28 00:29:40,188 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 381 flow [2024-06-28 00:29:40,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:40,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:40,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:29:40,189 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 00:29:40,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1337309475, now seen corresponding path program 1 times [2024-06-28 00:29:40,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:40,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305586199] [2024-06-28 00:29:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:40,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:41,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305586199] [2024-06-28 00:29:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305586199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:41,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:41,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:41,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354580251] [2024-06-28 00:29:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:41,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:41,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:41,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:41,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:41,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:41,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:41,736 INFO L124 PetriNetUnfolderBase]: 1560/2372 cut-off events. [2024-06-28 00:29:41,737 INFO L125 PetriNetUnfolderBase]: For 6696/6712 co-relation queries the response was YES. [2024-06-28 00:29:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 2372 events. 1560/2372 cut-off events. For 6696/6712 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11024 event pairs, 895 based on Foata normal form. 8/2356 useless extension candidates. Maximal degree in co-relation 8412. Up to 2290 conditions per place. [2024-06-28 00:29:41,763 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-28 00:29:41,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 642 flow [2024-06-28 00:29:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:29:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:29:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 00:29:41,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:29:41,766 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 381 flow. Second operand 7 states and 119 transitions. [2024-06-28 00:29:41,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 642 flow [2024-06-28 00:29:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 635 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:41,773 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 479 flow [2024-06-28 00:29:41,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-28 00:29:41,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 00:29:41,774 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 479 flow [2024-06-28 00:29:41,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:41,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:41,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:29:41,776 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 00:29:41,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1669937297, now seen corresponding path program 2 times [2024-06-28 00:29:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421385776] [2024-06-28 00:29:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:42,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:42,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421385776] [2024-06-28 00:29:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421385776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:42,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:42,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145969923] [2024-06-28 00:29:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:42,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:42,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:42,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 479 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:42,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:42,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:42,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:43,366 INFO L124 PetriNetUnfolderBase]: 1559/2375 cut-off events. [2024-06-28 00:29:43,366 INFO L125 PetriNetUnfolderBase]: For 9051/9087 co-relation queries the response was YES. [2024-06-28 00:29:43,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9169 conditions, 2375 events. 1559/2375 cut-off events. For 9051/9087 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11036 event pairs, 892 based on Foata normal form. 14/2362 useless extension candidates. Maximal degree in co-relation 9133. Up to 2282 conditions per place. [2024-06-28 00:29:43,386 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 62 selfloop transitions, 25 changer transitions 0/94 dead transitions. [2024-06-28 00:29:43,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 780 flow [2024-06-28 00:29:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 00:29:43,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:29:43,388 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 479 flow. Second operand 6 states and 104 transitions. [2024-06-28 00:29:43,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 780 flow [2024-06-28 00:29:43,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 714 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:29:43,398 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 572 flow [2024-06-28 00:29:43,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=435, 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=572, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 00:29:43,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 00:29:43,400 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 572 flow [2024-06-28 00:29:43,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:43,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:43,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:43,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:29:43,401 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 00:29:43,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash -639115067, now seen corresponding path program 3 times [2024-06-28 00:29:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094981105] [2024-06-28 00:29:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:44,486 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 00:29:44,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:44,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094981105] [2024-06-28 00:29:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094981105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:29:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904498001] [2024-06-28 00:29:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:44,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:29:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:29:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:29:44,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:44,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:44,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:44,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:44,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:45,003 INFO L124 PetriNetUnfolderBase]: 1583/2411 cut-off events. [2024-06-28 00:29:45,003 INFO L125 PetriNetUnfolderBase]: For 11713/11752 co-relation queries the response was YES. [2024-06-28 00:29:45,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9949 conditions, 2411 events. 1583/2411 cut-off events. For 11713/11752 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11256 event pairs, 892 based on Foata normal form. 18/2402 useless extension candidates. Maximal degree in co-relation 9912. Up to 2286 conditions per place. [2024-06-28 00:29:45,021 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 58 selfloop transitions, 34 changer transitions 0/99 dead transitions. [2024-06-28 00:29:45,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 842 flow [2024-06-28 00:29:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:29:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:29:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 00:29:45,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:29:45,023 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 572 flow. Second operand 6 states and 104 transitions. [2024-06-28 00:29:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 842 flow [2024-06-28 00:29:45,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 812 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:45,034 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 692 flow [2024-06-28 00:29:45,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-28 00:29:45,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 00:29:45,035 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 692 flow [2024-06-28 00:29:45,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 00:29:45,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:45,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:45,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:29:45,037 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 00:29:45,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -639107131, now seen corresponding path program 1 times [2024-06-28 00:29:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:45,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97307319] [2024-06-28 00:29:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:46,523 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 00:29:46,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:46,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97307319] [2024-06-28 00:29:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97307319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:46,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:46,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561367975] [2024-06-28 00:29:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:46,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:46,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:46,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:46,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:46,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 692 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:46,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:46,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:46,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:47,199 INFO L124 PetriNetUnfolderBase]: 1651/2481 cut-off events. [2024-06-28 00:29:47,200 INFO L125 PetriNetUnfolderBase]: For 14963/15168 co-relation queries the response was YES. [2024-06-28 00:29:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10587 conditions, 2481 events. 1651/2481 cut-off events. For 14963/15168 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11733 event pairs, 973 based on Foata normal form. 2/2414 useless extension candidates. Maximal degree in co-relation 10546. Up to 2368 conditions per place. [2024-06-28 00:29:47,217 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 75 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-28 00:29:47,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 106 transitions, 942 flow [2024-06-28 00:29:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:29:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:29:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 00:29:47,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 00:29:47,219 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 692 flow. Second operand 7 states and 116 transitions. [2024-06-28 00:29:47,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 106 transitions, 942 flow [2024-06-28 00:29:47,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 870 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:47,228 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 680 flow [2024-06-28 00:29:47,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-28 00:29:47,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 00:29:47,229 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 680 flow [2024-06-28 00:29:47,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:47,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:47,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:47,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:29:47,230 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 00:29:47,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1014233227, now seen corresponding path program 1 times [2024-06-28 00:29:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4023713] [2024-06-28 00:29:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4023713] [2024-06-28 00:29:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4023713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749380985] [2024-06-28 00:29:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:48,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:48,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 680 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:48,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:48,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:48,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:48,736 INFO L124 PetriNetUnfolderBase]: 1580/2390 cut-off events. [2024-06-28 00:29:48,736 INFO L125 PetriNetUnfolderBase]: For 17667/17780 co-relation queries the response was YES. [2024-06-28 00:29:48,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 2390 events. 1580/2390 cut-off events. For 17667/17780 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11108 event pairs, 595 based on Foata normal form. 43/2381 useless extension candidates. Maximal degree in co-relation 10815. Up to 2233 conditions per place. [2024-06-28 00:29:48,757 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 86 selfloop transitions, 32 changer transitions 0/126 dead transitions. [2024-06-28 00:29:48,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 126 transitions, 1058 flow [2024-06-28 00:29:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:29:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:29:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 00:29:48,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 00:29:48,760 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 680 flow. Second operand 8 states and 138 transitions. [2024-06-28 00:29:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 126 transitions, 1058 flow [2024-06-28 00:29:48,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 1022 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:29:48,770 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 793 flow [2024-06-28 00:29:48,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-28 00:29:48,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-28 00:29:48,771 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 793 flow [2024-06-28 00:29:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:48,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:48,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:48,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:29:48,772 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 00:29:48,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1458796319, now seen corresponding path program 2 times [2024-06-28 00:29:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14622287] [2024-06-28 00:29:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:49,670 INFO 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 00:29:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:49,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14622287] [2024-06-28 00:29:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14622287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732400988] [2024-06-28 00:29:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:49,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:49,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 793 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:49,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:49,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:49,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:50,364 INFO L124 PetriNetUnfolderBase]: 1636/2473 cut-off events. [2024-06-28 00:29:50,364 INFO L125 PetriNetUnfolderBase]: For 21743/21911 co-relation queries the response was YES. [2024-06-28 00:29:50,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11954 conditions, 2473 events. 1636/2473 cut-off events. For 21743/21911 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11493 event pairs, 556 based on Foata normal form. 58/2475 useless extension candidates. Maximal degree in co-relation 11910. Up to 2290 conditions per place. [2024-06-28 00:29:50,381 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 89 selfloop transitions, 44 changer transitions 0/141 dead transitions. [2024-06-28 00:29:50,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 1285 flow [2024-06-28 00:29:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:29:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:29:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:29:50,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 00:29:50,383 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 793 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:29:50,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 1285 flow [2024-06-28 00:29:50,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 1224 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 00:29:50,397 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 1026 flow [2024-06-28 00:29:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1026, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-06-28 00:29:50,398 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 00:29:50,398 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 1026 flow [2024-06-28 00:29:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:50,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:29:50,399 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 00:29:50,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1491984485, now seen corresponding path program 1 times [2024-06-28 00:29:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:50,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22420575] [2024-06-28 00:29:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:50,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:51,482 INFO 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 00:29:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:51,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22420575] [2024-06-28 00:29:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22420575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027079925] [2024-06-28 00:29:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:51,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:51,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:29:51,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 1026 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:51,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:51,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:29:51,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:52,190 INFO L124 PetriNetUnfolderBase]: 1779/2667 cut-off events. [2024-06-28 00:29:52,190 INFO L125 PetriNetUnfolderBase]: For 22954/22954 co-relation queries the response was YES. [2024-06-28 00:29:52,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13253 conditions, 2667 events. 1779/2667 cut-off events. For 22954/22954 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12297 event pairs, 814 based on Foata normal form. 2/2668 useless extension candidates. Maximal degree in co-relation 13205. Up to 2591 conditions per place. [2024-06-28 00:29:52,208 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 129 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2024-06-28 00:29:52,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 157 transitions, 1578 flow [2024-06-28 00:29:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:29:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:29:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:29:52,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 00:29:52,210 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 1026 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:29:52,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 157 transitions, 1578 flow [2024-06-28 00:29:52,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1502 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:52,228 INFO L231 Difference]: Finished difference. Result has 102 places, 133 transitions, 1221 flow [2024-06-28 00:29:52,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1221, PETRI_PLACES=102, PETRI_TRANSITIONS=133} [2024-06-28 00:29:52,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-28 00:29:52,229 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 133 transitions, 1221 flow [2024-06-28 00:29:52,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:52,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:52,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:52,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:29:52,230 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 00:29:52,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1458916289, now seen corresponding path program 3 times [2024-06-28 00:29:52,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:52,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973031434] [2024-06-28 00:29:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:52,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973031434] [2024-06-28 00:29:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973031434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486736403] [2024-06-28 00:29:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:53,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:53,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 133 transitions, 1221 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:53,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:53,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:53,963 INFO L124 PetriNetUnfolderBase]: 1704/2579 cut-off events. [2024-06-28 00:29:53,963 INFO L125 PetriNetUnfolderBase]: For 30634/30731 co-relation queries the response was YES. [2024-06-28 00:29:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 2579 events. 1704/2579 cut-off events. For 30634/30731 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12063 event pairs, 537 based on Foata normal form. 41/2564 useless extension candidates. Maximal degree in co-relation 13813. Up to 2295 conditions per place. [2024-06-28 00:29:53,987 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 94 selfloop transitions, 59 changer transitions 0/165 dead transitions. [2024-06-28 00:29:53,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1741 flow [2024-06-28 00:29:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:29:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:29:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:29:53,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-28 00:29:53,989 INFO L175 Difference]: Start difference. First operand has 102 places, 133 transitions, 1221 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:29:53,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1741 flow [2024-06-28 00:29:54,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 1713 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 00:29:54,010 INFO L231 Difference]: Finished difference. Result has 110 places, 139 transitions, 1436 flow [2024-06-28 00:29:54,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=110, PETRI_TRANSITIONS=139} [2024-06-28 00:29:54,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 00:29:54,011 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 139 transitions, 1436 flow [2024-06-28 00:29:54,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:54,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:54,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:54,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:29:54,012 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 00:29:54,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1655836267, now seen corresponding path program 4 times [2024-06-28 00:29:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719725916] [2024-06-28 00:29:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:54,944 INFO 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 00:29:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719725916] [2024-06-28 00:29:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719725916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:54,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822454261] [2024-06-28 00:29:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:54,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:54,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:55,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 139 transitions, 1436 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:55,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:55,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:55,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:55,732 INFO L124 PetriNetUnfolderBase]: 1750/2651 cut-off events. [2024-06-28 00:29:55,732 INFO L125 PetriNetUnfolderBase]: For 37288/37446 co-relation queries the response was YES. [2024-06-28 00:29:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15163 conditions, 2651 events. 1750/2651 cut-off events. For 37288/37446 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12450 event pairs, 543 based on Foata normal form. 62/2649 useless extension candidates. Maximal degree in co-relation 15107. Up to 2421 conditions per place. [2024-06-28 00:29:55,751 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 107 selfloop transitions, 58 changer transitions 0/177 dead transitions. [2024-06-28 00:29:55,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 177 transitions, 2029 flow [2024-06-28 00:29:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:29:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:29:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:29:55,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 00:29:55,754 INFO L175 Difference]: Start difference. First operand has 110 places, 139 transitions, 1436 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:29:55,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 177 transitions, 2029 flow [2024-06-28 00:29:55,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 177 transitions, 1914 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:29:55,779 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1695 flow [2024-06-28 00:29:55,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1695, PETRI_PLACES=114, PETRI_TRANSITIONS=159} [2024-06-28 00:29:55,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-28 00:29:55,780 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1695 flow [2024-06-28 00:29:55,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:55,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:55,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:55,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:29:55,781 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 00:29:55,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1655840917, now seen corresponding path program 5 times [2024-06-28 00:29:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4300409] [2024-06-28 00:29:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:56,839 INFO 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 00:29:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4300409] [2024-06-28 00:29:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4300409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490363150] [2024-06-28 00:29:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:56,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:56,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:56,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:29:56,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 159 transitions, 1695 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:56,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:56,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:29:56,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:57,647 INFO L124 PetriNetUnfolderBase]: 1805/2732 cut-off events. [2024-06-28 00:29:57,647 INFO L125 PetriNetUnfolderBase]: For 43163/43344 co-relation queries the response was YES. [2024-06-28 00:29:57,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16372 conditions, 2732 events. 1805/2732 cut-off events. For 43163/43344 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12920 event pairs, 549 based on Foata normal form. 71/2739 useless extension candidates. Maximal degree in co-relation 16314. Up to 2422 conditions per place. [2024-06-28 00:29:57,673 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 111 selfloop transitions, 68 changer transitions 0/191 dead transitions. [2024-06-28 00:29:57,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 2334 flow [2024-06-28 00:29:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:29:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:29:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 00:29:57,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 00:29:57,675 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1695 flow. Second operand 7 states and 129 transitions. [2024-06-28 00:29:57,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 2334 flow [2024-06-28 00:29:57,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 2269 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:29:57,713 INFO L231 Difference]: Finished difference. Result has 120 places, 171 transitions, 1987 flow [2024-06-28 00:29:57,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1987, PETRI_PLACES=120, PETRI_TRANSITIONS=171} [2024-06-28 00:29:57,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 00:29:57,714 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 171 transitions, 1987 flow [2024-06-28 00:29:57,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:29:57,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:57,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:57,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:29:57,715 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:57,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1655841103, now seen corresponding path program 2 times [2024-06-28 00:29:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137037172] [2024-06-28 00:29:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:58,732 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 00:29:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137037172] [2024-06-28 00:29:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137037172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:58,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:29:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978845463] [2024-06-28 00:29:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:58,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:29:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:29:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:29:58,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:29:58,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 171 transitions, 1987 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:58,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:58,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:29:58,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:59,533 INFO L124 PetriNetUnfolderBase]: 1983/2959 cut-off events. [2024-06-28 00:29:59,533 INFO L125 PetriNetUnfolderBase]: For 45047/45049 co-relation queries the response was YES. [2024-06-28 00:29:59,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17978 conditions, 2959 events. 1983/2959 cut-off events. For 45047/45049 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13779 event pairs, 831 based on Foata normal form. 4/2961 useless extension candidates. Maximal degree in co-relation 17917. Up to 2879 conditions per place. [2024-06-28 00:29:59,557 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 168 selfloop transitions, 29 changer transitions 0/200 dead transitions. [2024-06-28 00:29:59,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 200 transitions, 2523 flow [2024-06-28 00:29:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:29:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:29:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 00:29:59,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 00:29:59,559 INFO L175 Difference]: Start difference. First operand has 120 places, 171 transitions, 1987 flow. Second operand 7 states and 113 transitions. [2024-06-28 00:29:59,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 200 transitions, 2523 flow [2024-06-28 00:29:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 200 transitions, 2436 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:29:59,597 INFO L231 Difference]: Finished difference. Result has 125 places, 182 transitions, 2078 flow [2024-06-28 00:29:59,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2078, PETRI_PLACES=125, PETRI_TRANSITIONS=182} [2024-06-28 00:29:59,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-28 00:29:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 182 transitions, 2078 flow [2024-06-28 00:29:59,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:59,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:59,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:29:59,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1662270193, now seen corresponding path program 3 times [2024-06-28 00:29:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:59,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704471937] [2024-06-28 00:29:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:00,701 INFO 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 00:30:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704471937] [2024-06-28 00:30:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704471937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187785124] [2024-06-28 00:30:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:00,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:00,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:00,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:00,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 182 transitions, 2078 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:00,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:00,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:00,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:01,408 INFO L124 PetriNetUnfolderBase]: 1994/2977 cut-off events. [2024-06-28 00:30:01,408 INFO L125 PetriNetUnfolderBase]: For 49080/49084 co-relation queries the response was YES. [2024-06-28 00:30:01,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18717 conditions, 2977 events. 1994/2977 cut-off events. For 49080/49084 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13874 event pairs, 833 based on Foata normal form. 6/2981 useless extension candidates. Maximal degree in co-relation 18653. Up to 2830 conditions per place. [2024-06-28 00:30:01,438 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 163 selfloop transitions, 44 changer transitions 0/210 dead transitions. [2024-06-28 00:30:01,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 210 transitions, 2698 flow [2024-06-28 00:30:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:30:01,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 00:30:01,442 INFO L175 Difference]: Start difference. First operand has 125 places, 182 transitions, 2078 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:30:01,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 210 transitions, 2698 flow [2024-06-28 00:30:01,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 210 transitions, 2676 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 00:30:01,488 INFO L231 Difference]: Finished difference. Result has 133 places, 190 transitions, 2241 flow [2024-06-28 00:30:01,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2241, PETRI_PLACES=133, PETRI_TRANSITIONS=190} [2024-06-28 00:30:01,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 00:30:01,489 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 190 transitions, 2241 flow [2024-06-28 00:30:01,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:01,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:01,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:30:01,490 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:01,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash 866303261, now seen corresponding path program 6 times [2024-06-28 00:30:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:01,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195830583] [2024-06-28 00:30:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195830583] [2024-06-28 00:30:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195830583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:02,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:02,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614785857] [2024-06-28 00:30:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:02,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:02,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 190 transitions, 2241 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:30:02,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:02,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:02,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:03,453 INFO L124 PetriNetUnfolderBase]: 1837/2782 cut-off events. [2024-06-28 00:30:03,454 INFO L125 PetriNetUnfolderBase]: For 59190/59350 co-relation queries the response was YES. [2024-06-28 00:30:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18625 conditions, 2782 events. 1837/2782 cut-off events. For 59190/59350 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13174 event pairs, 563 based on Foata normal form. 81/2798 useless extension candidates. Maximal degree in co-relation 18557. Up to 2322 conditions per place. [2024-06-28 00:30:03,479 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 107 selfloop transitions, 92 changer transitions 0/218 dead transitions. [2024-06-28 00:30:03,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 218 transitions, 2961 flow [2024-06-28 00:30:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:30:03,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 00:30:03,481 INFO L175 Difference]: Start difference. First operand has 133 places, 190 transitions, 2241 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:30:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 218 transitions, 2961 flow [2024-06-28 00:30:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 218 transitions, 2863 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:03,532 INFO L231 Difference]: Finished difference. Result has 136 places, 196 transitions, 2463 flow [2024-06-28 00:30:03,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2463, PETRI_PLACES=136, PETRI_TRANSITIONS=196} [2024-06-28 00:30:03,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 00:30:03,533 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 196 transitions, 2463 flow [2024-06-28 00:30:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 00:30:03,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:03,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:03,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:30:03,534 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:03,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -51079195, now seen corresponding path program 4 times [2024-06-28 00:30:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:03,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460969004] [2024-06-28 00:30:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:03,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:04,648 INFO 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 00:30:04,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460969004] [2024-06-28 00:30:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460969004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:04,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:04,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594803297] [2024-06-28 00:30:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:04,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 196 transitions, 2463 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:04,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:04,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:04,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:05,415 INFO L124 PetriNetUnfolderBase]: 1981/2959 cut-off events. [2024-06-28 00:30:05,416 INFO L125 PetriNetUnfolderBase]: For 59019/59023 co-relation queries the response was YES. [2024-06-28 00:30:05,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19743 conditions, 2959 events. 1981/2959 cut-off events. For 59019/59023 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13827 event pairs, 829 based on Foata normal form. 6/2963 useless extension candidates. Maximal degree in co-relation 19674. Up to 2814 conditions per place. [2024-06-28 00:30:05,447 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 164 selfloop transitions, 48 changer transitions 0/215 dead transitions. [2024-06-28 00:30:05,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 215 transitions, 2956 flow [2024-06-28 00:30:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 00:30:05,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 00:30:05,449 INFO L175 Difference]: Start difference. First operand has 136 places, 196 transitions, 2463 flow. Second operand 8 states and 121 transitions. [2024-06-28 00:30:05,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 215 transitions, 2956 flow [2024-06-28 00:30:05,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 215 transitions, 2715 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:05,513 INFO L231 Difference]: Finished difference. Result has 140 places, 197 transitions, 2333 flow [2024-06-28 00:30:05,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2333, PETRI_PLACES=140, PETRI_TRANSITIONS=197} [2024-06-28 00:30:05,513 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 00:30:05,514 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 197 transitions, 2333 flow [2024-06-28 00:30:05,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:05,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:05,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:05,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:30:05,515 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:05,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -51070267, now seen corresponding path program 1 times [2024-06-28 00:30:05,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:05,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321543009] [2024-06-28 00:30:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321543009] [2024-06-28 00:30:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321543009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:07,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:07,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983270794] [2024-06-28 00:30:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:07,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:07,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 197 transitions, 2333 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:07,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:07,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:07,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:07,799 INFO L124 PetriNetUnfolderBase]: 1973/2950 cut-off events. [2024-06-28 00:30:07,800 INFO L125 PetriNetUnfolderBase]: For 58863/58863 co-relation queries the response was YES. [2024-06-28 00:30:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19205 conditions, 2950 events. 1973/2950 cut-off events. For 58863/58863 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13763 event pairs, 885 based on Foata normal form. 4/2953 useless extension candidates. Maximal degree in co-relation 19135. Up to 2870 conditions per place. [2024-06-28 00:30:07,822 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 201 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-28 00:30:07,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 222 transitions, 2865 flow [2024-06-28 00:30:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:30:07,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 00:30:07,824 INFO L175 Difference]: Start difference. First operand has 140 places, 197 transitions, 2333 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:30:07,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 222 transitions, 2865 flow [2024-06-28 00:30:07,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 222 transitions, 2802 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:07,870 INFO L231 Difference]: Finished difference. Result has 144 places, 199 transitions, 2333 flow [2024-06-28 00:30:07,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2333, PETRI_PLACES=144, PETRI_TRANSITIONS=199} [2024-06-28 00:30:07,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 00:30:07,885 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 199 transitions, 2333 flow [2024-06-28 00:30:07,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:07,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:07,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:07,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:30:07,900 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:07,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1785116638, now seen corresponding path program 1 times [2024-06-28 00:30:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685169228] [2024-06-28 00:30:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:08,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685169228] [2024-06-28 00:30:08,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685169228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:08,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:08,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:08,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238014074] [2024-06-28 00:30:08,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:08,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:08,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:08,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:08,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:08,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:30:08,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 199 transitions, 2333 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:08,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:08,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:30:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:09,497 INFO L124 PetriNetUnfolderBase]: 1741/2674 cut-off events. [2024-06-28 00:30:09,497 INFO L125 PetriNetUnfolderBase]: For 69266/69483 co-relation queries the response was YES. [2024-06-28 00:30:09,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18168 conditions, 2674 events. 1741/2674 cut-off events. For 69266/69483 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12857 event pairs, 536 based on Foata normal form. 113/2729 useless extension candidates. Maximal degree in co-relation 18097. Up to 2273 conditions per place. [2024-06-28 00:30:09,520 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 107 selfloop transitions, 83 changer transitions 0/232 dead transitions. [2024-06-28 00:30:09,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 2959 flow [2024-06-28 00:30:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 00:30:09,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 00:30:09,522 INFO L175 Difference]: Start difference. First operand has 144 places, 199 transitions, 2333 flow. Second operand 7 states and 128 transitions. [2024-06-28 00:30:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 2959 flow [2024-06-28 00:30:09,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 232 transitions, 2914 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:09,575 INFO L231 Difference]: Finished difference. Result has 146 places, 212 transitions, 2719 flow [2024-06-28 00:30:09,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2288, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2719, PETRI_PLACES=146, PETRI_TRANSITIONS=212} [2024-06-28 00:30:09,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-28 00:30:09,575 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 212 transitions, 2719 flow [2024-06-28 00:30:09,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:09,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:09,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:30:09,576 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:09,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1342292330, now seen corresponding path program 2 times [2024-06-28 00:30:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388711342] [2024-06-28 00:30:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:10,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:10,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388711342] [2024-06-28 00:30:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388711342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:10,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093479806] [2024-06-28 00:30:10,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:10,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:10,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:10,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 212 transitions, 2719 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:10,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:10,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:11,313 INFO L124 PetriNetUnfolderBase]: 1891/2862 cut-off events. [2024-06-28 00:30:11,314 INFO L125 PetriNetUnfolderBase]: For 79457/79733 co-relation queries the response was YES. [2024-06-28 00:30:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20284 conditions, 2862 events. 1891/2862 cut-off events. For 79457/79733 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13529 event pairs, 582 based on Foata normal form. 162/2969 useless extension candidates. Maximal degree in co-relation 20211. Up to 2557 conditions per place. [2024-06-28 00:30:11,340 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 154 selfloop transitions, 89 changer transitions 0/264 dead transitions. [2024-06-28 00:30:11,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 264 transitions, 3689 flow [2024-06-28 00:30:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:30:11,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 00:30:11,342 INFO L175 Difference]: Start difference. First operand has 146 places, 212 transitions, 2719 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:30:11,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 264 transitions, 3689 flow [2024-06-28 00:30:11,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 264 transitions, 3554 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 00:30:11,417 INFO L231 Difference]: Finished difference. Result has 152 places, 233 transitions, 3183 flow [2024-06-28 00:30:11,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3183, PETRI_PLACES=152, PETRI_TRANSITIONS=233} [2024-06-28 00:30:11,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-28 00:30:11,418 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 233 transitions, 3183 flow [2024-06-28 00:30:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:11,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:11,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:30:11,418 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:11,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1376496025, now seen corresponding path program 1 times [2024-06-28 00:30:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553968938] [2024-06-28 00:30:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553968938] [2024-06-28 00:30:12,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553968938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:12,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:12,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288299194] [2024-06-28 00:30:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:12,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:12,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 233 transitions, 3183 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:12,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:12,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:12,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:12,965 INFO L124 PetriNetUnfolderBase]: 2138/3182 cut-off events. [2024-06-28 00:30:12,965 INFO L125 PetriNetUnfolderBase]: For 78683/78685 co-relation queries the response was YES. [2024-06-28 00:30:12,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22357 conditions, 3182 events. 2138/3182 cut-off events. For 78683/78685 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14778 event pairs, 602 based on Foata normal form. 4/3185 useless extension candidates. Maximal degree in co-relation 22283. Up to 2997 conditions per place. [2024-06-28 00:30:12,993 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 239 selfloop transitions, 62 changer transitions 0/304 dead transitions. [2024-06-28 00:30:12,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 304 transitions, 4494 flow [2024-06-28 00:30:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:30:12,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:30:12,995 INFO L175 Difference]: Start difference. First operand has 152 places, 233 transitions, 3183 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:30:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 304 transitions, 4494 flow [2024-06-28 00:30:13,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 304 transitions, 4227 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:13,087 INFO L231 Difference]: Finished difference. Result has 159 places, 274 transitions, 3795 flow [2024-06-28 00:30:13,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3795, PETRI_PLACES=159, PETRI_TRANSITIONS=274} [2024-06-28 00:30:13,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 00:30:13,088 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 274 transitions, 3795 flow [2024-06-28 00:30:13,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:13,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:13,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:13,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:30:13,089 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:13,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1077371332, now seen corresponding path program 3 times [2024-06-28 00:30:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:13,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095871036] [2024-06-28 00:30:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:14,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095871036] [2024-06-28 00:30:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095871036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:14,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:14,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717582276] [2024-06-28 00:30:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:14,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:14,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:14,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 274 transitions, 3795 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:14,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:14,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:14,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:14,946 INFO L124 PetriNetUnfolderBase]: 2024/3068 cut-off events. [2024-06-28 00:30:14,947 INFO L125 PetriNetUnfolderBase]: For 89894/90013 co-relation queries the response was YES. [2024-06-28 00:30:14,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22677 conditions, 3068 events. 2024/3068 cut-off events. For 89894/90013 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14767 event pairs, 525 based on Foata normal form. 25/3025 useless extension candidates. Maximal degree in co-relation 22598. Up to 2676 conditions per place. [2024-06-28 00:30:14,970 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 174 selfloop transitions, 121 changer transitions 0/321 dead transitions. [2024-06-28 00:30:14,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 321 transitions, 4821 flow [2024-06-28 00:30:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:30:14,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 00:30:14,972 INFO L175 Difference]: Start difference. First operand has 159 places, 274 transitions, 3795 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:30:14,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 321 transitions, 4821 flow [2024-06-28 00:30:15,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 321 transitions, 4738 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 00:30:15,070 INFO L231 Difference]: Finished difference. Result has 165 places, 296 transitions, 4364 flow [2024-06-28 00:30:15,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4364, PETRI_PLACES=165, PETRI_TRANSITIONS=296} [2024-06-28 00:30:15,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-28 00:30:15,071 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 296 transitions, 4364 flow [2024-06-28 00:30:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:15,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:15,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:15,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:30:15,072 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:15,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2021953577, now seen corresponding path program 2 times [2024-06-28 00:30:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:15,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777559184] [2024-06-28 00:30:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777559184] [2024-06-28 00:30:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777559184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:15,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410951164] [2024-06-28 00:30:15,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:15,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:15,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 296 transitions, 4364 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:15,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:15,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:15,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:16,713 INFO L124 PetriNetUnfolderBase]: 2218/3295 cut-off events. [2024-06-28 00:30:16,713 INFO L125 PetriNetUnfolderBase]: For 90564/90570 co-relation queries the response was YES. [2024-06-28 00:30:16,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24247 conditions, 3295 events. 2218/3295 cut-off events. For 90564/90570 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15349 event pairs, 570 based on Foata normal form. 8/3302 useless extension candidates. Maximal degree in co-relation 24166. Up to 3106 conditions per place. [2024-06-28 00:30:16,745 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 266 selfloop transitions, 70 changer transitions 0/339 dead transitions. [2024-06-28 00:30:16,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 339 transitions, 5273 flow [2024-06-28 00:30:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:30:16,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-28 00:30:16,747 INFO L175 Difference]: Start difference. First operand has 165 places, 296 transitions, 4364 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:30:16,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 339 transitions, 5273 flow [2024-06-28 00:30:16,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 339 transitions, 5116 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:16,857 INFO L231 Difference]: Finished difference. Result has 171 places, 311 transitions, 4530 flow [2024-06-28 00:30:16,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4530, PETRI_PLACES=171, PETRI_TRANSITIONS=311} [2024-06-28 00:30:16,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 00:30:16,858 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 311 transitions, 4530 flow [2024-06-28 00:30:16,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:16,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:16,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:30:16,858 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:16,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2018228927, now seen corresponding path program 3 times [2024-06-28 00:30:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:16,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118355033] [2024-06-28 00:30:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:17,784 INFO 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 00:30:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118355033] [2024-06-28 00:30:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118355033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001782651] [2024-06-28 00:30:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:17,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:17,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:17,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 311 transitions, 4530 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:17,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:17,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:17,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:18,600 INFO L124 PetriNetUnfolderBase]: 2293/3402 cut-off events. [2024-06-28 00:30:18,601 INFO L125 PetriNetUnfolderBase]: For 99882/99884 co-relation queries the response was YES. [2024-06-28 00:30:18,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25662 conditions, 3402 events. 2293/3402 cut-off events. For 99882/99884 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15861 event pairs, 557 based on Foata normal form. 4/3405 useless extension candidates. Maximal degree in co-relation 25579. Up to 3024 conditions per place. [2024-06-28 00:30:18,637 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 255 selfloop transitions, 113 changer transitions 0/371 dead transitions. [2024-06-28 00:30:18,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 371 transitions, 5918 flow [2024-06-28 00:30:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:30:18,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 00:30:18,639 INFO L175 Difference]: Start difference. First operand has 171 places, 311 transitions, 4530 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:30:18,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 371 transitions, 5918 flow [2024-06-28 00:30:18,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 371 transitions, 5884 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 00:30:18,760 INFO L231 Difference]: Finished difference. Result has 181 places, 341 transitions, 5316 flow [2024-06-28 00:30:18,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4496, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5316, PETRI_PLACES=181, PETRI_TRANSITIONS=341} [2024-06-28 00:30:18,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 00:30:18,761 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 341 transitions, 5316 flow [2024-06-28 00:30:18,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:18,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:18,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:18,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:30:18,762 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:18,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash -993120400, now seen corresponding path program 1 times [2024-06-28 00:30:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171655397] [2024-06-28 00:30:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:19,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171655397] [2024-06-28 00:30:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171655397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:19,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:19,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821843225] [2024-06-28 00:30:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:20,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:20,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 341 transitions, 5316 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:20,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:20,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:20,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:20,885 INFO L124 PetriNetUnfolderBase]: 2332/3460 cut-off events. [2024-06-28 00:30:20,885 INFO L125 PetriNetUnfolderBase]: For 111389/111391 co-relation queries the response was YES. [2024-06-28 00:30:20,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27367 conditions, 3460 events. 2332/3460 cut-off events. For 111389/111391 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16227 event pairs, 504 based on Foata normal form. 8/3467 useless extension candidates. Maximal degree in co-relation 27279. Up to 3023 conditions per place. [2024-06-28 00:30:20,919 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 258 selfloop transitions, 115 changer transitions 0/376 dead transitions. [2024-06-28 00:30:20,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 376 transitions, 6344 flow [2024-06-28 00:30:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 00:30:20,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:30:20,921 INFO L175 Difference]: Start difference. First operand has 181 places, 341 transitions, 5316 flow. Second operand 9 states and 153 transitions. [2024-06-28 00:30:20,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 376 transitions, 6344 flow [2024-06-28 00:30:21,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 376 transitions, 6226 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:21,170 INFO L231 Difference]: Finished difference. Result has 186 places, 345 transitions, 5497 flow [2024-06-28 00:30:21,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5497, PETRI_PLACES=186, PETRI_TRANSITIONS=345} [2024-06-28 00:30:21,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-28 00:30:21,171 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 345 transitions, 5497 flow [2024-06-28 00:30:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:30:21,171 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:21,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2018234507, now seen corresponding path program 4 times [2024-06-28 00:30:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454888732] [2024-06-28 00:30:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:22,076 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 00:30:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:22,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454888732] [2024-06-28 00:30:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454888732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:22,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:22,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:22,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783276143] [2024-06-28 00:30:22,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:22,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:22,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:22,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 345 transitions, 5497 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:22,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:22,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:22,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:22,935 INFO L124 PetriNetUnfolderBase]: 2324/3448 cut-off events. [2024-06-28 00:30:22,935 INFO L125 PetriNetUnfolderBase]: For 114628/114630 co-relation queries the response was YES. [2024-06-28 00:30:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28010 conditions, 3448 events. 2324/3448 cut-off events. For 114628/114630 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16111 event pairs, 518 based on Foata normal form. 4/3451 useless extension candidates. Maximal degree in co-relation 27920. Up to 3072 conditions per place. [2024-06-28 00:30:22,968 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 273 selfloop transitions, 102 changer transitions 0/378 dead transitions. [2024-06-28 00:30:22,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 378 transitions, 6517 flow [2024-06-28 00:30:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:30:22,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 00:30:22,970 INFO L175 Difference]: Start difference. First operand has 186 places, 345 transitions, 5497 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:30:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 378 transitions, 6517 flow [2024-06-28 00:30:23,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 378 transitions, 6261 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:30:23,141 INFO L231 Difference]: Finished difference. Result has 188 places, 348 transitions, 5504 flow [2024-06-28 00:30:23,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5504, PETRI_PLACES=188, PETRI_TRANSITIONS=348} [2024-06-28 00:30:23,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 00:30:23,142 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 348 transitions, 5504 flow [2024-06-28 00:30:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:23,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:23,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:30:23,143 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:23,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1504236366, now seen corresponding path program 4 times [2024-06-28 00:30:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211003990] [2024-06-28 00:30:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:24,160 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 00:30:24,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:24,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211003990] [2024-06-28 00:30:24,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211003990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:24,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:24,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:24,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8272704] [2024-06-28 00:30:24,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:24,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:24,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:24,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:24,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:24,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:24,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 348 transitions, 5504 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:24,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:24,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:25,157 INFO L124 PetriNetUnfolderBase]: 2229/3344 cut-off events. [2024-06-28 00:30:25,158 INFO L125 PetriNetUnfolderBase]: For 132349/132449 co-relation queries the response was YES. [2024-06-28 00:30:25,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27997 conditions, 3344 events. 2229/3344 cut-off events. For 132349/132449 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16089 event pairs, 482 based on Foata normal form. 24/3287 useless extension candidates. Maximal degree in co-relation 27906. Up to 2921 conditions per place. [2024-06-28 00:30:25,198 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 208 selfloop transitions, 125 changer transitions 0/372 dead transitions. [2024-06-28 00:30:25,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 372 transitions, 6349 flow [2024-06-28 00:30:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 00:30:25,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 00:30:25,199 INFO L175 Difference]: Start difference. First operand has 188 places, 348 transitions, 5504 flow. Second operand 8 states and 134 transitions. [2024-06-28 00:30:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 372 transitions, 6349 flow [2024-06-28 00:30:25,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 372 transitions, 6176 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:25,390 INFO L231 Difference]: Finished difference. Result has 191 places, 354 transitions, 5760 flow [2024-06-28 00:30:25,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5331, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5760, PETRI_PLACES=191, PETRI_TRANSITIONS=354} [2024-06-28 00:30:25,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 00:30:25,391 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 354 transitions, 5760 flow [2024-06-28 00:30:25,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:25,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:25,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:25,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:30:25,392 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:25,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash -208682485, now seen corresponding path program 5 times [2024-06-28 00:30:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960273417] [2024-06-28 00:30:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:26,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960273417] [2024-06-28 00:30:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960273417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841196751] [2024-06-28 00:30:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:26,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:26,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 354 transitions, 5760 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:26,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:27,201 INFO L124 PetriNetUnfolderBase]: 2370/3516 cut-off events. [2024-06-28 00:30:27,201 INFO L125 PetriNetUnfolderBase]: For 130129/130131 co-relation queries the response was YES. [2024-06-28 00:30:27,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28924 conditions, 3516 events. 2370/3516 cut-off events. For 130129/130131 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16528 event pairs, 523 based on Foata normal form. 4/3516 useless extension candidates. Maximal degree in co-relation 28832. Up to 3324 conditions per place. [2024-06-28 00:30:27,238 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 316 selfloop transitions, 74 changer transitions 0/393 dead transitions. [2024-06-28 00:30:27,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 393 transitions, 6820 flow [2024-06-28 00:30:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:30:27,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:30:27,240 INFO L175 Difference]: Start difference. First operand has 191 places, 354 transitions, 5760 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:30:27,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 393 transitions, 6820 flow [2024-06-28 00:30:27,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 393 transitions, 6612 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:27,426 INFO L231 Difference]: Finished difference. Result has 196 places, 371 transitions, 5956 flow [2024-06-28 00:30:27,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5956, PETRI_PLACES=196, PETRI_TRANSITIONS=371} [2024-06-28 00:30:27,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-28 00:30:27,427 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 371 transitions, 5956 flow [2024-06-28 00:30:27,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:27,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:27,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:30:27,428 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:27,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -208538335, now seen corresponding path program 6 times [2024-06-28 00:30:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882890652] [2024-06-28 00:30:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:28,418 INFO 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 00:30:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882890652] [2024-06-28 00:30:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882890652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043760815] [2024-06-28 00:30:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:28,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:28,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:28,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 371 transitions, 5956 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:28,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:28,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:28,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:29,412 INFO L124 PetriNetUnfolderBase]: 2524/3735 cut-off events. [2024-06-28 00:30:29,412 INFO L125 PetriNetUnfolderBase]: For 144617/144619 co-relation queries the response was YES. [2024-06-28 00:30:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31247 conditions, 3735 events. 2524/3735 cut-off events. For 144617/144619 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17697 event pairs, 525 based on Foata normal form. 4/3735 useless extension candidates. Maximal degree in co-relation 31154. Up to 3245 conditions per place. [2024-06-28 00:30:29,448 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 332 selfloop transitions, 102 changer transitions 0/437 dead transitions. [2024-06-28 00:30:29,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 437 transitions, 7676 flow [2024-06-28 00:30:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:30:29,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:30:29,450 INFO L175 Difference]: Start difference. First operand has 196 places, 371 transitions, 5956 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:30:29,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 437 transitions, 7676 flow [2024-06-28 00:30:29,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 437 transitions, 7632 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 00:30:29,630 INFO L231 Difference]: Finished difference. Result has 204 places, 403 transitions, 6608 flow [2024-06-28 00:30:29,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5912, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6608, PETRI_PLACES=204, PETRI_TRANSITIONS=403} [2024-06-28 00:30:29,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-28 00:30:29,631 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 403 transitions, 6608 flow [2024-06-28 00:30:29,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:29,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:29,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:30:29,632 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:29,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1508045646, now seen corresponding path program 5 times [2024-06-28 00:30:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969741313] [2024-06-28 00:30:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:30,676 INFO 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 00:30:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969741313] [2024-06-28 00:30:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969741313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661630221] [2024-06-28 00:30:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:30,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:30,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 403 transitions, 6608 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:30,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:30,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:30,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:31,713 INFO L124 PetriNetUnfolderBase]: 2422/3614 cut-off events. [2024-06-28 00:30:31,713 INFO L125 PetriNetUnfolderBase]: For 170565/170663 co-relation queries the response was YES. [2024-06-28 00:30:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32701 conditions, 3614 events. 2422/3614 cut-off events. For 170565/170663 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17475 event pairs, 488 based on Foata normal form. 26/3556 useless extension candidates. Maximal degree in co-relation 32604. Up to 3093 conditions per place. [2024-06-28 00:30:31,750 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 215 selfloop transitions, 149 changer transitions 0/421 dead transitions. [2024-06-28 00:30:31,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 421 transitions, 7402 flow [2024-06-28 00:30:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 00:30:31,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:30:31,751 INFO L175 Difference]: Start difference. First operand has 204 places, 403 transitions, 6608 flow. Second operand 8 states and 136 transitions. [2024-06-28 00:30:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 421 transitions, 7402 flow [2024-06-28 00:30:31,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 421 transitions, 7275 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 00:30:31,966 INFO L231 Difference]: Finished difference. Result has 209 places, 403 transitions, 6801 flow [2024-06-28 00:30:31,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6801, PETRI_PLACES=209, PETRI_TRANSITIONS=403} [2024-06-28 00:30:31,967 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 00:30:31,967 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 403 transitions, 6801 flow [2024-06-28 00:30:31,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:31,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:31,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:31,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:30:31,968 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:31,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 988308305, now seen corresponding path program 7 times [2024-06-28 00:30:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659870232] [2024-06-28 00:30:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:33,151 INFO 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 00:30:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659870232] [2024-06-28 00:30:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659870232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:33,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931653275] [2024-06-28 00:30:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:33,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:33,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:33,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 403 transitions, 6801 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:33,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:33,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:33,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:34,409 INFO L124 PetriNetUnfolderBase]: 2509/3715 cut-off events. [2024-06-28 00:30:34,409 INFO L125 PetriNetUnfolderBase]: For 164737/164739 co-relation queries the response was YES. [2024-06-28 00:30:34,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33148 conditions, 3715 events. 2509/3715 cut-off events. For 164737/164739 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17605 event pairs, 525 based on Foata normal form. 6/3717 useless extension candidates. Maximal degree in co-relation 33049. Up to 3237 conditions per place. [2024-06-28 00:30:34,455 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 325 selfloop transitions, 109 changer transitions 0/437 dead transitions. [2024-06-28 00:30:34,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 437 transitions, 8095 flow [2024-06-28 00:30:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:30:34,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 00:30:34,457 INFO L175 Difference]: Start difference. First operand has 209 places, 403 transitions, 6801 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:30:34,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 437 transitions, 8095 flow [2024-06-28 00:30:34,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 437 transitions, 7673 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:34,758 INFO L231 Difference]: Finished difference. Result has 212 places, 410 transitions, 6803 flow [2024-06-28 00:30:34,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6419, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6803, PETRI_PLACES=212, PETRI_TRANSITIONS=410} [2024-06-28 00:30:34,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 00:30:34,759 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 410 transitions, 6803 flow [2024-06-28 00:30:34,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:34,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:34,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:34,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:30:34,760 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:34,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:34,760 INFO L85 PathProgramCache]: Analyzing trace with hash 988308522, now seen corresponding path program 2 times [2024-06-28 00:30:34,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:34,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717645433] [2024-06-28 00:30:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717645433] [2024-06-28 00:30:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717645433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014966847] [2024-06-28 00:30:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:36,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:36,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:36,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:36,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 410 transitions, 6803 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:36,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:36,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:36,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:37,362 INFO L124 PetriNetUnfolderBase]: 2537/3756 cut-off events. [2024-06-28 00:30:37,362 INFO L125 PetriNetUnfolderBase]: For 171189/171191 co-relation queries the response was YES. [2024-06-28 00:30:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33602 conditions, 3756 events. 2537/3756 cut-off events. For 171189/171191 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17809 event pairs, 525 based on Foata normal form. 8/3760 useless extension candidates. Maximal degree in co-relation 33501. Up to 3377 conditions per place. [2024-06-28 00:30:37,408 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 325 selfloop transitions, 119 changer transitions 0/447 dead transitions. [2024-06-28 00:30:37,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 447 transitions, 8142 flow [2024-06-28 00:30:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:30:37,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 00:30:37,414 INFO L175 Difference]: Start difference. First operand has 212 places, 410 transitions, 6803 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:30:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 447 transitions, 8142 flow [2024-06-28 00:30:37,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 447 transitions, 7974 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:37,677 INFO L231 Difference]: Finished difference. Result has 218 places, 422 transitions, 7199 flow [2024-06-28 00:30:37,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6661, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7199, PETRI_PLACES=218, PETRI_TRANSITIONS=422} [2024-06-28 00:30:37,678 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 00:30:37,678 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 422 transitions, 7199 flow [2024-06-28 00:30:37,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:37,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:37,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:37,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:30:37,680 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:37,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -627982853, now seen corresponding path program 8 times [2024-06-28 00:30:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440443534] [2024-06-28 00:30:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440443534] [2024-06-28 00:30:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440443534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:39,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422083974] [2024-06-28 00:30:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:39,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:39,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:39,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 422 transitions, 7199 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:39,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:39,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:39,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:40,128 INFO L124 PetriNetUnfolderBase]: 2564/3798 cut-off events. [2024-06-28 00:30:40,129 INFO L125 PetriNetUnfolderBase]: For 181941/181943 co-relation queries the response was YES. [2024-06-28 00:30:40,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34743 conditions, 3798 events. 2564/3798 cut-off events. For 181941/181943 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18068 event pairs, 519 based on Foata normal form. 4/3798 useless extension candidates. Maximal degree in co-relation 34639. Up to 3240 conditions per place. [2024-06-28 00:30:40,186 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 300 selfloop transitions, 158 changer transitions 0/461 dead transitions. [2024-06-28 00:30:40,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 461 transitions, 8836 flow [2024-06-28 00:30:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 00:30:40,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:30:40,188 INFO L175 Difference]: Start difference. First operand has 218 places, 422 transitions, 7199 flow. Second operand 9 states and 150 transitions. [2024-06-28 00:30:40,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 461 transitions, 8836 flow [2024-06-28 00:30:40,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 461 transitions, 8751 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 00:30:40,539 INFO L231 Difference]: Finished difference. Result has 225 places, 433 transitions, 7662 flow [2024-06-28 00:30:40,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7114, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7662, PETRI_PLACES=225, PETRI_TRANSITIONS=433} [2024-06-28 00:30:40,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 00:30:40,540 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 433 transitions, 7662 flow [2024-06-28 00:30:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:40,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:40,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:30:40,541 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:40,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:40,541 INFO L85 PathProgramCache]: Analyzing trace with hash -9230748, now seen corresponding path program 3 times [2024-06-28 00:30:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830395192] [2024-06-28 00:30:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:42,125 INFO 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 00:30:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830395192] [2024-06-28 00:30:42,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830395192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:42,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:42,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:30:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506373490] [2024-06-28 00:30:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:30:42,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:30:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:30:42,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:42,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 433 transitions, 7662 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:42,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:42,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:42,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:43,414 INFO L124 PetriNetUnfolderBase]: 2575/3821 cut-off events. [2024-06-28 00:30:43,415 INFO L125 PetriNetUnfolderBase]: For 194182/194190 co-relation queries the response was YES. [2024-06-28 00:30:43,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35932 conditions, 3821 events. 2575/3821 cut-off events. For 194182/194190 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18403 event pairs, 767 based on Foata normal form. 10/3829 useless extension candidates. Maximal degree in co-relation 35825. Up to 3662 conditions per place. [2024-06-28 00:30:43,474 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 407 selfloop transitions, 48 changer transitions 0/458 dead transitions. [2024-06-28 00:30:43,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 458 transitions, 8702 flow [2024-06-28 00:30:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:30:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 00:30:43,479 INFO L175 Difference]: Start difference. First operand has 225 places, 433 transitions, 7662 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:30:43,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 458 transitions, 8702 flow [2024-06-28 00:30:43,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 458 transitions, 8447 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:43,871 INFO L231 Difference]: Finished difference. Result has 230 places, 436 transitions, 7561 flow [2024-06-28 00:30:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7407, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7561, PETRI_PLACES=230, PETRI_TRANSITIONS=436} [2024-06-28 00:30:43,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 00:30:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 436 transitions, 7561 flow [2024-06-28 00:30:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:43,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:30:43,874 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1590811826, now seen corresponding path program 6 times [2024-06-28 00:30:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211193887] [2024-06-28 00:30:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:45,711 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 00:30:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211193887] [2024-06-28 00:30:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211193887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:45,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:45,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009860797] [2024-06-28 00:30:45,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:45,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:45,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:30:45,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 436 transitions, 7561 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:45,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:45,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:30:45,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:46,864 INFO L124 PetriNetUnfolderBase]: 2485/3707 cut-off events. [2024-06-28 00:30:46,864 INFO L125 PetriNetUnfolderBase]: For 209913/209955 co-relation queries the response was YES. [2024-06-28 00:30:46,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36004 conditions, 3707 events. 2485/3707 cut-off events. For 209913/209955 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17922 event pairs, 485 based on Foata normal form. 3/3623 useless extension candidates. Maximal degree in co-relation 35895. Up to 2972 conditions per place. [2024-06-28 00:30:46,922 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 173 selfloop transitions, 214 changer transitions 0/454 dead transitions. [2024-06-28 00:30:46,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 454 transitions, 8405 flow [2024-06-28 00:30:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 00:30:46,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 00:30:46,924 INFO L175 Difference]: Start difference. First operand has 230 places, 436 transitions, 7561 flow. Second operand 8 states and 134 transitions. [2024-06-28 00:30:46,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 454 transitions, 8405 flow [2024-06-28 00:30:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 454 transitions, 8245 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:30:47,335 INFO L231 Difference]: Finished difference. Result has 231 places, 436 transitions, 7841 flow [2024-06-28 00:30:47,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7401, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7841, PETRI_PLACES=231, PETRI_TRANSITIONS=436} [2024-06-28 00:30:47,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 00:30:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 436 transitions, 7841 flow [2024-06-28 00:30:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:47,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:47,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:47,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:30:47,337 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:47,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1583187314, now seen corresponding path program 4 times [2024-06-28 00:30:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132031530] [2024-06-28 00:30:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:48,989 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 00:30:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:48,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132031530] [2024-06-28 00:30:48,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132031530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:48,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758281865] [2024-06-28 00:30:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:48,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:49,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:49,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 436 transitions, 7841 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:49,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:49,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:49,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:50,105 INFO L124 PetriNetUnfolderBase]: 2610/3865 cut-off events. [2024-06-28 00:30:50,106 INFO L125 PetriNetUnfolderBase]: For 210084/210086 co-relation queries the response was YES. [2024-06-28 00:30:50,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37326 conditions, 3865 events. 2610/3865 cut-off events. For 210084/210086 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18394 event pairs, 519 based on Foata normal form. 4/3865 useless extension candidates. Maximal degree in co-relation 37216. Up to 3107 conditions per place. [2024-06-28 00:30:50,166 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 264 selfloop transitions, 204 changer transitions 0/471 dead transitions. [2024-06-28 00:30:50,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 471 transitions, 9332 flow [2024-06-28 00:30:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:30:50,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:30:50,168 INFO L175 Difference]: Start difference. First operand has 231 places, 436 transitions, 7841 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:30:50,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 471 transitions, 9332 flow [2024-06-28 00:30:50,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 471 transitions, 8908 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:50,582 INFO L231 Difference]: Finished difference. Result has 234 places, 444 transitions, 8016 flow [2024-06-28 00:30:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7417, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8016, PETRI_PLACES=234, PETRI_TRANSITIONS=444} [2024-06-28 00:30:50,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-28 00:30:50,583 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 444 transitions, 8016 flow [2024-06-28 00:30:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:50,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:50,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:50,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:30:50,584 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:50,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1590811671, now seen corresponding path program 9 times [2024-06-28 00:30:50,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:50,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985389498] [2024-06-28 00:30:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:50,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:51,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985389498] [2024-06-28 00:30:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985389498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241100497] [2024-06-28 00:30:51,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:51,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:51,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:51,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 444 transitions, 8016 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:51,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:51,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:53,082 INFO L124 PetriNetUnfolderBase]: 2605/3858 cut-off events. [2024-06-28 00:30:53,083 INFO L125 PetriNetUnfolderBase]: For 217308/217310 co-relation queries the response was YES. [2024-06-28 00:30:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38195 conditions, 3858 events. 2605/3858 cut-off events. For 217308/217310 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18378 event pairs, 520 based on Foata normal form. 4/3858 useless extension candidates. Maximal degree in co-relation 38083. Up to 3302 conditions per place. [2024-06-28 00:30:53,141 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 307 selfloop transitions, 160 changer transitions 0/470 dead transitions. [2024-06-28 00:30:53,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 470 transitions, 9356 flow [2024-06-28 00:30:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:30:53,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 00:30:53,143 INFO L175 Difference]: Start difference. First operand has 234 places, 444 transitions, 8016 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:30:53,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 470 transitions, 9356 flow [2024-06-28 00:30:53,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 470 transitions, 9201 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-28 00:30:53,673 INFO L231 Difference]: Finished difference. Result has 241 places, 444 transitions, 8189 flow [2024-06-28 00:30:53,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7861, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8189, PETRI_PLACES=241, PETRI_TRANSITIONS=444} [2024-06-28 00:30:53,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 00:30:53,674 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 444 transitions, 8189 flow [2024-06-28 00:30:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:53,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:53,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:30:53,675 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:53,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -627780826, now seen corresponding path program 5 times [2024-06-28 00:30:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284022392] [2024-06-28 00:30:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:55,050 INFO 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 00:30:55,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284022392] [2024-06-28 00:30:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284022392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:55,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727425275] [2024-06-28 00:30:55,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:55,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:55,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:55,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 444 transitions, 8189 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:55,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:55,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:55,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:56,435 INFO L124 PetriNetUnfolderBase]: 2628/3893 cut-off events. [2024-06-28 00:30:56,435 INFO L125 PetriNetUnfolderBase]: For 227703/227705 co-relation queries the response was YES. [2024-06-28 00:30:56,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39005 conditions, 3893 events. 2628/3893 cut-off events. For 227703/227705 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18596 event pairs, 520 based on Foata normal form. 8/3897 useless extension candidates. Maximal degree in co-relation 38891. Up to 3306 conditions per place. [2024-06-28 00:30:56,489 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 287 selfloop transitions, 184 changer transitions 0/474 dead transitions. [2024-06-28 00:30:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 474 transitions, 9616 flow [2024-06-28 00:30:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:30:56,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:30:56,491 INFO L175 Difference]: Start difference. First operand has 241 places, 444 transitions, 8189 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:30:56,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 474 transitions, 9616 flow [2024-06-28 00:30:56,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 474 transitions, 9294 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:30:56,927 INFO L231 Difference]: Finished difference. Result has 242 places, 447 transitions, 8294 flow [2024-06-28 00:30:56,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7867, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8294, PETRI_PLACES=242, PETRI_TRANSITIONS=447} [2024-06-28 00:30:56,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 00:30:56,928 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 447 transitions, 8294 flow [2024-06-28 00:30:56,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:56,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:56,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:56,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:30:56,929 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:56,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1583454441, now seen corresponding path program 10 times [2024-06-28 00:30:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766217398] [2024-06-28 00:30:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766217398] [2024-06-28 00:30:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766217398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887608950] [2024-06-28 00:30:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:58,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:58,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:30:58,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 447 transitions, 8294 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:58,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:58,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:30:58,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:59,076 INFO L124 PetriNetUnfolderBase]: 2617/3876 cut-off events. [2024-06-28 00:30:59,076 INFO L125 PetriNetUnfolderBase]: For 232173/232175 co-relation queries the response was YES. [2024-06-28 00:30:59,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39136 conditions, 3876 events. 2617/3876 cut-off events. For 232173/232175 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18488 event pairs, 520 based on Foata normal form. 4/3876 useless extension candidates. Maximal degree in co-relation 39021. Up to 3322 conditions per place. [2024-06-28 00:30:59,124 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 287 selfloop transitions, 181 changer transitions 0/471 dead transitions. [2024-06-28 00:30:59,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 471 transitions, 9484 flow [2024-06-28 00:30:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:30:59,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:30:59,126 INFO L175 Difference]: Start difference. First operand has 242 places, 447 transitions, 8294 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:30:59,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 471 transitions, 9484 flow [2024-06-28 00:30:59,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 471 transitions, 8957 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:59,500 INFO L231 Difference]: Finished difference. Result has 245 places, 447 transitions, 8137 flow [2024-06-28 00:30:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7767, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8137, PETRI_PLACES=245, PETRI_TRANSITIONS=447} [2024-06-28 00:30:59,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 00:30:59,506 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 447 transitions, 8137 flow [2024-06-28 00:30:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:59,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:59,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:30:59,508 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1184153042, now seen corresponding path program 1 times [2024-06-28 00:30:59,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:59,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41735389] [2024-06-28 00:30:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:00,386 INFO 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 00:31:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41735389] [2024-06-28 00:31:00,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41735389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:00,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:00,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081936980] [2024-06-28 00:31:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:00,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:00,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:00,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 447 transitions, 8137 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:00,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:00,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:00,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:01,699 INFO L124 PetriNetUnfolderBase]: 2595/3877 cut-off events. [2024-06-28 00:31:01,699 INFO L125 PetriNetUnfolderBase]: For 267472/267602 co-relation queries the response was YES. [2024-06-28 00:31:01,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39519 conditions, 3877 events. 2595/3877 cut-off events. For 267472/267602 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19164 event pairs, 665 based on Foata normal form. 11/3777 useless extension candidates. Maximal degree in co-relation 39403. Up to 3378 conditions per place. [2024-06-28 00:31:01,767 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 311 selfloop transitions, 103 changer transitions 0/485 dead transitions. [2024-06-28 00:31:01,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 485 transitions, 9140 flow [2024-06-28 00:31:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:31:01,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 00:31:01,769 INFO L175 Difference]: Start difference. First operand has 245 places, 447 transitions, 8137 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:31:01,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 485 transitions, 9140 flow [2024-06-28 00:31:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 485 transitions, 8776 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:02,358 INFO L231 Difference]: Finished difference. Result has 248 places, 452 transitions, 8107 flow [2024-06-28 00:31:02,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8107, PETRI_PLACES=248, PETRI_TRANSITIONS=452} [2024-06-28 00:31:02,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 00:31:02,360 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 452 transitions, 8107 flow [2024-06-28 00:31:02,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:02,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:02,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:02,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:31:02,361 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:02,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 800202284, now seen corresponding path program 2 times [2024-06-28 00:31:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:02,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459991960] [2024-06-28 00:31:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:03,190 INFO 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 00:31:03,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459991960] [2024-06-28 00:31:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459991960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:03,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:03,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:31:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989075500] [2024-06-28 00:31:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:31:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:31:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:31:03,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:31:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 452 transitions, 8107 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:31:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:31:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:04,309 INFO L124 PetriNetUnfolderBase]: 2198/3508 cut-off events. [2024-06-28 00:31:04,309 INFO L125 PetriNetUnfolderBase]: For 269257/269409 co-relation queries the response was YES. [2024-06-28 00:31:04,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35804 conditions, 3508 events. 2198/3508 cut-off events. For 269257/269409 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19119 event pairs, 276 based on Foata normal form. 93/3527 useless extension candidates. Maximal degree in co-relation 35685. Up to 2198 conditions per place. [2024-06-28 00:31:04,376 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 162 selfloop transitions, 147 changer transitions 0/482 dead transitions. [2024-06-28 00:31:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 482 transitions, 8922 flow [2024-06-28 00:31:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:31:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:31:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 00:31:04,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107142857142857 [2024-06-28 00:31:04,378 INFO L175 Difference]: Start difference. First operand has 248 places, 452 transitions, 8107 flow. Second operand 7 states and 143 transitions. [2024-06-28 00:31:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 482 transitions, 8922 flow [2024-06-28 00:31:04,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 482 transitions, 8657 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:04,899 INFO L231 Difference]: Finished difference. Result has 250 places, 461 transitions, 8404 flow [2024-06-28 00:31:04,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7881, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8404, PETRI_PLACES=250, PETRI_TRANSITIONS=461} [2024-06-28 00:31:04,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 00:31:04,900 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 461 transitions, 8404 flow [2024-06-28 00:31:04,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:31:04,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:04,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:04,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:31:04,901 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:04,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash -530121830, now seen corresponding path program 1 times [2024-06-28 00:31:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:04,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98270858] [2024-06-28 00:31:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:04,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98270858] [2024-06-28 00:31:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98270858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:05,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:31:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650328505] [2024-06-28 00:31:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:31:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:31:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:31:06,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:06,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 461 transitions, 8404 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 00:31:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:07,332 INFO L124 PetriNetUnfolderBase]: 2702/4059 cut-off events. [2024-06-28 00:31:07,332 INFO L125 PetriNetUnfolderBase]: For 266859/266897 co-relation queries the response was YES. [2024-06-28 00:31:07,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40680 conditions, 4059 events. 2702/4059 cut-off events. For 266859/266897 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 20306 event pairs, 479 based on Foata normal form. 44/4099 useless extension candidates. Maximal degree in co-relation 40560. Up to 3528 conditions per place. [2024-06-28 00:31:07,391 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 340 selfloop transitions, 140 changer transitions 0/510 dead transitions. [2024-06-28 00:31:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 510 transitions, 9947 flow [2024-06-28 00:31:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 00:31:07,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 00:31:07,393 INFO L175 Difference]: Start difference. First operand has 250 places, 461 transitions, 8404 flow. Second operand 8 states and 138 transitions. [2024-06-28 00:31:07,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 510 transitions, 9947 flow [2024-06-28 00:31:07,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 510 transitions, 9808 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:07,928 INFO L231 Difference]: Finished difference. Result has 255 places, 486 transitions, 9196 flow [2024-06-28 00:31:07,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8277, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9196, PETRI_PLACES=255, PETRI_TRANSITIONS=486} [2024-06-28 00:31:07,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 00:31:07,931 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 486 transitions, 9196 flow [2024-06-28 00:31:07,931 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 00:31:07,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:07,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:07,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:31:07,931 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:07,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1341291130, now seen corresponding path program 2 times [2024-06-28 00:31:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135181363] [2024-06-28 00:31:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:09,162 INFO 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 00:31:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135181363] [2024-06-28 00:31:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135181363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:09,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79800045] [2024-06-28 00:31:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:09,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:09,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:09,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 486 transitions, 9196 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:09,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:09,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:09,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:10,600 INFO L124 PetriNetUnfolderBase]: 2842/4238 cut-off events. [2024-06-28 00:31:10,600 INFO L125 PetriNetUnfolderBase]: For 282763/282767 co-relation queries the response was YES. [2024-06-28 00:31:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43228 conditions, 4238 events. 2842/4238 cut-off events. For 282763/282767 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21204 event pairs, 691 based on Foata normal form. 7/4244 useless extension candidates. Maximal degree in co-relation 43107. Up to 3903 conditions per place. [2024-06-28 00:31:10,675 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 413 selfloop transitions, 117 changer transitions 0/533 dead transitions. [2024-06-28 00:31:10,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 533 transitions, 10738 flow [2024-06-28 00:31:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:31:10,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 00:31:10,677 INFO L175 Difference]: Start difference. First operand has 255 places, 486 transitions, 9196 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:31:10,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 533 transitions, 10738 flow [2024-06-28 00:31:11,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 533 transitions, 10611 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:11,364 INFO L231 Difference]: Finished difference. Result has 261 places, 503 transitions, 9787 flow [2024-06-28 00:31:11,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9109, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9787, PETRI_PLACES=261, PETRI_TRANSITIONS=503} [2024-06-28 00:31:11,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 00:31:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 503 transitions, 9787 flow [2024-06-28 00:31:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:11,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:11,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:31:11,366 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:11,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1222194326, now seen corresponding path program 3 times [2024-06-28 00:31:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970225008] [2024-06-28 00:31:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:12,697 INFO 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 00:31:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970225008] [2024-06-28 00:31:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970225008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878632693] [2024-06-28 00:31:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:12,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:12,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:12,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 503 transitions, 9787 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:12,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:12,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:12,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:14,231 INFO L124 PetriNetUnfolderBase]: 2754/4144 cut-off events. [2024-06-28 00:31:14,231 INFO L125 PetriNetUnfolderBase]: For 299559/299642 co-relation queries the response was YES. [2024-06-28 00:31:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43478 conditions, 4144 events. 2754/4144 cut-off events. For 299559/299642 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20997 event pairs, 488 based on Foata normal form. 15/4070 useless extension candidates. Maximal degree in co-relation 43356. Up to 3552 conditions per place. [2024-06-28 00:31:14,304 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 297 selfloop transitions, 154 changer transitions 0/542 dead transitions. [2024-06-28 00:31:14,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 542 transitions, 10897 flow [2024-06-28 00:31:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 00:31:14,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:31:14,306 INFO L175 Difference]: Start difference. First operand has 261 places, 503 transitions, 9787 flow. Second operand 10 states and 170 transitions. [2024-06-28 00:31:14,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 542 transitions, 10897 flow [2024-06-28 00:31:15,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 542 transitions, 10705 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:15,045 INFO L231 Difference]: Finished difference. Result has 267 places, 507 transitions, 10016 flow [2024-06-28 00:31:15,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9595, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10016, PETRI_PLACES=267, PETRI_TRANSITIONS=507} [2024-06-28 00:31:15,046 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 00:31:15,046 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 507 transitions, 10016 flow [2024-06-28 00:31:15,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:15,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:15,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:15,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:31:15,047 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:15,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash 961167292, now seen corresponding path program 4 times [2024-06-28 00:31:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238955576] [2024-06-28 00:31:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:16,291 INFO 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 00:31:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238955576] [2024-06-28 00:31:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238955576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617744422] [2024-06-28 00:31:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:16,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:16,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 507 transitions, 10016 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:16,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:16,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:16,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:17,827 INFO L124 PetriNetUnfolderBase]: 2849/4292 cut-off events. [2024-06-28 00:31:17,828 INFO L125 PetriNetUnfolderBase]: For 317422/317602 co-relation queries the response was YES. [2024-06-28 00:31:17,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44652 conditions, 4292 events. 2849/4292 cut-off events. For 317422/317602 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 22055 event pairs, 442 based on Foata normal form. 72/4261 useless extension candidates. Maximal degree in co-relation 44529. Up to 3716 conditions per place. [2024-06-28 00:31:17,901 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 351 selfloop transitions, 112 changer transitions 0/554 dead transitions. [2024-06-28 00:31:17,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 554 transitions, 11237 flow [2024-06-28 00:31:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:31:17,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:31:17,904 INFO L175 Difference]: Start difference. First operand has 267 places, 507 transitions, 10016 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:31:17,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 554 transitions, 11237 flow [2024-06-28 00:31:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 554 transitions, 10896 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:18,618 INFO L231 Difference]: Finished difference. Result has 270 places, 523 transitions, 10147 flow [2024-06-28 00:31:18,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9675, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10147, PETRI_PLACES=270, PETRI_TRANSITIONS=523} [2024-06-28 00:31:18,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 00:31:18,619 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 523 transitions, 10147 flow [2024-06-28 00:31:18,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:18,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:18,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:18,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:31:18,620 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:18,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -726729020, now seen corresponding path program 3 times [2024-06-28 00:31:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394729910] [2024-06-28 00:31:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:19,894 INFO 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 00:31:19,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394729910] [2024-06-28 00:31:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394729910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:19,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:19,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221737125] [2024-06-28 00:31:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:19,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:19,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:20,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:20,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 523 transitions, 10147 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:20,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:20,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:21,487 INFO L124 PetriNetUnfolderBase]: 3083/4598 cut-off events. [2024-06-28 00:31:21,488 INFO L125 PetriNetUnfolderBase]: For 299463/299469 co-relation queries the response was YES. [2024-06-28 00:31:21,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46417 conditions, 4598 events. 3083/4598 cut-off events. For 299463/299469 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23398 event pairs, 568 based on Foata normal form. 9/4606 useless extension candidates. Maximal degree in co-relation 46292. Up to 4303 conditions per place. [2024-06-28 00:31:21,568 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 454 selfloop transitions, 115 changer transitions 0/572 dead transitions. [2024-06-28 00:31:21,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 572 transitions, 11755 flow [2024-06-28 00:31:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:31:21,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 00:31:21,570 INFO L175 Difference]: Start difference. First operand has 270 places, 523 transitions, 10147 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:31:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 572 transitions, 11755 flow [2024-06-28 00:31:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 572 transitions, 11475 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:22,504 INFO L231 Difference]: Finished difference. Result has 274 places, 544 transitions, 10579 flow [2024-06-28 00:31:22,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9867, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10579, PETRI_PLACES=274, PETRI_TRANSITIONS=544} [2024-06-28 00:31:22,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 00:31:22,505 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 544 transitions, 10579 flow [2024-06-28 00:31:22,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:22,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:22,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:31:22,506 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:22,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1741147904, now seen corresponding path program 5 times [2024-06-28 00:31:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519983998] [2024-06-28 00:31:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519983998] [2024-06-28 00:31:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519983998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:23,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290094497] [2024-06-28 00:31:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:23,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:23,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:23,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 544 transitions, 10579 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:23,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:23,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:23,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:25,454 INFO L124 PetriNetUnfolderBase]: 2942/4450 cut-off events. [2024-06-28 00:31:25,455 INFO L125 PetriNetUnfolderBase]: For 345256/345577 co-relation queries the response was YES. [2024-06-28 00:31:25,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46255 conditions, 4450 events. 2942/4450 cut-off events. For 345256/345577 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23158 event pairs, 476 based on Foata normal form. 70/4420 useless extension candidates. Maximal degree in co-relation 46128. Up to 3821 conditions per place. [2024-06-28 00:31:25,535 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 333 selfloop transitions, 145 changer transitions 0/581 dead transitions. [2024-06-28 00:31:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 581 transitions, 11761 flow [2024-06-28 00:31:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:31:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:31:25,537 INFO L175 Difference]: Start difference. First operand has 274 places, 544 transitions, 10579 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:31:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 581 transitions, 11761 flow [2024-06-28 00:31:26,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 581 transitions, 11629 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:31:26,427 INFO L231 Difference]: Finished difference. Result has 280 places, 552 transitions, 10902 flow [2024-06-28 00:31:26,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10447, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10902, PETRI_PLACES=280, PETRI_TRANSITIONS=552} [2024-06-28 00:31:26,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 00:31:26,428 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 552 transitions, 10902 flow [2024-06-28 00:31:26,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:26,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:26,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:31:26,429 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:26,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash -684364116, now seen corresponding path program 1 times [2024-06-28 00:31:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168635873] [2024-06-28 00:31:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:28,145 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 00:31:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:28,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168635873] [2024-06-28 00:31:28,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168635873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:28,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:28,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750223327] [2024-06-28 00:31:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:28,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:28,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:28,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 552 transitions, 10902 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:31:28,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:28,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:28,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:29,973 INFO L124 PetriNetUnfolderBase]: 3207/4784 cut-off events. [2024-06-28 00:31:29,973 INFO L125 PetriNetUnfolderBase]: For 329670/329676 co-relation queries the response was YES. [2024-06-28 00:31:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48534 conditions, 4784 events. 3207/4784 cut-off events. For 329670/329676 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24498 event pairs, 577 based on Foata normal form. 11/4794 useless extension candidates. Maximal degree in co-relation 48406. Up to 4251 conditions per place. [2024-06-28 00:31:30,059 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 410 selfloop transitions, 182 changer transitions 0/595 dead transitions. [2024-06-28 00:31:30,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 595 transitions, 12397 flow [2024-06-28 00:31:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 00:31:30,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-06-28 00:31:30,061 INFO L175 Difference]: Start difference. First operand has 280 places, 552 transitions, 10902 flow. Second operand 10 states and 166 transitions. [2024-06-28 00:31:30,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 595 transitions, 12397 flow [2024-06-28 00:31:30,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 595 transitions, 12099 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:30,997 INFO L231 Difference]: Finished difference. Result has 284 places, 560 transitions, 11120 flow [2024-06-28 00:31:30,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10604, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11120, PETRI_PLACES=284, PETRI_TRANSITIONS=560} [2024-06-28 00:31:30,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 00:31:30,998 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 560 transitions, 11120 flow [2024-06-28 00:31:30,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:31:30,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:30,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:30,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:31:30,999 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:30,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1029222670, now seen corresponding path program 1 times [2024-06-28 00:31:31,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:31,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054343951] [2024-06-28 00:31:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:31,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:32,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054343951] [2024-06-28 00:31:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054343951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103118466] [2024-06-28 00:31:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:32,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:32,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 560 transitions, 11120 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:32,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:32,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:32,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:34,379 INFO L124 PetriNetUnfolderBase]: 3317/4962 cut-off events. [2024-06-28 00:31:34,379 INFO L125 PetriNetUnfolderBase]: For 366662/366668 co-relation queries the response was YES. [2024-06-28 00:31:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50292 conditions, 4962 events. 3317/4962 cut-off events. For 366662/366668 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 25718 event pairs, 577 based on Foata normal form. 30/4991 useless extension candidates. Maximal degree in co-relation 50163. Up to 4325 conditions per place. [2024-06-28 00:31:34,471 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 425 selfloop transitions, 178 changer transitions 0/606 dead transitions. [2024-06-28 00:31:34,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 606 transitions, 12675 flow [2024-06-28 00:31:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 00:31:34,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 00:31:34,473 INFO L175 Difference]: Start difference. First operand has 284 places, 560 transitions, 11120 flow. Second operand 10 states and 169 transitions. [2024-06-28 00:31:34,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 606 transitions, 12675 flow [2024-06-28 00:31:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 606 transitions, 12308 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:35,459 INFO L231 Difference]: Finished difference. Result has 288 places, 570 transitions, 11355 flow [2024-06-28 00:31:35,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10765, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11355, PETRI_PLACES=288, PETRI_TRANSITIONS=570} [2024-06-28 00:31:35,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 00:31:35,460 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 570 transitions, 11355 flow [2024-06-28 00:31:35,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:35,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:35,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:35,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:31:35,461 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:35,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1723403654, now seen corresponding path program 6 times [2024-06-28 00:31:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99576130] [2024-06-28 00:31:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:36,728 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 00:31:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99576130] [2024-06-28 00:31:36,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99576130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:36,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:36,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:36,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23577851] [2024-06-28 00:31:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:36,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:36,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:36,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:36,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 570 transitions, 11355 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:36,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:36,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:36,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:38,479 INFO L124 PetriNetUnfolderBase]: 3172/4818 cut-off events. [2024-06-28 00:31:38,479 INFO L125 PetriNetUnfolderBase]: For 382850/383306 co-relation queries the response was YES. [2024-06-28 00:31:38,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50247 conditions, 4818 events. 3172/4818 cut-off events. For 382850/383306 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 25795 event pairs, 494 based on Foata normal form. 135/4822 useless extension candidates. Maximal degree in co-relation 50116. Up to 4173 conditions per place. [2024-06-28 00:31:38,583 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 391 selfloop transitions, 113 changer transitions 0/613 dead transitions. [2024-06-28 00:31:38,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 613 transitions, 12694 flow [2024-06-28 00:31:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:31:38,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 00:31:38,585 INFO L175 Difference]: Start difference. First operand has 288 places, 570 transitions, 11355 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:31:38,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 613 transitions, 12694 flow [2024-06-28 00:31:39,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 613 transitions, 12400 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:39,548 INFO L231 Difference]: Finished difference. Result has 291 places, 588 transitions, 11602 flow [2024-06-28 00:31:39,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11061, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11602, PETRI_PLACES=291, PETRI_TRANSITIONS=588} [2024-06-28 00:31:39,549 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 00:31:39,549 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 588 transitions, 11602 flow [2024-06-28 00:31:39,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:39,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:39,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:39,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:31:39,550 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:39,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1723464228, now seen corresponding path program 4 times [2024-06-28 00:31:39,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:39,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318931669] [2024-06-28 00:31:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:39,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:40,904 INFO 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 00:31:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318931669] [2024-06-28 00:31:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318931669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:40,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146877795] [2024-06-28 00:31:40,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:40,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:40,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:40,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 588 transitions, 11602 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:40,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:40,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:40,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:42,678 INFO L124 PetriNetUnfolderBase]: 3497/5245 cut-off events. [2024-06-28 00:31:42,678 INFO L125 PetriNetUnfolderBase]: For 370715/370721 co-relation queries the response was YES. [2024-06-28 00:31:42,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53159 conditions, 5245 events. 3497/5245 cut-off events. For 370715/370721 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27865 event pairs, 659 based on Foata normal form. 10/5251 useless extension candidates. Maximal degree in co-relation 53026. Up to 4944 conditions per place. [2024-06-28 00:31:42,780 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 500 selfloop transitions, 113 changer transitions 0/616 dead transitions. [2024-06-28 00:31:42,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 616 transitions, 13035 flow [2024-06-28 00:31:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:31:42,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 00:31:42,782 INFO L175 Difference]: Start difference. First operand has 291 places, 588 transitions, 11602 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:31:42,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 616 transitions, 13035 flow [2024-06-28 00:31:43,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 616 transitions, 12783 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:43,836 INFO L231 Difference]: Finished difference. Result has 296 places, 594 transitions, 11792 flow [2024-06-28 00:31:43,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11350, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11792, PETRI_PLACES=296, PETRI_TRANSITIONS=594} [2024-06-28 00:31:43,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 00:31:43,837 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 594 transitions, 11792 flow [2024-06-28 00:31:43,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:43,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:43,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:43,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:31:43,838 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash -613312244, now seen corresponding path program 7 times [2024-06-28 00:31:43,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592587877] [2024-06-28 00:31:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:43,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592587877] [2024-06-28 00:31:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592587877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725024266] [2024-06-28 00:31:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:45,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:45,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:45,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:45,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 594 transitions, 11792 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:45,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:45,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:45,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:47,133 INFO L124 PetriNetUnfolderBase]: 3250/4961 cut-off events. [2024-06-28 00:31:47,133 INFO L125 PetriNetUnfolderBase]: For 407827/408380 co-relation queries the response was YES. [2024-06-28 00:31:47,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51850 conditions, 4961 events. 3250/4961 cut-off events. For 407827/408380 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 26965 event pairs, 519 based on Foata normal form. 120/4947 useless extension candidates. Maximal degree in co-relation 51715. Up to 4275 conditions per place. [2024-06-28 00:31:47,228 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 372 selfloop transitions, 146 changer transitions 0/629 dead transitions. [2024-06-28 00:31:47,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 629 transitions, 13088 flow [2024-06-28 00:31:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:31:47,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 00:31:47,230 INFO L175 Difference]: Start difference. First operand has 296 places, 594 transitions, 11792 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:31:47,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 629 transitions, 13088 flow [2024-06-28 00:31:48,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 629 transitions, 12883 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:48,177 INFO L231 Difference]: Finished difference. Result has 300 places, 606 transitions, 12112 flow [2024-06-28 00:31:48,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11587, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12112, PETRI_PLACES=300, PETRI_TRANSITIONS=606} [2024-06-28 00:31:48,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 00:31:48,178 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 606 transitions, 12112 flow [2024-06-28 00:31:48,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:48,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:48,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:31:48,179 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:48,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -495224440, now seen corresponding path program 5 times [2024-06-28 00:31:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115792213] [2024-06-28 00:31:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:49,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115792213] [2024-06-28 00:31:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115792213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:49,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:49,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037807488] [2024-06-28 00:31:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:49,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:49,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:49,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 606 transitions, 12112 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:49,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:51,600 INFO L124 PetriNetUnfolderBase]: 3635/5449 cut-off events. [2024-06-28 00:31:51,601 INFO L125 PetriNetUnfolderBase]: For 398129/398135 co-relation queries the response was YES. [2024-06-28 00:31:51,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55604 conditions, 5449 events. 3635/5449 cut-off events. For 398129/398135 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 29156 event pairs, 653 based on Foata normal form. 8/5453 useless extension candidates. Maximal degree in co-relation 55468. Up to 5032 conditions per place. [2024-06-28 00:31:51,708 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 496 selfloop transitions, 141 changer transitions 0/640 dead transitions. [2024-06-28 00:31:51,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 640 transitions, 13936 flow [2024-06-28 00:31:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:31:51,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 00:31:51,710 INFO L175 Difference]: Start difference. First operand has 300 places, 606 transitions, 12112 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:31:51,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 640 transitions, 13936 flow [2024-06-28 00:31:52,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 640 transitions, 13585 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:52,965 INFO L231 Difference]: Finished difference. Result has 301 places, 616 transitions, 12321 flow [2024-06-28 00:31:52,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11761, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12321, PETRI_PLACES=301, PETRI_TRANSITIONS=616} [2024-06-28 00:31:52,966 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 00:31:52,967 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 616 transitions, 12321 flow [2024-06-28 00:31:52,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:52,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:52,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:52,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:31:52,967 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:52,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash -495224564, now seen corresponding path program 8 times [2024-06-28 00:31:52,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:52,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45636398] [2024-06-28 00:31:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:52,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:54,522 INFO 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 00:31:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45636398] [2024-06-28 00:31:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45636398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:54,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:54,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603396551] [2024-06-28 00:31:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:54,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:31:54,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 616 transitions, 12321 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:54,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:54,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:31:54,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:56,386 INFO L124 PetriNetUnfolderBase]: 3287/5009 cut-off events. [2024-06-28 00:31:56,386 INFO L125 PetriNetUnfolderBase]: For 437340/437900 co-relation queries the response was YES. [2024-06-28 00:31:56,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53312 conditions, 5009 events. 3287/5009 cut-off events. For 437340/437900 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 27212 event pairs, 500 based on Foata normal form. 120/4988 useless extension candidates. Maximal degree in co-relation 53175. Up to 4319 conditions per place. [2024-06-28 00:31:56,485 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 369 selfloop transitions, 160 changer transitions 0/643 dead transitions. [2024-06-28 00:31:56,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 643 transitions, 13587 flow [2024-06-28 00:31:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:31:56,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 00:31:56,487 INFO L175 Difference]: Start difference. First operand has 301 places, 616 transitions, 12321 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:31:56,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 643 transitions, 13587 flow [2024-06-28 00:31:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 643 transitions, 13325 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:57,675 INFO L231 Difference]: Finished difference. Result has 305 places, 620 transitions, 12523 flow [2024-06-28 00:31:57,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12059, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12523, PETRI_PLACES=305, PETRI_TRANSITIONS=620} [2024-06-28 00:31:57,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 00:31:57,676 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 620 transitions, 12523 flow [2024-06-28 00:31:57,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:57,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:57,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:57,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:31:57,677 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:31:57,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -495046810, now seen corresponding path program 6 times [2024-06-28 00:31:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871483084] [2024-06-28 00:31:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:57,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:59,140 INFO 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 00:31:59,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871483084] [2024-06-28 00:31:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871483084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001130654] [2024-06-28 00:31:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:59,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:59,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:59,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:59,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:31:59,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 620 transitions, 12523 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:59,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:59,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:31:59,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:01,022 INFO L124 PetriNetUnfolderBase]: 3674/5510 cut-off events. [2024-06-28 00:32:01,022 INFO L125 PetriNetUnfolderBase]: For 420195/420201 co-relation queries the response was YES. [2024-06-28 00:32:01,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56787 conditions, 5510 events. 3674/5510 cut-off events. For 420195/420201 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 29558 event pairs, 659 based on Foata normal form. 8/5514 useless extension candidates. Maximal degree in co-relation 56649. Up to 5095 conditions per place. [2024-06-28 00:32:01,128 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 488 selfloop transitions, 151 changer transitions 0/642 dead transitions. [2024-06-28 00:32:01,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 642 transitions, 13883 flow [2024-06-28 00:32:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:32:01,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:32:01,130 INFO L175 Difference]: Start difference. First operand has 305 places, 620 transitions, 12523 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:32:01,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 642 transitions, 13883 flow [2024-06-28 00:32:02,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 642 transitions, 13425 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 00:32:02,468 INFO L231 Difference]: Finished difference. Result has 308 places, 620 transitions, 12383 flow [2024-06-28 00:32:02,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12065, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12383, PETRI_PLACES=308, PETRI_TRANSITIONS=620} [2024-06-28 00:32:02,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-28 00:32:02,469 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 620 transitions, 12383 flow [2024-06-28 00:32:02,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:02,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:02,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:02,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:32:02,470 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:02,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash -495039866, now seen corresponding path program 2 times [2024-06-28 00:32:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:02,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129819039] [2024-06-28 00:32:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:04,123 INFO 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 00:32:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129819039] [2024-06-28 00:32:04,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129819039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:04,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:04,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811670840] [2024-06-28 00:32:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:04,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:04,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 620 transitions, 12383 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:04,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:04,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:04,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:06,270 INFO L124 PetriNetUnfolderBase]: 3826/5758 cut-off events. [2024-06-28 00:32:06,271 INFO L125 PetriNetUnfolderBase]: For 464829/464835 co-relation queries the response was YES. [2024-06-28 00:32:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58163 conditions, 5758 events. 3826/5758 cut-off events. For 464829/464835 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 31327 event pairs, 675 based on Foata normal form. 30/5784 useless extension candidates. Maximal degree in co-relation 58024. Up to 5143 conditions per place. [2024-06-28 00:32:06,383 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 515 selfloop transitions, 140 changer transitions 0/658 dead transitions. [2024-06-28 00:32:06,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 658 transitions, 13983 flow [2024-06-28 00:32:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 00:32:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 00:32:06,386 INFO L175 Difference]: Start difference. First operand has 308 places, 620 transitions, 12383 flow. Second operand 10 states and 164 transitions. [2024-06-28 00:32:06,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 658 transitions, 13983 flow [2024-06-28 00:32:07,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 658 transitions, 13725 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:32:07,706 INFO L231 Difference]: Finished difference. Result has 312 places, 624 transitions, 12509 flow [2024-06-28 00:32:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12125, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12509, PETRI_PLACES=312, PETRI_TRANSITIONS=624} [2024-06-28 00:32:07,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-28 00:32:07,707 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 624 transitions, 12509 flow [2024-06-28 00:32:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:07,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:07,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:07,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:32:07,708 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -58251434, now seen corresponding path program 2 times [2024-06-28 00:32:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33071763] [2024-06-28 00:32:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33071763] [2024-06-28 00:32:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33071763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238414247] [2024-06-28 00:32:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:09,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:09,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 624 transitions, 12509 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:09,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:09,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:09,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:11,462 INFO L124 PetriNetUnfolderBase]: 3848/5793 cut-off events. [2024-06-28 00:32:11,462 INFO L125 PetriNetUnfolderBase]: For 452132/452140 co-relation queries the response was YES. [2024-06-28 00:32:11,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59150 conditions, 5793 events. 3848/5793 cut-off events. For 452132/452140 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 31671 event pairs, 687 based on Foata normal form. 12/5801 useless extension candidates. Maximal degree in co-relation 59010. Up to 5175 conditions per place. [2024-06-28 00:32:11,563 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 435 selfloop transitions, 217 changer transitions 0/655 dead transitions. [2024-06-28 00:32:11,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 655 transitions, 14039 flow [2024-06-28 00:32:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:32:11,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 00:32:11,565 INFO L175 Difference]: Start difference. First operand has 312 places, 624 transitions, 12509 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:32:11,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 655 transitions, 14039 flow [2024-06-28 00:32:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 655 transitions, 13805 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:12,894 INFO L231 Difference]: Finished difference. Result has 315 places, 627 transitions, 12787 flow [2024-06-28 00:32:12,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12275, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12787, PETRI_PLACES=315, PETRI_TRANSITIONS=627} [2024-06-28 00:32:12,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 00:32:12,895 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 627 transitions, 12787 flow [2024-06-28 00:32:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:12,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:12,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:32:12,896 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:12,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash -58251186, now seen corresponding path program 3 times [2024-06-28 00:32:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267540100] [2024-06-28 00:32:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:14,807 INFO 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 00:32:14,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267540100] [2024-06-28 00:32:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267540100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:14,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242182881] [2024-06-28 00:32:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:14,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:14,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:14,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 627 transitions, 12787 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:14,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:14,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:14,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:16,891 INFO L124 PetriNetUnfolderBase]: 3865/5831 cut-off events. [2024-06-28 00:32:16,891 INFO L125 PetriNetUnfolderBase]: For 468088/468094 co-relation queries the response was YES. [2024-06-28 00:32:16,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60336 conditions, 5831 events. 3865/5831 cut-off events. For 468088/468094 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 32157 event pairs, 1148 based on Foata normal form. 10/5839 useless extension candidates. Maximal degree in co-relation 60195. Up to 5642 conditions per place. [2024-06-28 00:32:17,003 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 602 selfloop transitions, 53 changer transitions 0/658 dead transitions. [2024-06-28 00:32:17,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 658 transitions, 14281 flow [2024-06-28 00:32:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 00:32:17,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3725 [2024-06-28 00:32:17,005 INFO L175 Difference]: Start difference. First operand has 315 places, 627 transitions, 12787 flow. Second operand 10 states and 149 transitions. [2024-06-28 00:32:17,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 658 transitions, 14281 flow [2024-06-28 00:32:18,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 658 transitions, 13793 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:18,258 INFO L231 Difference]: Finished difference. Result has 318 places, 631 transitions, 12504 flow [2024-06-28 00:32:18,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12303, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12504, PETRI_PLACES=318, PETRI_TRANSITIONS=631} [2024-06-28 00:32:18,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 00:32:18,260 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 631 transitions, 12504 flow [2024-06-28 00:32:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:18,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:18,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:32:18,260 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:18,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash -49680306, now seen corresponding path program 4 times [2024-06-28 00:32:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993061325] [2024-06-28 00:32:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993061325] [2024-06-28 00:32:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993061325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661130843] [2024-06-28 00:32:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:19,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:20,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 631 transitions, 12504 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:20,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:20,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:22,073 INFO L124 PetriNetUnfolderBase]: 3976/6000 cut-off events. [2024-06-28 00:32:22,073 INFO L125 PetriNetUnfolderBase]: For 491110/491118 co-relation queries the response was YES. [2024-06-28 00:32:22,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61768 conditions, 6000 events. 3976/6000 cut-off events. For 491110/491118 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 33027 event pairs, 623 based on Foata normal form. 12/6008 useless extension candidates. Maximal degree in co-relation 61625. Up to 4791 conditions per place. [2024-06-28 00:32:22,190 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 423 selfloop transitions, 254 changer transitions 0/680 dead transitions. [2024-06-28 00:32:22,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 680 transitions, 14798 flow [2024-06-28 00:32:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 00:32:22,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:32:22,192 INFO L175 Difference]: Start difference. First operand has 318 places, 631 transitions, 12504 flow. Second operand 9 states and 162 transitions. [2024-06-28 00:32:22,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 680 transitions, 14798 flow [2024-06-28 00:32:23,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 680 transitions, 14645 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 00:32:23,647 INFO L231 Difference]: Finished difference. Result has 323 places, 645 transitions, 13285 flow [2024-06-28 00:32:23,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12351, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13285, PETRI_PLACES=323, PETRI_TRANSITIONS=645} [2024-06-28 00:32:23,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 00:32:23,648 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 645 transitions, 13285 flow [2024-06-28 00:32:23,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:23,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:23,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:32:23,649 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:23,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash -49977224, now seen corresponding path program 3 times [2024-06-28 00:32:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:23,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480080173] [2024-06-28 00:32:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:25,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:25,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480080173] [2024-06-28 00:32:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480080173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256673705] [2024-06-28 00:32:25,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:25,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:25,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:25,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 645 transitions, 13285 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:25,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:25,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:25,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:27,495 INFO L124 PetriNetUnfolderBase]: 4030/6078 cut-off events. [2024-06-28 00:32:27,495 INFO L125 PetriNetUnfolderBase]: For 519854/519862 co-relation queries the response was YES. [2024-06-28 00:32:27,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64506 conditions, 6078 events. 4030/6078 cut-off events. For 519854/519862 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33660 event pairs, 711 based on Foata normal form. 12/6086 useless extension candidates. Maximal degree in co-relation 64359. Up to 5163 conditions per place. [2024-06-28 00:32:27,621 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 412 selfloop transitions, 269 changer transitions 0/684 dead transitions. [2024-06-28 00:32:27,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 684 transitions, 15267 flow [2024-06-28 00:32:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 00:32:27,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 00:32:27,623 INFO L175 Difference]: Start difference. First operand has 323 places, 645 transitions, 13285 flow. Second operand 10 states and 163 transitions. [2024-06-28 00:32:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 684 transitions, 15267 flow [2024-06-28 00:32:29,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 684 transitions, 14896 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 00:32:29,301 INFO L231 Difference]: Finished difference. Result has 329 places, 654 transitions, 13770 flow [2024-06-28 00:32:29,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12918, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13770, PETRI_PLACES=329, PETRI_TRANSITIONS=654} [2024-06-28 00:32:29,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 00:32:29,302 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 654 transitions, 13770 flow [2024-06-28 00:32:29,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:29,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:29,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:29,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:32:29,303 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash -286337034, now seen corresponding path program 9 times [2024-06-28 00:32:29,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150254406] [2024-06-28 00:32:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:30,875 INFO 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 00:32:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150254406] [2024-06-28 00:32:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150254406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:30,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:30,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490743716] [2024-06-28 00:32:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:30,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:32:30,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 654 transitions, 13770 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:30,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:30,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:32:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:33,020 INFO L124 PetriNetUnfolderBase]: 3600/5528 cut-off events. [2024-06-28 00:32:33,021 INFO L125 PetriNetUnfolderBase]: For 537285/537869 co-relation queries the response was YES. [2024-06-28 00:32:33,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61036 conditions, 5528 events. 3600/5528 cut-off events. For 537285/537869 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 30955 event pairs, 558 based on Foata normal form. 127/5523 useless extension candidates. Maximal degree in co-relation 60887. Up to 4599 conditions per place. [2024-06-28 00:32:33,126 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 327 selfloop transitions, 224 changer transitions 0/679 dead transitions. [2024-06-28 00:32:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 679 transitions, 15032 flow [2024-06-28 00:32:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:32:33,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 00:32:33,128 INFO L175 Difference]: Start difference. First operand has 329 places, 654 transitions, 13770 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:32:33,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 679 transitions, 15032 flow [2024-06-28 00:32:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 679 transitions, 14671 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:32:34,763 INFO L231 Difference]: Finished difference. Result has 332 places, 656 transitions, 13940 flow [2024-06-28 00:32:34,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13409, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13940, PETRI_PLACES=332, PETRI_TRANSITIONS=656} [2024-06-28 00:32:34,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-28 00:32:34,765 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 656 transitions, 13940 flow [2024-06-28 00:32:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:34,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:34,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:32:34,765 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:34,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1834165626, now seen corresponding path program 5 times [2024-06-28 00:32:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586642569] [2024-06-28 00:32:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:34,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:36,462 INFO 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 00:32:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586642569] [2024-06-28 00:32:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586642569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:36,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869225968] [2024-06-28 00:32:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:36,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:36,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:36,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:36,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 656 transitions, 13940 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:36,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:36,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:36,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:38,405 INFO L124 PetriNetUnfolderBase]: 4034/6086 cut-off events. [2024-06-28 00:32:38,405 INFO L125 PetriNetUnfolderBase]: For 537213/537221 co-relation queries the response was YES. [2024-06-28 00:32:38,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65823 conditions, 6086 events. 4034/6086 cut-off events. For 537213/537221 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33685 event pairs, 709 based on Foata normal form. 12/6094 useless extension candidates. Maximal degree in co-relation 65672. Up to 5306 conditions per place. [2024-06-28 00:32:38,502 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 443 selfloop transitions, 241 changer transitions 0/687 dead transitions. [2024-06-28 00:32:38,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 687 transitions, 15722 flow [2024-06-28 00:32:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:32:38,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 00:32:38,504 INFO L175 Difference]: Start difference. First operand has 332 places, 656 transitions, 13940 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:32:38,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 687 transitions, 15722 flow [2024-06-28 00:32:39,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 687 transitions, 15209 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:39,812 INFO L231 Difference]: Finished difference. Result has 334 places, 658 transitions, 13978 flow [2024-06-28 00:32:39,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13427, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13978, PETRI_PLACES=334, PETRI_TRANSITIONS=658} [2024-06-28 00:32:39,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-28 00:32:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 658 transitions, 13978 flow [2024-06-28 00:32:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:39,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:39,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:39,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:32:39,813 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:39,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1842446780, now seen corresponding path program 7 times [2024-06-28 00:32:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557069535] [2024-06-28 00:32:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:41,232 INFO 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 00:32:41,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:41,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557069535] [2024-06-28 00:32:41,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557069535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:41,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:41,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:41,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570954447] [2024-06-28 00:32:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:41,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 658 transitions, 13978 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:41,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:41,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:41,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:42,928 INFO L124 PetriNetUnfolderBase]: 4045/6102 cut-off events. [2024-06-28 00:32:42,929 INFO L125 PetriNetUnfolderBase]: For 544517/544525 co-relation queries the response was YES. [2024-06-28 00:32:42,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66225 conditions, 6102 events. 4045/6102 cut-off events. For 544517/544525 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33788 event pairs, 709 based on Foata normal form. 10/6108 useless extension candidates. Maximal degree in co-relation 66073. Up to 5304 conditions per place. [2024-06-28 00:32:43,025 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 433 selfloop transitions, 255 changer transitions 0/691 dead transitions. [2024-06-28 00:32:43,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 691 transitions, 15932 flow [2024-06-28 00:32:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:32:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:32:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:32:43,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 00:32:43,027 INFO L175 Difference]: Start difference. First operand has 334 places, 658 transitions, 13978 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:32:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 691 transitions, 15932 flow [2024-06-28 00:32:44,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 691 transitions, 15403 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:44,499 INFO L231 Difference]: Finished difference. Result has 336 places, 667 transitions, 14324 flow [2024-06-28 00:32:44,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13449, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14324, PETRI_PLACES=336, PETRI_TRANSITIONS=667} [2024-06-28 00:32:44,500 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-28 00:32:44,500 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 667 transitions, 14324 flow [2024-06-28 00:32:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:44,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:44,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:32:44,501 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:44,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2070525560, now seen corresponding path program 8 times [2024-06-28 00:32:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932855369] [2024-06-28 00:32:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932855369] [2024-06-28 00:32:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932855369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:45,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:45,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:32:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185218877] [2024-06-28 00:32:45,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:32:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:32:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:32:45,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:45,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 667 transitions, 14324 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:45,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:45,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:47,792 INFO L124 PetriNetUnfolderBase]: 4056/6118 cut-off events. [2024-06-28 00:32:47,792 INFO L125 PetriNetUnfolderBase]: For 563286/563294 co-relation queries the response was YES. [2024-06-28 00:32:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67204 conditions, 6118 events. 4056/6118 cut-off events. For 563286/563294 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33885 event pairs, 711 based on Foata normal form. 10/6124 useless extension candidates. Maximal degree in co-relation 67050. Up to 5316 conditions per place. [2024-06-28 00:32:47,877 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 463 selfloop transitions, 228 changer transitions 0/694 dead transitions. [2024-06-28 00:32:47,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 694 transitions, 16150 flow [2024-06-28 00:32:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:32:47,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 00:32:47,888 INFO L175 Difference]: Start difference. First operand has 336 places, 667 transitions, 14324 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:32:47,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 694 transitions, 16150 flow [2024-06-28 00:32:49,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 694 transitions, 15967 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 00:32:49,172 INFO L231 Difference]: Finished difference. Result has 341 places, 670 transitions, 14710 flow [2024-06-28 00:32:49,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14151, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14710, PETRI_PLACES=341, PETRI_TRANSITIONS=670} [2024-06-28 00:32:49,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 00:32:49,182 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 670 transitions, 14710 flow [2024-06-28 00:32:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:49,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:49,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:49,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:32:49,183 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:49,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:49,183 INFO L85 PathProgramCache]: Analyzing trace with hash -286152336, now seen corresponding path program 6 times [2024-06-28 00:32:49,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:49,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699809443] [2024-06-28 00:32:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:50,923 INFO 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 00:32:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699809443] [2024-06-28 00:32:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699809443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:50,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464680737] [2024-06-28 00:32:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:50,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:50,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:51,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 670 transitions, 14710 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:53,200 INFO L124 PetriNetUnfolderBase]: 4048/6117 cut-off events. [2024-06-28 00:32:53,201 INFO L125 PetriNetUnfolderBase]: For 558028/558034 co-relation queries the response was YES. [2024-06-28 00:32:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67176 conditions, 6117 events. 4048/6117 cut-off events. For 558028/558034 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 34137 event pairs, 1168 based on Foata normal form. 10/6125 useless extension candidates. Maximal degree in co-relation 67021. Up to 5928 conditions per place. [2024-06-28 00:32:53,329 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 645 selfloop transitions, 50 changer transitions 0/698 dead transitions. [2024-06-28 00:32:53,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 698 transitions, 16233 flow [2024-06-28 00:32:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:32:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:32:53,331 INFO L175 Difference]: Start difference. First operand has 341 places, 670 transitions, 14710 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:32:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 698 transitions, 16233 flow [2024-06-28 00:32:54,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 698 transitions, 15571 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:54,927 INFO L231 Difference]: Finished difference. Result has 343 places, 671 transitions, 14186 flow [2024-06-28 00:32:54,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14048, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14186, PETRI_PLACES=343, PETRI_TRANSITIONS=671} [2024-06-28 00:32:54,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-28 00:32:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 671 transitions, 14186 flow [2024-06-28 00:32:54,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:54,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:32:54,929 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:32:54,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2070347744, now seen corresponding path program 4 times [2024-06-28 00:32:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:54,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775371770] [2024-06-28 00:32:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:56,821 INFO 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 00:32:56,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:56,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775371770] [2024-06-28 00:32:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775371770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:56,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369156790] [2024-06-28 00:32:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:56,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:56,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:32:56,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 671 transitions, 14186 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:32:56,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:56,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:32:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:59,076 INFO L124 PetriNetUnfolderBase]: 4038/6092 cut-off events. [2024-06-28 00:32:59,077 INFO L125 PetriNetUnfolderBase]: For 543946/543954 co-relation queries the response was YES. [2024-06-28 00:32:59,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65683 conditions, 6092 events. 4038/6092 cut-off events. For 543946/543954 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33731 event pairs, 705 based on Foata normal form. 12/6100 useless extension candidates. Maximal degree in co-relation 65529. Up to 5487 conditions per place. [2024-06-28 00:32:59,212 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 498 selfloop transitions, 197 changer transitions 0/698 dead transitions. [2024-06-28 00:32:59,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 698 transitions, 15703 flow [2024-06-28 00:32:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:32:59,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:32:59,214 INFO L175 Difference]: Start difference. First operand has 343 places, 671 transitions, 14186 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:32:59,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 698 transitions, 15703 flow [2024-06-28 00:33:01,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 698 transitions, 15512 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 00:33:01,269 INFO L231 Difference]: Finished difference. Result has 345 places, 671 transitions, 14422 flow [2024-06-28 00:33:01,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14013, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14422, PETRI_PLACES=345, PETRI_TRANSITIONS=671} [2024-06-28 00:33:01,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 00:33:01,270 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 671 transitions, 14422 flow [2024-06-28 00:33:01,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:33:01,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:01,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:33:01,270 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:01,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2070341234, now seen corresponding path program 5 times [2024-06-28 00:33:01,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:01,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266480591] [2024-06-28 00:33:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:02,937 INFO 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 00:33:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266480591] [2024-06-28 00:33:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266480591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:02,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:02,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390632882] [2024-06-28 00:33:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:02,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:03,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:03,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 671 transitions, 14422 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:33:03,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:03,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:05,338 INFO L124 PetriNetUnfolderBase]: 4028/6078 cut-off events. [2024-06-28 00:33:05,338 INFO L125 PetriNetUnfolderBase]: For 550402/550410 co-relation queries the response was YES. [2024-06-28 00:33:05,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65657 conditions, 6078 events. 4028/6078 cut-off events. For 550402/550410 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33671 event pairs, 703 based on Foata normal form. 12/6086 useless extension candidates. Maximal degree in co-relation 65502. Up to 5455 conditions per place. [2024-06-28 00:33:05,452 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 497 selfloop transitions, 199 changer transitions 0/699 dead transitions. [2024-06-28 00:33:05,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 699 transitions, 15953 flow [2024-06-28 00:33:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:33:05,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 00:33:05,454 INFO L175 Difference]: Start difference. First operand has 345 places, 671 transitions, 14422 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:33:05,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 699 transitions, 15953 flow [2024-06-28 00:33:07,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 699 transitions, 15462 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:07,300 INFO L231 Difference]: Finished difference. Result has 346 places, 671 transitions, 14337 flow [2024-06-28 00:33:07,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13931, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14337, PETRI_PLACES=346, PETRI_TRANSITIONS=671} [2024-06-28 00:33:07,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 00:33:07,301 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 671 transitions, 14337 flow [2024-06-28 00:33:07,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:33:07,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:07,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:07,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:33:07,302 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:07,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash -286159280, now seen corresponding path program 9 times [2024-06-28 00:33:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130755189] [2024-06-28 00:33:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130755189] [2024-06-28 00:33:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130755189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:08,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:08,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:33:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350991078] [2024-06-28 00:33:08,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:08,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:33:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:33:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:33:08,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:08,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 671 transitions, 14337 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:08,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:08,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:08,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:10,988 INFO L124 PetriNetUnfolderBase]: 4023/6071 cut-off events. [2024-06-28 00:33:10,989 INFO L125 PetriNetUnfolderBase]: For 555684/555692 co-relation queries the response was YES. [2024-06-28 00:33:11,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65513 conditions, 6071 events. 4023/6071 cut-off events. For 555684/555692 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33589 event pairs, 703 based on Foata normal form. 10/6077 useless extension candidates. Maximal degree in co-relation 65357. Up to 5271 conditions per place. [2024-06-28 00:33:11,117 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 463 selfloop transitions, 227 changer transitions 0/693 dead transitions. [2024-06-28 00:33:11,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 693 transitions, 15803 flow [2024-06-28 00:33:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:33:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:33:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:33:11,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:33:11,119 INFO L175 Difference]: Start difference. First operand has 346 places, 671 transitions, 14337 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:33:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 693 transitions, 15803 flow [2024-06-28 00:33:13,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 693 transitions, 15243 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:13,366 INFO L231 Difference]: Finished difference. Result has 345 places, 671 transitions, 14241 flow [2024-06-28 00:33:13,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13777, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14241, PETRI_PLACES=345, PETRI_TRANSITIONS=671} [2024-06-28 00:33:13,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 00:33:13,367 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 671 transitions, 14241 flow [2024-06-28 00:33:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:13,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:13,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:13,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:33:13,368 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:13,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash 919066382, now seen corresponding path program 1 times [2024-06-28 00:33:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891382755] [2024-06-28 00:33:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:14,616 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 00:33:14,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:14,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891382755] [2024-06-28 00:33:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891382755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:14,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269373052] [2024-06-28 00:33:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:14,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:14,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:14,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 671 transitions, 14241 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:14,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:14,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:14,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:16,762 INFO L124 PetriNetUnfolderBase]: 4040/6105 cut-off events. [2024-06-28 00:33:16,762 INFO L125 PetriNetUnfolderBase]: For 575572/575578 co-relation queries the response was YES. [2024-06-28 00:33:16,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65673 conditions, 6105 events. 4040/6105 cut-off events. For 575572/575578 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 34310 event pairs, 980 based on Foata normal form. 10/6114 useless extension candidates. Maximal degree in co-relation 65517. Up to 5693 conditions per place. [2024-06-28 00:33:16,889 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 644 selfloop transitions, 79 changer transitions 0/726 dead transitions. [2024-06-28 00:33:16,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 726 transitions, 16123 flow [2024-06-28 00:33:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:33:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:33:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:33:16,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 00:33:16,891 INFO L175 Difference]: Start difference. First operand has 345 places, 671 transitions, 14241 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:33:16,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 726 transitions, 16123 flow [2024-06-28 00:33:18,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 726 transitions, 15543 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:33:18,925 INFO L231 Difference]: Finished difference. Result has 349 places, 687 transitions, 14175 flow [2024-06-28 00:33:18,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13661, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14175, PETRI_PLACES=349, PETRI_TRANSITIONS=687} [2024-06-28 00:33:18,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 00:33:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 687 transitions, 14175 flow [2024-06-28 00:33:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:18,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:18,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:33:18,927 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:18,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -963532182, now seen corresponding path program 2 times [2024-06-28 00:33:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144395812] [2024-06-28 00:33:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144395812] [2024-06-28 00:33:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144395812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:19,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:33:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399196224] [2024-06-28 00:33:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:19,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:33:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:33:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:33:20,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 00:33:20,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 687 transitions, 14175 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 00:33:20,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:20,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 00:33:20,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:21,848 INFO L124 PetriNetUnfolderBase]: 3450/5497 cut-off events. [2024-06-28 00:33:21,849 INFO L125 PetriNetUnfolderBase]: For 559580/559652 co-relation queries the response was YES. [2024-06-28 00:33:21,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60277 conditions, 5497 events. 3450/5497 cut-off events. For 559580/559652 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 33031 event pairs, 288 based on Foata normal form. 76/5536 useless extension candidates. Maximal degree in co-relation 60120. Up to 3817 conditions per place. [2024-06-28 00:33:21,977 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 403 selfloop transitions, 176 changer transitions 0/738 dead transitions. [2024-06-28 00:33:21,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 738 transitions, 15962 flow [2024-06-28 00:33:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:33:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:33:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 00:33:21,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 00:33:21,979 INFO L175 Difference]: Start difference. First operand has 349 places, 687 transitions, 14175 flow. Second operand 8 states and 156 transitions. [2024-06-28 00:33:21,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 738 transitions, 15962 flow [2024-06-28 00:33:23,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 738 transitions, 15677 flow, removed 134 selfloop flow, removed 2 redundant places. [2024-06-28 00:33:23,998 INFO L231 Difference]: Finished difference. Result has 358 places, 712 transitions, 15064 flow [2024-06-28 00:33:23,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14024, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15064, PETRI_PLACES=358, PETRI_TRANSITIONS=712} [2024-06-28 00:33:23,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-28 00:33:23,999 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 712 transitions, 15064 flow [2024-06-28 00:33:23,999 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 00:33:24,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:24,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:33:24,000 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:24,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1369648596, now seen corresponding path program 3 times [2024-06-28 00:33:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077706580] [2024-06-28 00:33:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077706580] [2024-06-28 00:33:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077706580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:25,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320772243] [2024-06-28 00:33:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:25,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:25,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 712 transitions, 15064 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:25,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:25,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:25,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:27,888 INFO L124 PetriNetUnfolderBase]: 4108/6238 cut-off events. [2024-06-28 00:33:27,888 INFO L125 PetriNetUnfolderBase]: For 595979/595981 co-relation queries the response was YES. [2024-06-28 00:33:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67546 conditions, 6238 events. 4108/6238 cut-off events. For 595979/595981 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 35292 event pairs, 965 based on Foata normal form. 6/6243 useless extension candidates. Maximal degree in co-relation 67383. Up to 5813 conditions per place. [2024-06-28 00:33:27,998 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 612 selfloop transitions, 136 changer transitions 0/751 dead transitions. [2024-06-28 00:33:27,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 751 transitions, 16846 flow [2024-06-28 00:33:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:33:28,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 00:33:28,000 INFO L175 Difference]: Start difference. First operand has 358 places, 712 transitions, 15064 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:33:28,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 751 transitions, 16846 flow [2024-06-28 00:33:30,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 751 transitions, 16745 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 00:33:30,038 INFO L231 Difference]: Finished difference. Result has 366 places, 716 transitions, 15418 flow [2024-06-28 00:33:30,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14983, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15418, PETRI_PLACES=366, PETRI_TRANSITIONS=716} [2024-06-28 00:33:30,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-28 00:33:30,039 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 716 transitions, 15418 flow [2024-06-28 00:33:30,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:30,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:30,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:33:30,040 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:30,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1566686924, now seen corresponding path program 4 times [2024-06-28 00:33:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984052333] [2024-06-28 00:33:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:30,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:31,302 INFO 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 00:33:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984052333] [2024-06-28 00:33:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984052333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:31,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336226576] [2024-06-28 00:33:31,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:31,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:31,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:31,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:31,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:31,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 716 transitions, 15418 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:31,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:31,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:31,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:33,721 INFO L124 PetriNetUnfolderBase]: 4170/6320 cut-off events. [2024-06-28 00:33:33,721 INFO L125 PetriNetUnfolderBase]: For 610170/610172 co-relation queries the response was YES. [2024-06-28 00:33:33,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68748 conditions, 6320 events. 4170/6320 cut-off events. For 610170/610172 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 35795 event pairs, 911 based on Foata normal form. 6/6325 useless extension candidates. Maximal degree in co-relation 68583. Up to 5702 conditions per place. [2024-06-28 00:33:33,852 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 622 selfloop transitions, 138 changer transitions 0/763 dead transitions. [2024-06-28 00:33:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 763 transitions, 17355 flow [2024-06-28 00:33:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 00:33:33,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 00:33:33,854 INFO L175 Difference]: Start difference. First operand has 366 places, 716 transitions, 15418 flow. Second operand 10 states and 163 transitions. [2024-06-28 00:33:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 763 transitions, 17355 flow [2024-06-28 00:33:35,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 763 transitions, 17015 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 00:33:35,742 INFO L231 Difference]: Finished difference. Result has 369 places, 727 transitions, 15712 flow [2024-06-28 00:33:35,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15078, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15712, PETRI_PLACES=369, PETRI_TRANSITIONS=727} [2024-06-28 00:33:35,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 00:33:35,743 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 727 transitions, 15712 flow [2024-06-28 00:33:35,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:35,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:35,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:33:35,744 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:35,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash -36209217, now seen corresponding path program 1 times [2024-06-28 00:33:35,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:35,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746313592] [2024-06-28 00:33:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:37,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746313592] [2024-06-28 00:33:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746313592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:37,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414195612] [2024-06-28 00:33:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:37,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:37,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:37,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 727 transitions, 15712 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:37,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:37,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:37,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:39,631 INFO L124 PetriNetUnfolderBase]: 4224/6394 cut-off events. [2024-06-28 00:33:39,631 INFO L125 PetriNetUnfolderBase]: For 629470/629478 co-relation queries the response was YES. [2024-06-28 00:33:39,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69775 conditions, 6394 events. 4224/6394 cut-off events. For 629470/629478 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36058 event pairs, 711 based on Foata normal form. 11/6404 useless extension candidates. Maximal degree in co-relation 69608. Up to 6084 conditions per place. [2024-06-28 00:33:39,739 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 661 selfloop transitions, 114 changer transitions 0/778 dead transitions. [2024-06-28 00:33:39,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 778 transitions, 17723 flow [2024-06-28 00:33:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:33:39,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 00:33:39,741 INFO L175 Difference]: Start difference. First operand has 369 places, 727 transitions, 15712 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:33:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 778 transitions, 17723 flow [2024-06-28 00:33:41,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 778 transitions, 17379 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-28 00:33:41,557 INFO L231 Difference]: Finished difference. Result has 373 places, 743 transitions, 15981 flow [2024-06-28 00:33:41,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15368, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15981, PETRI_PLACES=373, PETRI_TRANSITIONS=743} [2024-06-28 00:33:41,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 00:33:41,558 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 743 transitions, 15981 flow [2024-06-28 00:33:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:41,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:41,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:33:41,559 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:41,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -843629384, now seen corresponding path program 5 times [2024-06-28 00:33:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594374218] [2024-06-28 00:33:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:42,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594374218] [2024-06-28 00:33:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594374218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:42,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907558161] [2024-06-28 00:33:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:43,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:43,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 743 transitions, 15981 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:43,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:43,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:43,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:45,540 INFO L124 PetriNetUnfolderBase]: 4274/6460 cut-off events. [2024-06-28 00:33:45,541 INFO L125 PetriNetUnfolderBase]: For 640161/640167 co-relation queries the response was YES. [2024-06-28 00:33:45,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70455 conditions, 6460 events. 4274/6460 cut-off events. For 640161/640167 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 36460 event pairs, 624 based on Foata normal form. 10/6469 useless extension candidates. Maximal degree in co-relation 70286. Up to 6095 conditions per place. [2024-06-28 00:33:45,657 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 706 selfloop transitions, 88 changer transitions 0/797 dead transitions. [2024-06-28 00:33:45,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 797 transitions, 18056 flow [2024-06-28 00:33:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:33:45,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 00:33:45,659 INFO L175 Difference]: Start difference. First operand has 373 places, 743 transitions, 15981 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:33:45,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 797 transitions, 18056 flow [2024-06-28 00:33:47,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 797 transitions, 17816 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 00:33:47,556 INFO L231 Difference]: Finished difference. Result has 380 places, 761 transitions, 16349 flow [2024-06-28 00:33:47,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15741, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16349, PETRI_PLACES=380, PETRI_TRANSITIONS=761} [2024-06-28 00:33:47,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-28 00:33:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 761 transitions, 16349 flow [2024-06-28 00:33:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:47,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:47,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:47,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:33:47,557 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1858985314, now seen corresponding path program 6 times [2024-06-28 00:33:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:47,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944240604] [2024-06-28 00:33:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:47,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944240604] [2024-06-28 00:33:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944240604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:48,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803854604] [2024-06-28 00:33:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:48,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:48,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 761 transitions, 16349 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:48,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:48,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:50,994 INFO L124 PetriNetUnfolderBase]: 4330/6555 cut-off events. [2024-06-28 00:33:50,994 INFO L125 PetriNetUnfolderBase]: For 662167/662173 co-relation queries the response was YES. [2024-06-28 00:33:51,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71871 conditions, 6555 events. 4330/6555 cut-off events. For 662167/662173 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37095 event pairs, 694 based on Foata normal form. 10/6564 useless extension candidates. Maximal degree in co-relation 71699. Up to 6185 conditions per place. [2024-06-28 00:33:51,117 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 675 selfloop transitions, 124 changer transitions 0/802 dead transitions. [2024-06-28 00:33:51,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 802 transitions, 18267 flow [2024-06-28 00:33:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 00:33:51,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 00:33:51,119 INFO L175 Difference]: Start difference. First operand has 380 places, 761 transitions, 16349 flow. Second operand 10 states and 163 transitions. [2024-06-28 00:33:51,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 802 transitions, 18267 flow [2024-06-28 00:33:53,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 802 transitions, 17994 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-28 00:33:53,144 INFO L231 Difference]: Finished difference. Result has 386 places, 769 transitions, 16561 flow [2024-06-28 00:33:53,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16076, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16561, PETRI_PLACES=386, PETRI_TRANSITIONS=769} [2024-06-28 00:33:53,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 00:33:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 769 transitions, 16561 flow [2024-06-28 00:33:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:53,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:53,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:33:53,145 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1858989034, now seen corresponding path program 7 times [2024-06-28 00:33:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:53,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059695758] [2024-06-28 00:33:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:54,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059695758] [2024-06-28 00:33:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059695758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:54,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908121118] [2024-06-28 00:33:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:54,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:33:54,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 769 transitions, 16561 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:54,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:54,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:33:54,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:56,948 INFO L124 PetriNetUnfolderBase]: 4386/6637 cut-off events. [2024-06-28 00:33:56,948 INFO L125 PetriNetUnfolderBase]: For 679176/679182 co-relation queries the response was YES. [2024-06-28 00:33:57,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72883 conditions, 6637 events. 4386/6637 cut-off events. For 679176/679182 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 37614 event pairs, 673 based on Foata normal form. 10/6646 useless extension candidates. Maximal degree in co-relation 72709. Up to 6097 conditions per place. [2024-06-28 00:33:57,110 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 681 selfloop transitions, 133 changer transitions 0/817 dead transitions. [2024-06-28 00:33:57,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 817 transitions, 18625 flow [2024-06-28 00:33:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 00:33:57,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 00:33:57,112 INFO L175 Difference]: Start difference. First operand has 386 places, 769 transitions, 16561 flow. Second operand 10 states and 164 transitions. [2024-06-28 00:33:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 817 transitions, 18625 flow [2024-06-28 00:33:59,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 817 transitions, 18320 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-28 00:33:59,774 INFO L231 Difference]: Finished difference. Result has 391 places, 783 transitions, 16916 flow [2024-06-28 00:33:59,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16256, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16916, PETRI_PLACES=391, PETRI_TRANSITIONS=783} [2024-06-28 00:33:59,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-28 00:33:59,775 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 783 transitions, 16916 flow [2024-06-28 00:33:59,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:59,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:59,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:33:59,776 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:33:59,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1772149199, now seen corresponding path program 2 times [2024-06-28 00:33:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385518253] [2024-06-28 00:33:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385518253] [2024-06-28 00:34:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385518253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:34:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584373274] [2024-06-28 00:34:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:01,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:34:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:34:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:34:01,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:01,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 783 transitions, 16916 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:01,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:01,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:01,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:04,030 INFO L124 PetriNetUnfolderBase]: 4461/6745 cut-off events. [2024-06-28 00:34:04,031 INFO L125 PetriNetUnfolderBase]: For 694477/694487 co-relation queries the response was YES. [2024-06-28 00:34:04,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74144 conditions, 6745 events. 4461/6745 cut-off events. For 694477/694487 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 38332 event pairs, 678 based on Foata normal form. 13/6757 useless extension candidates. Maximal degree in co-relation 73968. Up to 6437 conditions per place. [2024-06-28 00:34:04,154 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 718 selfloop transitions, 119 changer transitions 0/840 dead transitions. [2024-06-28 00:34:04,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 840 transitions, 19195 flow [2024-06-28 00:34:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 00:34:04,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 00:34:04,156 INFO L175 Difference]: Start difference. First operand has 391 places, 783 transitions, 16916 flow. Second operand 10 states and 163 transitions. [2024-06-28 00:34:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 840 transitions, 19195 flow [2024-06-28 00:34:06,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 840 transitions, 18881 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:06,772 INFO L231 Difference]: Finished difference. Result has 396 places, 807 transitions, 17403 flow [2024-06-28 00:34:06,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16602, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17403, PETRI_PLACES=396, PETRI_TRANSITIONS=807} [2024-06-28 00:34:06,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 00:34:06,773 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 807 transitions, 17403 flow [2024-06-28 00:34:06,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:06,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:06,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:34:06,774 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:06,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1807454498, now seen corresponding path program 1 times [2024-06-28 00:34:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:06,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946662129] [2024-06-28 00:34:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:08,423 INFO 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 00:34:08,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946662129] [2024-06-28 00:34:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946662129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:08,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:08,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:08,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434591012] [2024-06-28 00:34:08,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:08,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:08,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:08,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 807 transitions, 17403 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:08,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:08,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:11,193 INFO L124 PetriNetUnfolderBase]: 4668/7085 cut-off events. [2024-06-28 00:34:11,193 INFO L125 PetriNetUnfolderBase]: For 811352/811360 co-relation queries the response was YES. [2024-06-28 00:34:11,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79005 conditions, 7085 events. 4668/7085 cut-off events. For 811352/811360 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 40708 event pairs, 705 based on Foata normal form. 24/7108 useless extension candidates. Maximal degree in co-relation 78827. Up to 5886 conditions per place. [2024-06-28 00:34:11,312 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 638 selfloop transitions, 218 changer transitions 0/859 dead transitions. [2024-06-28 00:34:11,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 859 transitions, 19876 flow [2024-06-28 00:34:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:34:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:34:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 00:34:11,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:34:11,314 INFO L175 Difference]: Start difference. First operand has 396 places, 807 transitions, 17403 flow. Second operand 11 states and 187 transitions. [2024-06-28 00:34:11,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 859 transitions, 19876 flow [2024-06-28 00:34:13,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 859 transitions, 19622 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 00:34:13,515 INFO L231 Difference]: Finished difference. Result has 402 places, 810 transitions, 17758 flow [2024-06-28 00:34:13,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17149, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17758, PETRI_PLACES=402, PETRI_TRANSITIONS=810} [2024-06-28 00:34:13,516 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 00:34:13,516 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 810 transitions, 17758 flow [2024-06-28 00:34:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:13,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:13,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:34:13,517 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:13,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1807447058, now seen corresponding path program 2 times [2024-06-28 00:34:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:13,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981530976] [2024-06-28 00:34:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:15,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981530976] [2024-06-28 00:34:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981530976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:15,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:15,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681582138] [2024-06-28 00:34:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:15,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:15,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 810 transitions, 17758 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:15,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:15,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:17,545 INFO L124 PetriNetUnfolderBase]: 4660/7073 cut-off events. [2024-06-28 00:34:17,545 INFO L125 PetriNetUnfolderBase]: For 790774/790782 co-relation queries the response was YES. [2024-06-28 00:34:17,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79344 conditions, 7073 events. 4660/7073 cut-off events. For 790774/790782 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 40720 event pairs, 734 based on Foata normal form. 12/7084 useless extension candidates. Maximal degree in co-relation 79164. Up to 6461 conditions per place. [2024-06-28 00:34:17,678 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 631 selfloop transitions, 219 changer transitions 0/853 dead transitions. [2024-06-28 00:34:17,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 853 transitions, 19753 flow [2024-06-28 00:34:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:34:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:34:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 00:34:17,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-06-28 00:34:17,679 INFO L175 Difference]: Start difference. First operand has 402 places, 810 transitions, 17758 flow. Second operand 11 states and 179 transitions. [2024-06-28 00:34:17,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 853 transitions, 19753 flow [2024-06-28 00:34:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 853 transitions, 19422 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:34:19,961 INFO L231 Difference]: Finished difference. Result has 407 places, 816 transitions, 18044 flow [2024-06-28 00:34:19,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17441, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18044, PETRI_PLACES=407, PETRI_TRANSITIONS=816} [2024-06-28 00:34:19,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 00:34:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 816 transitions, 18044 flow [2024-06-28 00:34:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:19,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:19,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:19,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:34:19,963 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:19,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1807239451, now seen corresponding path program 3 times [2024-06-28 00:34:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225242752] [2024-06-28 00:34:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:19,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:21,375 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 00:34:21,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225242752] [2024-06-28 00:34:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225242752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:21,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:21,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:21,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397948012] [2024-06-28 00:34:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:21,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:21,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:21,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:21,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 816 transitions, 18044 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:21,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:21,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:21,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:23,826 INFO L124 PetriNetUnfolderBase]: 4678/7099 cut-off events. [2024-06-28 00:34:23,826 INFO L125 PetriNetUnfolderBase]: For 800058/800066 co-relation queries the response was YES. [2024-06-28 00:34:23,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80160 conditions, 7099 events. 4678/7099 cut-off events. For 800058/800066 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 40919 event pairs, 729 based on Foata normal form. 11/7109 useless extension candidates. Maximal degree in co-relation 79977. Up to 6355 conditions per place. [2024-06-28 00:34:23,948 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 592 selfloop transitions, 255 changer transitions 0/850 dead transitions. [2024-06-28 00:34:23,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 850 transitions, 20030 flow [2024-06-28 00:34:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:34:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:34:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:34:23,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 00:34:23,951 INFO L175 Difference]: Start difference. First operand has 407 places, 816 transitions, 18044 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:34:23,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 850 transitions, 20030 flow [2024-06-28 00:34:26,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 850 transitions, 19709 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 00:34:26,399 INFO L231 Difference]: Finished difference. Result has 410 places, 822 transitions, 18524 flow [2024-06-28 00:34:26,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17723, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18524, PETRI_PLACES=410, PETRI_TRANSITIONS=822} [2024-06-28 00:34:26,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-28 00:34:26,400 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 822 transitions, 18524 flow [2024-06-28 00:34:26,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:26,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:26,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:26,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:34:26,401 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 00:34:26,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1095956941, now seen corresponding path program 1 times [2024-06-28 00:34:26,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:26,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635985929] [2024-06-28 00:34:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:27,581 INFO 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 00:34:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635985929] [2024-06-28 00:34:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635985929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:27,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:27,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:27,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575598569] [2024-06-28 00:34:27,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:27,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:27,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:27,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:27,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 822 transitions, 18524 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:27,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:27,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:27,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:30,235 INFO L124 PetriNetUnfolderBase]: 4688/7119 cut-off events. [2024-06-28 00:34:30,236 INFO L125 PetriNetUnfolderBase]: For 814560/814562 co-relation queries the response was YES. [2024-06-28 00:34:30,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81489 conditions, 7119 events. 4688/7119 cut-off events. For 814560/814562 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 41206 event pairs, 1313 based on Foata normal form. 4/7122 useless extension candidates. Maximal degree in co-relation 81304. Up to 7031 conditions per place. [2024-06-28 00:34:30,351 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 811 selfloop transitions, 30 changer transitions 0/844 dead transitions. [2024-06-28 00:34:30,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 844 transitions, 20316 flow [2024-06-28 00:34:30,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 00:34:30,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 00:34:30,352 INFO L175 Difference]: Start difference. First operand has 410 places, 822 transitions, 18524 flow. Second operand 7 states and 116 transitions. [2024-06-28 00:34:30,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 844 transitions, 20316 flow [2024-06-28 00:34:32,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 844 transitions, 19793 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 00:34:32,389 INFO L231 Difference]: Finished difference. Result has 410 places, 825 transitions, 18120 flow [2024-06-28 00:34:32,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18001, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18120, PETRI_PLACES=410, PETRI_TRANSITIONS=825} [2024-06-28 00:34:32,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-28 00:34:32,390 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 825 transitions, 18120 flow [2024-06-28 00:34:32,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:32,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:32,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:32,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:34:32,391 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:32,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1315805898, now seen corresponding path program 8 times [2024-06-28 00:34:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:32,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270062758] [2024-06-28 00:34:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:33,538 INFO 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 00:34:33,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270062758] [2024-06-28 00:34:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270062758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603287849] [2024-06-28 00:34:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:33,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:33,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 825 transitions, 18120 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:33,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:33,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:35,919 INFO L124 PetriNetUnfolderBase]: 4749/7210 cut-off events. [2024-06-28 00:34:35,919 INFO L125 PetriNetUnfolderBase]: For 838901/838909 co-relation queries the response was YES. [2024-06-28 00:34:36,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82009 conditions, 7210 events. 4749/7210 cut-off events. For 838901/838909 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 41853 event pairs, 759 based on Foata normal form. 12/7218 useless extension candidates. Maximal degree in co-relation 81824. Up to 6836 conditions per place. [2024-06-28 00:34:36,041 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 783 selfloop transitions, 89 changer transitions 0/875 dead transitions. [2024-06-28 00:34:36,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 875 transitions, 20397 flow [2024-06-28 00:34:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:34:36,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 00:34:36,043 INFO L175 Difference]: Start difference. First operand has 410 places, 825 transitions, 18120 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:34:36,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 875 transitions, 20397 flow [2024-06-28 00:34:38,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 875 transitions, 20293 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:38,476 INFO L231 Difference]: Finished difference. Result has 417 places, 845 transitions, 18702 flow [2024-06-28 00:34:38,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18016, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18702, PETRI_PLACES=417, PETRI_TRANSITIONS=845} [2024-06-28 00:34:38,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 00:34:38,477 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 845 transitions, 18702 flow [2024-06-28 00:34:38,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:38,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:38,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:38,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:34:38,478 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:38,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1832805870, now seen corresponding path program 9 times [2024-06-28 00:34:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358981179] [2024-06-28 00:34:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358981179] [2024-06-28 00:34:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358981179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261718982] [2024-06-28 00:34:39,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:39,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:39,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:39,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 845 transitions, 18702 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:39,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:39,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:42,074 INFO L124 PetriNetUnfolderBase]: 4810/7315 cut-off events. [2024-06-28 00:34:42,074 INFO L125 PetriNetUnfolderBase]: For 863213/863219 co-relation queries the response was YES. [2024-06-28 00:34:42,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83618 conditions, 7315 events. 4810/7315 cut-off events. For 863213/863219 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 42576 event pairs, 826 based on Foata normal form. 10/7321 useless extension candidates. Maximal degree in co-relation 83430. Up to 6939 conditions per place. [2024-06-28 00:34:42,207 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 756 selfloop transitions, 123 changer transitions 0/882 dead transitions. [2024-06-28 00:34:42,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 882 transitions, 20760 flow [2024-06-28 00:34:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:34:42,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-28 00:34:42,209 INFO L175 Difference]: Start difference. First operand has 417 places, 845 transitions, 18702 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:34:42,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 882 transitions, 20760 flow [2024-06-28 00:34:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 882 transitions, 20459 flow, removed 127 selfloop flow, removed 4 redundant places. [2024-06-28 00:34:44,906 INFO L231 Difference]: Finished difference. Result has 423 places, 855 transitions, 18892 flow [2024-06-28 00:34:44,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18401, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18892, PETRI_PLACES=423, PETRI_TRANSITIONS=855} [2024-06-28 00:34:44,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 00:34:44,907 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 855 transitions, 18892 flow [2024-06-28 00:34:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:44,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:44,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:34:44,908 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:44,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1832809590, now seen corresponding path program 10 times [2024-06-28 00:34:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342305687] [2024-06-28 00:34:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342305687] [2024-06-28 00:34:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342305687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:46,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:34:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374756688] [2024-06-28 00:34:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:34:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:34:46,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:34:46,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:46,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 855 transitions, 18892 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:46,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:46,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:46,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:48,527 INFO L124 PetriNetUnfolderBase]: 4871/7404 cut-off events. [2024-06-28 00:34:48,528 INFO L125 PetriNetUnfolderBase]: For 881101/881107 co-relation queries the response was YES. [2024-06-28 00:34:48,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84584 conditions, 7404 events. 4871/7404 cut-off events. For 881101/881107 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 43225 event pairs, 800 based on Foata normal form. 10/7410 useless extension candidates. Maximal degree in co-relation 84394. Up to 6880 conditions per place. [2024-06-28 00:34:48,878 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 762 selfloop transitions, 134 changer transitions 0/899 dead transitions. [2024-06-28 00:34:48,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 899 transitions, 21088 flow [2024-06-28 00:34:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:34:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:34:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:34:48,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-06-28 00:34:48,881 INFO L175 Difference]: Start difference. First operand has 423 places, 855 transitions, 18892 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:34:48,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 899 transitions, 21088 flow [2024-06-28 00:34:51,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 899 transitions, 20787 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:51,414 INFO L231 Difference]: Finished difference. Result has 426 places, 871 transitions, 19250 flow [2024-06-28 00:34:51,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18591, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19250, PETRI_PLACES=426, PETRI_TRANSITIONS=871} [2024-06-28 00:34:51,415 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 00:34:51,415 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 871 transitions, 19250 flow [2024-06-28 00:34:51,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:51,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:51,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:51,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:34:51,415 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:51,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1746113905, now seen corresponding path program 4 times [2024-06-28 00:34:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032907900] [2024-06-28 00:34:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032907900] [2024-06-28 00:34:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032907900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:34:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698446654] [2024-06-28 00:34:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:52,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:34:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:34:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:34:52,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:34:52,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 871 transitions, 19250 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:52,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:52,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:34:52,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:55,812 INFO L124 PetriNetUnfolderBase]: 4866/7390 cut-off events. [2024-06-28 00:34:55,812 INFO L125 PetriNetUnfolderBase]: For 886355/886361 co-relation queries the response was YES. [2024-06-28 00:34:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84775 conditions, 7390 events. 4866/7390 cut-off events. For 886355/886361 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 42964 event pairs, 767 based on Foata normal form. 8/7394 useless extension candidates. Maximal degree in co-relation 84583. Up to 6865 conditions per place. [2024-06-28 00:34:56,000 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 717 selfloop transitions, 175 changer transitions 0/895 dead transitions. [2024-06-28 00:34:56,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 895 transitions, 21131 flow [2024-06-28 00:34:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:34:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:34:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:34:56,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 00:34:56,003 INFO L175 Difference]: Start difference. First operand has 426 places, 871 transitions, 19250 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:34:56,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 895 transitions, 21131 flow [2024-06-28 00:35:00,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 895 transitions, 20867 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-28 00:35:00,075 INFO L231 Difference]: Finished difference. Result has 428 places, 873 transitions, 19405 flow [2024-06-28 00:35:00,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18986, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19405, PETRI_PLACES=428, PETRI_TRANSITIONS=873} [2024-06-28 00:35:00,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 00:35:00,076 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 873 transitions, 19405 flow [2024-06-28 00:35:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:00,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:00,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:00,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:35:00,077 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:00,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 571022510, now seen corresponding path program 11 times [2024-06-28 00:35:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653539738] [2024-06-28 00:35:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:01,540 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 00:35:01,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653539738] [2024-06-28 00:35:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653539738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:01,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:01,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:01,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018599330] [2024-06-28 00:35:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:01,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:01,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:01,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 873 transitions, 19405 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:01,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:01,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:01,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:04,083 INFO L124 PetriNetUnfolderBase]: 4894/7434 cut-off events. [2024-06-28 00:35:04,084 INFO L125 PetriNetUnfolderBase]: For 912913/912919 co-relation queries the response was YES. [2024-06-28 00:35:04,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85929 conditions, 7434 events. 4894/7434 cut-off events. For 912913/912919 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 43333 event pairs, 777 based on Foata normal form. 10/7440 useless extension candidates. Maximal degree in co-relation 85735. Up to 6989 conditions per place. [2024-06-28 00:35:04,219 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 756 selfloop transitions, 145 changer transitions 0/904 dead transitions. [2024-06-28 00:35:04,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 904 transitions, 21509 flow [2024-06-28 00:35:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 00:35:04,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:35:04,221 INFO L175 Difference]: Start difference. First operand has 428 places, 873 transitions, 19405 flow. Second operand 9 states and 153 transitions. [2024-06-28 00:35:04,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 904 transitions, 21509 flow [2024-06-28 00:35:07,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 904 transitions, 21173 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:35:07,216 INFO L231 Difference]: Finished difference. Result has 431 places, 877 transitions, 19579 flow [2024-06-28 00:35:07,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19069, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19579, PETRI_PLACES=431, PETRI_TRANSITIONS=877} [2024-06-28 00:35:07,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-28 00:35:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 877 transitions, 19579 flow [2024-06-28 00:35:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:07,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:35:07,218 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:07,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash 571018790, now seen corresponding path program 12 times [2024-06-28 00:35:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889974336] [2024-06-28 00:35:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:08,865 INFO 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 00:35:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889974336] [2024-06-28 00:35:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889974336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945887117] [2024-06-28 00:35:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:08,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 877 transitions, 19579 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:08,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:08,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:08,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:11,661 INFO L124 PetriNetUnfolderBase]: 4958/7534 cut-off events. [2024-06-28 00:35:11,661 INFO L125 PetriNetUnfolderBase]: For 963164/963170 co-relation queries the response was YES. [2024-06-28 00:35:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88211 conditions, 7534 events. 4958/7534 cut-off events. For 963164/963170 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 44025 event pairs, 770 based on Foata normal form. 10/7540 useless extension candidates. Maximal degree in co-relation 88016. Up to 6991 conditions per place. [2024-06-28 00:35:11,793 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 762 selfloop transitions, 152 changer transitions 0/917 dead transitions. [2024-06-28 00:35:11,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 917 transitions, 22304 flow [2024-06-28 00:35:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:35:11,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 00:35:11,797 INFO L175 Difference]: Start difference. First operand has 431 places, 877 transitions, 19579 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:35:11,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 917 transitions, 22304 flow [2024-06-28 00:35:14,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 917 transitions, 21822 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:14,740 INFO L231 Difference]: Finished difference. Result has 434 places, 887 transitions, 19897 flow [2024-06-28 00:35:14,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19105, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19897, PETRI_PLACES=434, PETRI_TRANSITIONS=887} [2024-06-28 00:35:14,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 00:35:14,741 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 887 transitions, 19897 flow [2024-06-28 00:35:14,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:14,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:14,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:14,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:35:14,742 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:14,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1259041496, now seen corresponding path program 13 times [2024-06-28 00:35:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41868351] [2024-06-28 00:35:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:16,201 INFO 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 00:35:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41868351] [2024-06-28 00:35:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41868351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:16,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:16,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593821082] [2024-06-28 00:35:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:16,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:16,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:16,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 887 transitions, 19897 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:16,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:16,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:19,506 INFO L124 PetriNetUnfolderBase]: 4950/7522 cut-off events. [2024-06-28 00:35:19,506 INFO L125 PetriNetUnfolderBase]: For 959000/959006 co-relation queries the response was YES. [2024-06-28 00:35:19,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87347 conditions, 7522 events. 4950/7522 cut-off events. For 959000/959006 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 43983 event pairs, 780 based on Foata normal form. 10/7528 useless extension candidates. Maximal degree in co-relation 87150. Up to 7077 conditions per place. [2024-06-28 00:35:19,711 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 757 selfloop transitions, 155 changer transitions 0/915 dead transitions. [2024-06-28 00:35:19,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 915 transitions, 21890 flow [2024-06-28 00:35:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:35:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:35:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:35:19,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 00:35:19,714 INFO L175 Difference]: Start difference. First operand has 434 places, 887 transitions, 19897 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:35:19,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 915 transitions, 21890 flow [2024-06-28 00:35:24,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 915 transitions, 21280 flow, removed 227 selfloop flow, removed 5 redundant places. [2024-06-28 00:35:24,430 INFO L231 Difference]: Finished difference. Result has 439 places, 888 transitions, 19678 flow [2024-06-28 00:35:24,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19347, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19678, PETRI_PLACES=439, PETRI_TRANSITIONS=888} [2024-06-28 00:35:24,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 00:35:24,432 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 888 transitions, 19678 flow [2024-06-28 00:35:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:24,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:24,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:24,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:35:24,432 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:24,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash 576736802, now seen corresponding path program 3 times [2024-06-28 00:35:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012823271] [2024-06-28 00:35:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012823271] [2024-06-28 00:35:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012823271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:26,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:26,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596865653] [2024-06-28 00:35:26,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:26,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:26,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 888 transitions, 19678 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:26,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:26,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:29,755 INFO L124 PetriNetUnfolderBase]: 5069/7719 cut-off events. [2024-06-28 00:35:29,756 INFO L125 PetriNetUnfolderBase]: For 1054198/1054204 co-relation queries the response was YES. [2024-06-28 00:35:29,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88551 conditions, 7719 events. 5069/7719 cut-off events. For 1054198/1054204 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 45438 event pairs, 806 based on Foata normal form. 36/7751 useless extension candidates. Maximal degree in co-relation 88352. Up to 7090 conditions per place. [2024-06-28 00:35:29,945 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 762 selfloop transitions, 162 changer transitions 0/927 dead transitions. [2024-06-28 00:35:29,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 927 transitions, 21854 flow [2024-06-28 00:35:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:35:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:35:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:35:29,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:35:29,947 INFO L175 Difference]: Start difference. First operand has 439 places, 888 transitions, 19678 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:35:29,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 927 transitions, 21854 flow [2024-06-28 00:35:34,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 927 transitions, 21538 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:34,121 INFO L231 Difference]: Finished difference. Result has 444 places, 891 transitions, 19840 flow [2024-06-28 00:35:34,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19362, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19840, PETRI_PLACES=444, PETRI_TRANSITIONS=891} [2024-06-28 00:35:34,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 00:35:34,122 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 891 transitions, 19840 flow [2024-06-28 00:35:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:34,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:34,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:34,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:35:34,122 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:34,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1259256698, now seen corresponding path program 4 times [2024-06-28 00:35:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929682443] [2024-06-28 00:35:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:35,566 INFO 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 00:35:35,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:35,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929682443] [2024-06-28 00:35:35,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929682443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:35,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:35,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:35:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477538479] [2024-06-28 00:35:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:35:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:35:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:35:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:35,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 891 transitions, 19840 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:35,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:35,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:38,674 INFO L124 PetriNetUnfolderBase]: 5185/7911 cut-off events. [2024-06-28 00:35:38,675 INFO L125 PetriNetUnfolderBase]: For 1057264/1057270 co-relation queries the response was YES. [2024-06-28 00:35:39,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92102 conditions, 7911 events. 5185/7911 cut-off events. For 1057264/1057270 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 46760 event pairs, 839 based on Foata normal form. 10/7917 useless extension candidates. Maximal degree in co-relation 91901. Up to 6734 conditions per place. [2024-06-28 00:35:39,047 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 763 selfloop transitions, 171 changer transitions 0/937 dead transitions. [2024-06-28 00:35:39,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 937 transitions, 22528 flow [2024-06-28 00:35:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:35:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:35:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:35:39,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:35:39,049 INFO L175 Difference]: Start difference. First operand has 444 places, 891 transitions, 19840 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:35:39,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 937 transitions, 22528 flow [2024-06-28 00:35:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 937 transitions, 22008 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 00:35:42,154 INFO L231 Difference]: Finished difference. Result has 445 places, 896 transitions, 19899 flow [2024-06-28 00:35:42,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19899, PETRI_PLACES=445, PETRI_TRANSITIONS=896} [2024-06-28 00:35:42,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 00:35:42,155 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 896 transitions, 19899 flow [2024-06-28 00:35:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:42,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:42,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:35:42,156 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 00:35:42,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2133100327, now seen corresponding path program 2 times [2024-06-28 00:35:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48645839] [2024-06-28 00:35:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:43,498 INFO 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 00:35:43,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:43,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48645839] [2024-06-28 00:35:43,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48645839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:43,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:43,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272373166] [2024-06-28 00:35:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:43,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:43,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:43,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:43,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 896 transitions, 19899 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:43,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:43,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:46,143 INFO L124 PetriNetUnfolderBase]: 5210/7953 cut-off events. [2024-06-28 00:35:46,144 INFO L125 PetriNetUnfolderBase]: For 1059432/1059434 co-relation queries the response was YES. [2024-06-28 00:35:46,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92313 conditions, 7953 events. 5210/7953 cut-off events. For 1059432/1059434 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 47393 event pairs, 1449 based on Foata normal form. 4/7955 useless extension candidates. Maximal degree in co-relation 92111. Up to 7835 conditions per place. [2024-06-28 00:35:46,309 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 876 selfloop transitions, 47 changer transitions 0/926 dead transitions. [2024-06-28 00:35:46,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 926 transitions, 22154 flow [2024-06-28 00:35:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 00:35:46,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:35:46,311 INFO L175 Difference]: Start difference. First operand has 445 places, 896 transitions, 19899 flow. Second operand 9 states and 135 transitions. [2024-06-28 00:35:46,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 926 transitions, 22154 flow [2024-06-28 00:35:49,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 926 transitions, 21824 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:49,655 INFO L231 Difference]: Finished difference. Result has 447 places, 908 transitions, 19854 flow [2024-06-28 00:35:49,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19569, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19854, PETRI_PLACES=447, PETRI_TRANSITIONS=908} [2024-06-28 00:35:49,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 00:35:49,656 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 908 transitions, 19854 flow [2024-06-28 00:35:49,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:49,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:49,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:49,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:35:49,656 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:49,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash -280794660, now seen corresponding path program 5 times [2024-06-28 00:35:49,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:49,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957210748] [2024-06-28 00:35:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:49,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957210748] [2024-06-28 00:35:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957210748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:51,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:51,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:35:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436641490] [2024-06-28 00:35:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:35:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:35:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:35:51,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:35:51,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 908 transitions, 19854 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:51,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:51,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:35:51,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:54,404 INFO L124 PetriNetUnfolderBase]: 5227/7976 cut-off events. [2024-06-28 00:35:54,404 INFO L125 PetriNetUnfolderBase]: For 1088281/1088289 co-relation queries the response was YES. [2024-06-28 00:35:54,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92555 conditions, 7976 events. 5227/7976 cut-off events. For 1088281/1088289 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 47400 event pairs, 862 based on Foata normal form. 12/7984 useless extension candidates. Maximal degree in co-relation 92351. Up to 7333 conditions per place. [2024-06-28 00:35:54,640 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 738 selfloop transitions, 204 changer transitions 0/945 dead transitions. [2024-06-28 00:35:54,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 945 transitions, 22025 flow [2024-06-28 00:35:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:35:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:35:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 00:35:54,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 00:35:54,642 INFO L175 Difference]: Start difference. First operand has 447 places, 908 transitions, 19854 flow. Second operand 10 states and 167 transitions. [2024-06-28 00:35:54,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 945 transitions, 22025 flow [2024-06-28 00:35:59,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 945 transitions, 21925 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 00:35:59,135 INFO L231 Difference]: Finished difference. Result has 453 places, 913 transitions, 20331 flow [2024-06-28 00:35:59,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19754, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20331, PETRI_PLACES=453, PETRI_TRANSITIONS=913} [2024-06-28 00:35:59,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-28 00:35:59,136 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 913 transitions, 20331 flow [2024-06-28 00:35:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:59,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:59,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:35:59,137 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:59,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -280787220, now seen corresponding path program 6 times [2024-06-28 00:35:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903239748] [2024-06-28 00:35:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:00,898 INFO 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 00:36:00,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:00,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903239748] [2024-06-28 00:36:00,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903239748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:00,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:00,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:00,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402984903] [2024-06-28 00:36:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:01,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:01,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 913 transitions, 20331 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:01,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:01,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:01,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:04,492 INFO L124 PetriNetUnfolderBase]: 5355/8184 cut-off events. [2024-06-28 00:36:04,492 INFO L125 PetriNetUnfolderBase]: For 1206267/1206275 co-relation queries the response was YES. [2024-06-28 00:36:04,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97559 conditions, 8184 events. 5355/8184 cut-off events. For 1206267/1206275 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 48887 event pairs, 899 based on Foata normal form. 12/8192 useless extension candidates. Maximal degree in co-relation 97354. Up to 7304 conditions per place. [2024-06-28 00:36:04,710 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 746 selfloop transitions, 207 changer transitions 0/956 dead transitions. [2024-06-28 00:36:04,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 956 transitions, 23028 flow [2024-06-28 00:36:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:36:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:36:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:36:04,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:36:04,712 INFO L175 Difference]: Start difference. First operand has 453 places, 913 transitions, 20331 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:36:04,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 956 transitions, 23028 flow [2024-06-28 00:36:10,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 956 transitions, 22667 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 00:36:10,106 INFO L231 Difference]: Finished difference. Result has 460 places, 917 transitions, 20625 flow [2024-06-28 00:36:10,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19970, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20625, PETRI_PLACES=460, PETRI_TRANSITIONS=917} [2024-06-28 00:36:10,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-28 00:36:10,107 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 917 transitions, 20625 flow [2024-06-28 00:36:10,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:10,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:10,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:36:10,108 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash -286508952, now seen corresponding path program 14 times [2024-06-28 00:36:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:10,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140580151] [2024-06-28 00:36:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140580151] [2024-06-28 00:36:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140580151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:11,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:11,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:36:11,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297442103] [2024-06-28 00:36:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:11,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:36:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:36:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:36:11,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:11,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 917 transitions, 20625 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:11,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:11,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:11,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:14,633 INFO L124 PetriNetUnfolderBase]: 5372/8211 cut-off events. [2024-06-28 00:36:14,633 INFO L125 PetriNetUnfolderBase]: For 1236696/1236704 co-relation queries the response was YES. [2024-06-28 00:36:14,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98746 conditions, 8211 events. 5372/8211 cut-off events. For 1236696/1236704 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 49199 event pairs, 900 based on Foata normal form. 12/8219 useless extension candidates. Maximal degree in co-relation 98538. Up to 7391 conditions per place. [2024-06-28 00:36:15,040 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 713 selfloop transitions, 230 changer transitions 0/946 dead transitions. [2024-06-28 00:36:15,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 946 transitions, 22747 flow [2024-06-28 00:36:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:36:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:36:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:36:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-28 00:36:15,042 INFO L175 Difference]: Start difference. First operand has 460 places, 917 transitions, 20625 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:36:15,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 946 transitions, 22747 flow [2024-06-28 00:36:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 946 transitions, 22381 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 00:36:18,919 INFO L231 Difference]: Finished difference. Result has 463 places, 919 transitions, 20862 flow [2024-06-28 00:36:18,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20259, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20862, PETRI_PLACES=463, PETRI_TRANSITIONS=919} [2024-06-28 00:36:18,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-28 00:36:18,924 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 919 transitions, 20862 flow [2024-06-28 00:36:18,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:18,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:18,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:36:18,925 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -286508797, now seen corresponding path program 5 times [2024-06-28 00:36:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246291689] [2024-06-28 00:36:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:20,518 INFO 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 00:36:20,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246291689] [2024-06-28 00:36:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246291689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:36:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650687886] [2024-06-28 00:36:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:20,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:36:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:36:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:36:20,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:20,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 919 transitions, 20862 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:20,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:20,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:23,784 INFO L124 PetriNetUnfolderBase]: 5405/8259 cut-off events. [2024-06-28 00:36:23,785 INFO L125 PetriNetUnfolderBase]: For 1242983/1242991 co-relation queries the response was YES. [2024-06-28 00:36:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99625 conditions, 8259 events. 5405/8259 cut-off events. For 1242983/1242991 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49475 event pairs, 904 based on Foata normal form. 10/8265 useless extension candidates. Maximal degree in co-relation 99415. Up to 7430 conditions per place. [2024-06-28 00:36:23,949 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 715 selfloop transitions, 236 changer transitions 0/954 dead transitions. [2024-06-28 00:36:23,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 954 transitions, 23079 flow [2024-06-28 00:36:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:36:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:36:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:36:23,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:36:23,950 INFO L175 Difference]: Start difference. First operand has 463 places, 919 transitions, 20862 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:36:23,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 954 transitions, 23079 flow [2024-06-28 00:36:28,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 954 transitions, 22494 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:28,389 INFO L231 Difference]: Finished difference. Result has 465 places, 927 transitions, 20983 flow [2024-06-28 00:36:28,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20277, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20983, PETRI_PLACES=465, PETRI_TRANSITIONS=927} [2024-06-28 00:36:28,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-28 00:36:28,396 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 927 transitions, 20983 flow [2024-06-28 00:36:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:28,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:28,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:28,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:36:28,397 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -281002422, now seen corresponding path program 15 times [2024-06-28 00:36:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478532983] [2024-06-28 00:36:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:30,356 INFO 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 00:36:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478532983] [2024-06-28 00:36:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478532983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:30,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:36:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203131229] [2024-06-28 00:36:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:36:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:36:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:36:30,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:30,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 927 transitions, 20983 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:30,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:30,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:30,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:34,353 INFO L124 PetriNetUnfolderBase]: 5422/8286 cut-off events. [2024-06-28 00:36:34,353 INFO L125 PetriNetUnfolderBase]: For 1280428/1280436 co-relation queries the response was YES. [2024-06-28 00:36:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100485 conditions, 8286 events. 5422/8286 cut-off events. For 1280428/1280436 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 49686 event pairs, 905 based on Foata normal form. 12/8294 useless extension candidates. Maximal degree in co-relation 100274. Up to 7466 conditions per place. [2024-06-28 00:36:34,537 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 724 selfloop transitions, 229 changer transitions 0/956 dead transitions. [2024-06-28 00:36:34,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 956 transitions, 23131 flow [2024-06-28 00:36:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:36:34,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 00:36:34,539 INFO L175 Difference]: Start difference. First operand has 465 places, 927 transitions, 20983 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:36:34,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 956 transitions, 23131 flow [2024-06-28 00:36:40,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 956 transitions, 22549 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:40,501 INFO L231 Difference]: Finished difference. Result has 466 places, 929 transitions, 21008 flow [2024-06-28 00:36:40,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20401, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21008, PETRI_PLACES=466, PETRI_TRANSITIONS=929} [2024-06-28 00:36:40,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-28 00:36:40,502 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 929 transitions, 21008 flow [2024-06-28 00:36:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:40,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:40,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:40,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:36:40,503 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:40,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash -280996470, now seen corresponding path program 7 times [2024-06-28 00:36:40,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:40,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109109790] [2024-06-28 00:36:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:42,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109109790] [2024-06-28 00:36:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109109790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:42,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:42,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:36:42,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40037645] [2024-06-28 00:36:42,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:42,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:36:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:36:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:36:42,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:42,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 929 transitions, 21008 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:42,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:42,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:42,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:45,965 INFO L124 PetriNetUnfolderBase]: 5414/8274 cut-off events. [2024-06-28 00:36:45,966 INFO L125 PetriNetUnfolderBase]: For 1285050/1285058 co-relation queries the response was YES. [2024-06-28 00:36:46,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100205 conditions, 8274 events. 5414/8274 cut-off events. For 1285050/1285058 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 49599 event pairs, 893 based on Foata normal form. 12/8282 useless extension candidates. Maximal degree in co-relation 99993. Up to 7631 conditions per place. [2024-06-28 00:36:46,291 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 755 selfloop transitions, 200 changer transitions 0/958 dead transitions. [2024-06-28 00:36:46,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 958 transitions, 23056 flow [2024-06-28 00:36:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 00:36:46,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:36:46,295 INFO L175 Difference]: Start difference. First operand has 466 places, 929 transitions, 21008 flow. Second operand 9 states and 153 transitions. [2024-06-28 00:36:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 958 transitions, 23056 flow [2024-06-28 00:36:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 958 transitions, 22467 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 00:36:52,458 INFO L231 Difference]: Finished difference. Result has 469 places, 931 transitions, 20879 flow [2024-06-28 00:36:52,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20419, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20879, PETRI_PLACES=469, PETRI_TRANSITIONS=931} [2024-06-28 00:36:52,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-28 00:36:52,459 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 931 transitions, 20879 flow [2024-06-28 00:36:52,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:52,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:52,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:36:52,460 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:52,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -286512672, now seen corresponding path program 16 times [2024-06-28 00:36:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:52,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988200016] [2024-06-28 00:36:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:52,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:54,051 INFO 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 00:36:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988200016] [2024-06-28 00:36:54,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988200016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:54,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:54,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:36:54,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951707193] [2024-06-28 00:36:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:54,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:36:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:36:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:36:54,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:36:54,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 931 transitions, 20879 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:54,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:54,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:36:54,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:57,980 INFO L124 PetriNetUnfolderBase]: 5431/8301 cut-off events. [2024-06-28 00:36:57,981 INFO L125 PetriNetUnfolderBase]: For 1308632/1308640 co-relation queries the response was YES. [2024-06-28 00:36:58,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100560 conditions, 8301 events. 5431/8301 cut-off events. For 1308632/1308640 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 49781 event pairs, 896 based on Foata normal form. 12/8309 useless extension candidates. Maximal degree in co-relation 100346. Up to 7398 conditions per place. [2024-06-28 00:36:58,151 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 728 selfloop transitions, 235 changer transitions 0/966 dead transitions. [2024-06-28 00:36:58,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 966 transitions, 23583 flow [2024-06-28 00:36:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:36:58,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 00:36:58,153 INFO L175 Difference]: Start difference. First operand has 469 places, 931 transitions, 20879 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:36:58,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 966 transitions, 23583 flow [2024-06-28 00:37:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 966 transitions, 23153 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 00:37:01,818 INFO L231 Difference]: Finished difference. Result has 473 places, 936 transitions, 21231 flow [2024-06-28 00:37:01,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20449, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21231, PETRI_PLACES=473, PETRI_TRANSITIONS=936} [2024-06-28 00:37:01,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 00:37:01,833 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 936 transitions, 21231 flow [2024-06-28 00:37:01,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:01,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:01,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:37:01,834 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:01,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash 243724431, now seen corresponding path program 6 times [2024-06-28 00:37:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238933730] [2024-06-28 00:37:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238933730] [2024-06-28 00:37:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238933730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:37:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454203362] [2024-06-28 00:37:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:03,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:37:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:37:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:37:03,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:37:03,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 936 transitions, 21231 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:03,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:03,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:37:03,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:06,804 INFO L124 PetriNetUnfolderBase]: 5442/8317 cut-off events. [2024-06-28 00:37:06,805 INFO L125 PetriNetUnfolderBase]: For 1327731/1327739 co-relation queries the response was YES. [2024-06-28 00:37:06,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101241 conditions, 8317 events. 5442/8317 cut-off events. For 1327731/1327739 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 49878 event pairs, 903 based on Foata normal form. 10/8323 useless extension candidates. Maximal degree in co-relation 101025. Up to 7470 conditions per place. [2024-06-28 00:37:06,958 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 718 selfloop transitions, 240 changer transitions 0/961 dead transitions. [2024-06-28 00:37:06,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 961 transitions, 23375 flow [2024-06-28 00:37:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:37:06,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 00:37:06,960 INFO L175 Difference]: Start difference. First operand has 473 places, 936 transitions, 21231 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:37:06,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 961 transitions, 23375 flow [2024-06-28 00:37:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 961 transitions, 22929 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-28 00:37:11,216 INFO L231 Difference]: Finished difference. Result has 476 places, 939 transitions, 21436 flow [2024-06-28 00:37:11,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20785, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21436, PETRI_PLACES=476, PETRI_TRANSITIONS=939} [2024-06-28 00:37:11,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-28 00:37:11,216 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 939 transitions, 21436 flow [2024-06-28 00:37:11,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:11,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:11,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:37:11,217 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:11,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:11,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1281059464, now seen corresponding path program 8 times [2024-06-28 00:37:11,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:11,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730957072] [2024-06-28 00:37:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:11,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730957072] [2024-06-28 00:37:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730957072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:37:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088087866] [2024-06-28 00:37:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:37:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:37:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:37:13,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:37:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 939 transitions, 21436 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:13,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:37:13,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:18,256 INFO L124 PetriNetUnfolderBase]: 5570/8525 cut-off events. [2024-06-28 00:37:18,256 INFO L125 PetriNetUnfolderBase]: For 1463411/1463419 co-relation queries the response was YES. [2024-06-28 00:37:18,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106603 conditions, 8525 events. 5570/8525 cut-off events. For 1463411/1463419 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 51428 event pairs, 935 based on Foata normal form. 12/8533 useless extension candidates. Maximal degree in co-relation 106385. Up to 7640 conditions per place. [2024-06-28 00:37:18,418 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 753 selfloop transitions, 226 changer transitions 0/982 dead transitions. [2024-06-28 00:37:18,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 982 transitions, 24285 flow [2024-06-28 00:37:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:37:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:37:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:37:18,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:37:18,420 INFO L175 Difference]: Start difference. First operand has 476 places, 939 transitions, 21436 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:37:18,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 982 transitions, 24285 flow [2024-06-28 00:37:22,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 982 transitions, 23712 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 00:37:22,574 INFO L231 Difference]: Finished difference. Result has 481 places, 942 transitions, 21536 flow [2024-06-28 00:37:22,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20863, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21536, PETRI_PLACES=481, PETRI_TRANSITIONS=942} [2024-06-28 00:37:22,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-28 00:37:22,575 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 942 transitions, 21536 flow [2024-06-28 00:37:22,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:22,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:22,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:22,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:37:22,576 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:22,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1281274666, now seen corresponding path program 17 times [2024-06-28 00:37:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399558038] [2024-06-28 00:37:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:24,503 INFO 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 00:37:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399558038] [2024-06-28 00:37:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399558038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:37:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602807280] [2024-06-28 00:37:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:37:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:37:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:37:24,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:37:24,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 942 transitions, 21536 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:24,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:24,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:37:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:28,497 INFO L124 PetriNetUnfolderBase]: 5562/8513 cut-off events. [2024-06-28 00:37:28,497 INFO L125 PetriNetUnfolderBase]: For 1469065/1469073 co-relation queries the response was YES. [2024-06-28 00:37:28,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106374 conditions, 8513 events. 5562/8513 cut-off events. For 1469065/1469073 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 51394 event pairs, 938 based on Foata normal form. 12/8521 useless extension candidates. Maximal degree in co-relation 106155. Up to 7693 conditions per place. [2024-06-28 00:37:28,654 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 707 selfloop transitions, 260 changer transitions 0/970 dead transitions. [2024-06-28 00:37:28,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 970 transitions, 23621 flow [2024-06-28 00:37:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:37:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:37:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:37:28,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 00:37:28,655 INFO L175 Difference]: Start difference. First operand has 481 places, 942 transitions, 21536 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:37:28,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 970 transitions, 23621 flow [2024-06-28 00:37:33,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 970 transitions, 23068 flow, removed 132 selfloop flow, removed 8 redundant places. [2024-06-28 00:37:33,259 INFO L231 Difference]: Finished difference. Result has 482 places, 943 transitions, 21559 flow [2024-06-28 00:37:33,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=21021, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21559, PETRI_PLACES=482, PETRI_TRANSITIONS=943} [2024-06-28 00:37:33,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 00:37:33,260 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 943 transitions, 21559 flow [2024-06-28 00:37:33,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:33,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:33,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:33,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:37:33,261 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:33,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1024558954, now seen corresponding path program 9 times [2024-06-28 00:37:33,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:33,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559178304] [2024-06-28 00:37:33,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559178304] [2024-06-28 00:37:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559178304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:37:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35292045] [2024-06-28 00:37:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:37:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:37:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:37:34,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:37:34,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 943 transitions, 21559 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:34,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:34,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:37:34,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:39,309 INFO L124 PetriNetUnfolderBase]: 5690/8721 cut-off events. [2024-06-28 00:37:39,310 INFO L125 PetriNetUnfolderBase]: For 1594084/1594092 co-relation queries the response was YES. [2024-06-28 00:37:39,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110943 conditions, 8721 events. 5690/8721 cut-off events. For 1594084/1594092 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 52869 event pairs, 976 based on Foata normal form. 12/8729 useless extension candidates. Maximal degree in co-relation 110723. Up to 7541 conditions per place. [2024-06-28 00:37:39,558 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 676 selfloop transitions, 307 changer transitions 0/986 dead transitions. [2024-06-28 00:37:39,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 986 transitions, 24447 flow [2024-06-28 00:37:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:37:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:37:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 00:37:39,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:37:39,560 INFO L175 Difference]: Start difference. First operand has 482 places, 943 transitions, 21559 flow. Second operand 10 states and 175 transitions. [2024-06-28 00:37:39,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 986 transitions, 24447 flow [2024-06-28 00:37:45,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 986 transitions, 23922 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:37:45,930 INFO L231 Difference]: Finished difference. Result has 485 places, 946 transitions, 21875 flow [2024-06-28 00:37:45,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=21034, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21875, PETRI_PLACES=485, PETRI_TRANSITIONS=946} [2024-06-28 00:37:45,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-28 00:37:45,931 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 946 transitions, 21875 flow [2024-06-28 00:37:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:45,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:45,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:37:45,932 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:45,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1281274511, now seen corresponding path program 7 times [2024-06-28 00:37:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576414161] [2024-06-28 00:37:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:47,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576414161] [2024-06-28 00:37:47,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576414161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:47,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:47,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:37:47,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408382191] [2024-06-28 00:37:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:47,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:37:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:37:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:37:47,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:37:47,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 946 transitions, 21875 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:47,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:47,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:37:47,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand