./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.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/mix026_power.opt_tso.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/mix026_power.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026_power.opt_tso.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 [2024-06-27 23:32:33,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:32:33,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:32:33,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:32:33,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:32:33,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:32:33,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:32:33,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:32:33,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:32:33,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:32:33,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:32:33,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:32:33,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:32:33,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:32:33,928 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:32:33,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:32:33,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:32:33,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:32:33,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:32:33,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:32:33,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:32:33,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:32:33,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:32:33,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:32:33,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:32:33,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:32:33,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:32:33,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:32:33,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:32:33,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:32:33,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:32:33,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:32:33,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:32:33,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:32:33,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:32:33,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:32:33,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:32:33,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:32:33,935 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:32:34,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:32:34,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:32:34,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:32:34,150 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:32:34,151 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:32:34,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix026_power.opt_tso.opt.yml/witness.yml [2024-06-27 23:32:34,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:32:34,216 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:32:34,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.opt.i [2024-06-27 23:32:35,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:32:35,459 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:32:35,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_power.opt_tso.opt.i [2024-06-27 23:32:35,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7372687/a9df438bf6854bc882814b21bc6c8016/FLAGc25363a73 [2024-06-27 23:32:35,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7372687/a9df438bf6854bc882814b21bc6c8016 [2024-06-27 23:32:35,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:32:35,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:32:35,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:32:35,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:32:35,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:32:35,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:32:34" (1/2) ... [2024-06-27 23:32:35,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b23adf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:32:35, skipping insertion in model container [2024-06-27 23:32:35,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:32:34" (1/2) ... [2024-06-27 23:32:35,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e630dc4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:32:35, skipping insertion in model container [2024-06-27 23:32:35,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:32:35" (2/2) ... [2024-06-27 23:32:35,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b23adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:35, skipping insertion in model container [2024-06-27 23:32:35,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:32:35" (2/2) ... [2024-06-27 23:32:35,494 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:32:35,522 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:32:35,523 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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) [2024-06-27 23:32:35,524 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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) [2024-06-27 23:32:35,524 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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) [2024-06-27 23:32:35,524 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 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 >= 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 >= 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 >= 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) [2024-06-27 23:32:35,524 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:32:35,525 INFO L106 edCorrectnessWitness]: ghost_update [L863-L863] multithreaded = 1; [2024-06-27 23:32:35,567 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:32:35,859 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:32:35,870 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:32:35,993 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:32:36,020 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:32:36,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36 WrapperNode [2024-06-27 23:32:36,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:32:36,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:32:36,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:32:36,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:32:36,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,082 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-27 23:32:36,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:32:36,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:32:36,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:32:36,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:32:36,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,117 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:32:36,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:32:36,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:32:36,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:32:36,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:32:36,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (1/1) ... [2024-06-27 23:32:36,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:32:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:32:36,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:32:36,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:32:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:32:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:32:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:32:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:32:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:32:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:32:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:32:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:32:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:32:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:32:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:32:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:32:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:32:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:32:36,232 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:32:36,362 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:32:36,364 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:32:36,866 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:32:36,866 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:32:37,083 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:32:37,083 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:32:37,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:32:37 BoogieIcfgContainer [2024-06-27 23:32:37,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:32:37,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:32:37,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:32:37,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:32:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:32:34" (1/4) ... [2024-06-27 23:32:37,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db9a825 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:32:37, skipping insertion in model container [2024-06-27 23:32:37,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:32:35" (2/4) ... [2024-06-27 23:32:37,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db9a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:32:37, skipping insertion in model container [2024-06-27 23:32:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:32:36" (3/4) ... [2024-06-27 23:32:37,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db9a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:32:37, skipping insertion in model container [2024-06-27 23:32:37,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:32:37" (4/4) ... [2024-06-27 23:32:37,090 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026_power.opt_tso.opt.i [2024-06-27 23:32:37,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:32:37,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:32:37,105 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:32:37,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:32:37,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:32:37,221 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 23:32:37,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:32:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:32:37,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:32:37,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-27 23:32:37,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:32:37,246 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;@3e2e9bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:32:37,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:32:37,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:32:37,252 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:32:37,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:32:37,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:37,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:32:37,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:37,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash 393972039, now seen corresponding path program 1 times [2024-06-27 23:32:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:37,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911992195] [2024-06-27 23:32:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911992195] [2024-06-27 23:32:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911992195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:32:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526276535] [2024-06-27 23:32:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:38,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:32:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:32:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:32:38,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-27 23:32:38,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:38,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:38,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-27 23:32:38,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:40,102 INFO L124 PetriNetUnfolderBase]: 8152/11667 cut-off events. [2024-06-27 23:32:40,103 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-27 23:32:40,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23154 conditions, 11667 events. 8152/11667 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65865 event pairs, 6174 based on Foata normal form. 1/11304 useless extension candidates. Maximal degree in co-relation 23141. Up to 11108 conditions per place. [2024-06-27 23:32:40,165 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 42 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 23:32:40,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 227 flow [2024-06-27 23:32:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:32:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:32:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 23:32:40,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-27 23:32:40,176 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-06-27 23:32:40,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 227 flow [2024-06-27 23:32:40,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:32:40,183 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-27 23:32:40,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 23:32:40,188 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-27 23:32:40,188 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-27 23:32:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:40,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:40,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:40,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:32:40,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:40,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash 650993028, now seen corresponding path program 1 times [2024-06-27 23:32:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212315080] [2024-06-27 23:32:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212315080] [2024-06-27 23:32:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212315080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:41,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:32:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717336241] [2024-06-27 23:32:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:41,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:32:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:32:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:32:41,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:32:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:41,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:41,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:32:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:42,848 INFO L124 PetriNetUnfolderBase]: 9537/13256 cut-off events. [2024-06-27 23:32:42,849 INFO L125 PetriNetUnfolderBase]: For 2494/2494 co-relation queries the response was YES. [2024-06-27 23:32:42,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30019 conditions, 13256 events. 9537/13256 cut-off events. For 2494/2494 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 72134 event pairs, 6489 based on Foata normal form. 4/13257 useless extension candidates. Maximal degree in co-relation 30007. Up to 12918 conditions per place. [2024-06-27 23:32:42,911 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 23:32:42,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-27 23:32:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:32:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:32:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 23:32:42,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-27 23:32:42,915 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 126 transitions. [2024-06-27 23:32:42,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-27 23:32:42,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:32:42,919 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-27 23:32:42,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 23:32:42,920 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-27 23:32:42,920 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-27 23:32:42,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:42,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:42,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:42,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:32:42,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:42,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1294051482, now seen corresponding path program 1 times [2024-06-27 23:32:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314144957] [2024-06-27 23:32:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:44,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:44,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314144957] [2024-06-27 23:32:44,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314144957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:44,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:32:44,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228358203] [2024-06-27 23:32:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:44,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:32:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:32:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:32:44,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:32:44,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:44,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:44,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:32:44,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:46,090 INFO L124 PetriNetUnfolderBase]: 9527/13236 cut-off events. [2024-06-27 23:32:46,090 INFO L125 PetriNetUnfolderBase]: For 7033/7033 co-relation queries the response was YES. [2024-06-27 23:32:46,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33398 conditions, 13236 events. 9527/13236 cut-off events. For 7033/7033 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71826 event pairs, 5670 based on Foata normal form. 4/13237 useless extension candidates. Maximal degree in co-relation 33384. Up to 12883 conditions per place. [2024-06-27 23:32:46,150 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 63 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-27 23:32:46,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 429 flow [2024-06-27 23:32:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:32:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:32:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-27 23:32:46,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-27 23:32:46,152 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 155 transitions. [2024-06-27 23:32:46,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 429 flow [2024-06-27 23:32:46,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 84 transitions, 410 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:32:46,155 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 227 flow [2024-06-27 23:32:46,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-27 23:32:46,156 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-06-27 23:32:46,156 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 227 flow [2024-06-27 23:32:46,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:46,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:46,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:32:46,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:46,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -615976893, now seen corresponding path program 1 times [2024-06-27 23:32:46,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:46,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598144427] [2024-06-27 23:32:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:47,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598144427] [2024-06-27 23:32:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598144427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:47,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:47,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:32:47,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995137485] [2024-06-27 23:32:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:32:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:32:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:47,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:32:47,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:47,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:47,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:32:47,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:49,205 INFO L124 PetriNetUnfolderBase]: 9511/13194 cut-off events. [2024-06-27 23:32:49,206 INFO L125 PetriNetUnfolderBase]: For 13572/13572 co-relation queries the response was YES. [2024-06-27 23:32:49,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36675 conditions, 13194 events. 9511/13194 cut-off events. For 13572/13572 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 71609 event pairs, 4705 based on Foata normal form. 8/13199 useless extension candidates. Maximal degree in co-relation 36660. Up to 12817 conditions per place. [2024-06-27 23:32:49,269 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 70 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 23:32:49,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2024-06-27 23:32:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:32:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:32:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 23:32:49,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-27 23:32:49,270 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 227 flow. Second operand 6 states and 180 transitions. [2024-06-27 23:32:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2024-06-27 23:32:49,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 480 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:32:49,274 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 258 flow [2024-06-27 23:32:49,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-27 23:32:49,275 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-27 23:32:49,275 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 258 flow [2024-06-27 23:32:49,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:49,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:49,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:49,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:32:49,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:49,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1194276801, now seen corresponding path program 1 times [2024-06-27 23:32:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656355421] [2024-06-27 23:32:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:50,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:50,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656355421] [2024-06-27 23:32:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656355421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:50,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:32:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938761950] [2024-06-27 23:32:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:50,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:32:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:32:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:32:50,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:32:50,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:50,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:50,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:32:50,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:51,999 INFO L124 PetriNetUnfolderBase]: 9502/13117 cut-off events. [2024-06-27 23:32:52,000 INFO L125 PetriNetUnfolderBase]: For 22936/22936 co-relation queries the response was YES. [2024-06-27 23:32:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39237 conditions, 13117 events. 9502/13117 cut-off events. For 22936/22936 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 71506 event pairs, 6417 based on Foata normal form. 3/13060 useless extension candidates. Maximal degree in co-relation 39220. Up to 12874 conditions per place. [2024-06-27 23:32:52,098 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 59 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-27 23:32:52,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 478 flow [2024-06-27 23:32:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:32:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:32:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 23:32:52,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 23:32:52,099 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 258 flow. Second operand 5 states and 128 transitions. [2024-06-27 23:32:52,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 478 flow [2024-06-27 23:32:52,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 430 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 23:32:52,104 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 294 flow [2024-06-27 23:32:52,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-27 23:32:52,105 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-27 23:32:52,105 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 294 flow [2024-06-27 23:32:52,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:52,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:52,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:32:52,106 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash 114563554, now seen corresponding path program 1 times [2024-06-27 23:32:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:52,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574297161] [2024-06-27 23:32:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574297161] [2024-06-27 23:32:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574297161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:32:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894673713] [2024-06-27 23:32:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:32:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:32:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:53,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:32:53,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:53,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:53,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:32:53,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:54,887 INFO L124 PetriNetUnfolderBase]: 9547/13203 cut-off events. [2024-06-27 23:32:54,887 INFO L125 PetriNetUnfolderBase]: For 31761/31761 co-relation queries the response was YES. [2024-06-27 23:32:54,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42699 conditions, 13203 events. 9547/13203 cut-off events. For 31761/31761 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 71912 event pairs, 5984 based on Foata normal form. 3/13173 useless extension candidates. Maximal degree in co-relation 42679. Up to 12907 conditions per place. [2024-06-27 23:32:54,972 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 75 selfloop transitions, 22 changer transitions 0/104 dead transitions. [2024-06-27 23:32:54,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 630 flow [2024-06-27 23:32:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:32:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:32:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 23:32:54,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49175824175824173 [2024-06-27 23:32:54,973 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 294 flow. Second operand 7 states and 179 transitions. [2024-06-27 23:32:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 630 flow [2024-06-27 23:32:54,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 597 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 23:32:54,981 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 397 flow [2024-06-27 23:32:54,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=261, 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-27 23:32:54,982 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 23:32:54,982 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 397 flow [2024-06-27 23:32:54,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:54,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:54,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:54,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:32:54,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:54,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:54,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2107554694, now seen corresponding path program 2 times [2024-06-27 23:32:54,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:54,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301162938] [2024-06-27 23:32:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:56,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301162938] [2024-06-27 23:32:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301162938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:56,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:56,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:32:56,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879900411] [2024-06-27 23:32:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:56,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:32:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:32:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:56,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:32:56,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:56,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:56,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:32:56,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:57,710 INFO L124 PetriNetUnfolderBase]: 9605/13283 cut-off events. [2024-06-27 23:32:57,711 INFO L125 PetriNetUnfolderBase]: For 44376/44376 co-relation queries the response was YES. [2024-06-27 23:32:57,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46671 conditions, 13283 events. 9605/13283 cut-off events. For 44376/44376 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72284 event pairs, 6035 based on Foata normal form. 3/13250 useless extension candidates. Maximal degree in co-relation 46648. Up to 12969 conditions per place. [2024-06-27 23:32:57,789 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 73 selfloop transitions, 29 changer transitions 0/109 dead transitions. [2024-06-27 23:32:57,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 793 flow [2024-06-27 23:32:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:32:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:32:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 23:32:57,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 23:32:57,790 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 397 flow. Second operand 6 states and 155 transitions. [2024-06-27 23:32:57,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 793 flow [2024-06-27 23:32:57,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 703 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 23:32:57,803 INFO L231 Difference]: Finished difference. Result has 73 places, 86 transitions, 517 flow [2024-06-27 23:32:57,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=73, PETRI_TRANSITIONS=86} [2024-06-27 23:32:57,803 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-27 23:32:57,803 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 86 transitions, 517 flow [2024-06-27 23:32:57,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:57,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:57,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:57,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:32:57,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:32:57,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2098467664, now seen corresponding path program 3 times [2024-06-27 23:32:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395093339] [2024-06-27 23:32:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:59,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395093339] [2024-06-27 23:32:59,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395093339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:59,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:32:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129844015] [2024-06-27 23:32:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:59,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:32:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:32:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:32:59,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:32:59,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 86 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:59,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:59,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:32:59,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:00,603 INFO L124 PetriNetUnfolderBase]: 9596/13283 cut-off events. [2024-06-27 23:33:00,603 INFO L125 PetriNetUnfolderBase]: For 58525/58525 co-relation queries the response was YES. [2024-06-27 23:33:00,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49916 conditions, 13283 events. 9596/13283 cut-off events. For 58525/58525 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72566 event pairs, 5991 based on Foata normal form. 3/13247 useless extension candidates. Maximal degree in co-relation 49891. Up to 12912 conditions per place. [2024-06-27 23:33:00,689 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 66 selfloop transitions, 40 changer transitions 0/113 dead transitions. [2024-06-27 23:33:00,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 849 flow [2024-06-27 23:33:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:33:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:33:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 23:33:00,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 23:33:00,690 INFO L175 Difference]: Start difference. First operand has 73 places, 86 transitions, 517 flow. Second operand 6 states and 155 transitions. [2024-06-27 23:33:00,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 849 flow [2024-06-27 23:33:00,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 802 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 23:33:00,704 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 617 flow [2024-06-27 23:33:00,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-06-27 23:33:00,705 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 23:33:00,705 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 617 flow [2024-06-27 23:33:00,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:00,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:00,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:33:00,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:00,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash -943703266, now seen corresponding path program 1 times [2024-06-27 23:33:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867896413] [2024-06-27 23:33:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867896413] [2024-06-27 23:33:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867896413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034435854] [2024-06-27 23:33:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:02,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:02,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:02,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:02,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:02,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:02,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:04,280 INFO L124 PetriNetUnfolderBase]: 9983/13883 cut-off events. [2024-06-27 23:33:04,281 INFO L125 PetriNetUnfolderBase]: For 77034/77034 co-relation queries the response was YES. [2024-06-27 23:33:04,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55108 conditions, 13883 events. 9983/13883 cut-off events. For 77034/77034 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 76561 event pairs, 6304 based on Foata normal form. 3/13725 useless extension candidates. Maximal degree in co-relation 55080. Up to 13512 conditions per place. [2024-06-27 23:33:04,365 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 101 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-27 23:33:04,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 128 transitions, 1018 flow [2024-06-27 23:33:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:33:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:33:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 23:33:04,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-27 23:33:04,367 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 617 flow. Second operand 7 states and 176 transitions. [2024-06-27 23:33:04,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 128 transitions, 1018 flow [2024-06-27 23:33:04,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 898 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:04,389 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 628 flow [2024-06-27 23:33:04,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-27 23:33:04,390 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-27 23:33:04,390 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 628 flow [2024-06-27 23:33:04,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:04,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:04,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:04,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:33:04,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:04,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1511423070, now seen corresponding path program 1 times [2024-06-27 23:33:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:04,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948805609] [2024-06-27 23:33:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948805609] [2024-06-27 23:33:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948805609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:05,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808608341] [2024-06-27 23:33:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:05,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:05,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:05,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 628 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:05,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:05,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:05,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:07,652 INFO L124 PetriNetUnfolderBase]: 11451/15833 cut-off events. [2024-06-27 23:33:07,652 INFO L125 PetriNetUnfolderBase]: For 109157/109165 co-relation queries the response was YES. [2024-06-27 23:33:07,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67884 conditions, 15833 events. 11451/15833 cut-off events. For 109157/109165 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87301 event pairs, 6446 based on Foata normal form. 11/15804 useless extension candidates. Maximal degree in co-relation 67854. Up to 15411 conditions per place. [2024-06-27 23:33:07,757 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 106 selfloop transitions, 35 changer transitions 0/149 dead transitions. [2024-06-27 23:33:07,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 149 transitions, 1120 flow [2024-06-27 23:33:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 23:33:07,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-27 23:33:07,759 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 628 flow. Second operand 8 states and 206 transitions. [2024-06-27 23:33:07,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 149 transitions, 1120 flow [2024-06-27 23:33:07,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 1051 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:07,783 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 751 flow [2024-06-27 23:33:07,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-27 23:33:07,784 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-27 23:33:07,784 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 751 flow [2024-06-27 23:33:07,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:07,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:07,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:07,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:33:07,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:07,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash -752870632, now seen corresponding path program 2 times [2024-06-27 23:33:07,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:07,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702771570] [2024-06-27 23:33:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:07,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702771570] [2024-06-27 23:33:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702771570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:09,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117866479] [2024-06-27 23:33:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:09,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:09,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:09,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:09,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:09,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:11,360 INFO L124 PetriNetUnfolderBase]: 11572/16106 cut-off events. [2024-06-27 23:33:11,360 INFO L125 PetriNetUnfolderBase]: For 130669/130717 co-relation queries the response was YES. [2024-06-27 23:33:11,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73615 conditions, 16106 events. 11572/16106 cut-off events. For 130669/130717 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 89455 event pairs, 5615 based on Foata normal form. 11/16114 useless extension candidates. Maximal degree in co-relation 73583. Up to 15554 conditions per place. [2024-06-27 23:33:11,451 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 109 selfloop transitions, 48 changer transitions 0/165 dead transitions. [2024-06-27 23:33:11,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 165 transitions, 1396 flow [2024-06-27 23:33:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 23:33:11,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-27 23:33:11,452 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 751 flow. Second operand 8 states and 206 transitions. [2024-06-27 23:33:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 165 transitions, 1396 flow [2024-06-27 23:33:11,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 165 transitions, 1214 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 23:33:11,484 INFO L231 Difference]: Finished difference. Result has 91 places, 127 transitions, 915 flow [2024-06-27 23:33:11,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=91, PETRI_TRANSITIONS=127} [2024-06-27 23:33:11,485 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 23:33:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 127 transitions, 915 flow [2024-06-27 23:33:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:11,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:11,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:33:11,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:11,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash 868693400, now seen corresponding path program 3 times [2024-06-27 23:33:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309567258] [2024-06-27 23:33:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309567258] [2024-06-27 23:33:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309567258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:13,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:13,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:13,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697146123] [2024-06-27 23:33:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:13,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:13,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 127 transitions, 915 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:13,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:13,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:13,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:15,228 INFO L124 PetriNetUnfolderBase]: 11885/16418 cut-off events. [2024-06-27 23:33:15,228 INFO L125 PetriNetUnfolderBase]: For 151003/151003 co-relation queries the response was YES. [2024-06-27 23:33:15,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76783 conditions, 16418 events. 11885/16418 cut-off events. For 151003/151003 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 88856 event pairs, 5709 based on Foata normal form. 3/16418 useless extension candidates. Maximal degree in co-relation 76749. Up to 15896 conditions per place. [2024-06-27 23:33:15,336 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 121 selfloop transitions, 58 changer transitions 0/185 dead transitions. [2024-06-27 23:33:15,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 1605 flow [2024-06-27 23:33:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 23:33:15,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47836538461538464 [2024-06-27 23:33:15,338 INFO L175 Difference]: Start difference. First operand has 91 places, 127 transitions, 915 flow. Second operand 8 states and 199 transitions. [2024-06-27 23:33:15,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 1605 flow [2024-06-27 23:33:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1472 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 23:33:15,377 INFO L231 Difference]: Finished difference. Result has 97 places, 147 transitions, 1167 flow [2024-06-27 23:33:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1167, PETRI_PLACES=97, PETRI_TRANSITIONS=147} [2024-06-27 23:33:15,377 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-27 23:33:15,378 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 147 transitions, 1167 flow [2024-06-27 23:33:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:15,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:15,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:33:15,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:15,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash -909805154, now seen corresponding path program 4 times [2024-06-27 23:33:15,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392428070] [2024-06-27 23:33:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:16,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:16,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392428070] [2024-06-27 23:33:16,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392428070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:16,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:16,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:16,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824073144] [2024-06-27 23:33:16,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:16,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:16,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:16,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:16,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:16,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:16,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 147 transitions, 1167 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:16,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:16,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:16,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:18,823 INFO L124 PetriNetUnfolderBase]: 11577/16147 cut-off events. [2024-06-27 23:33:18,823 INFO L125 PetriNetUnfolderBase]: For 181475/181527 co-relation queries the response was YES. [2024-06-27 23:33:18,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80798 conditions, 16147 events. 11577/16147 cut-off events. For 181475/181527 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 89571 event pairs, 5569 based on Foata normal form. 7/16139 useless extension candidates. Maximal degree in co-relation 80762. Up to 15555 conditions per place. [2024-06-27 23:33:18,941 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 132 selfloop transitions, 74 changer transitions 0/216 dead transitions. [2024-06-27 23:33:18,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 216 transitions, 2055 flow [2024-06-27 23:33:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 23:33:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 23:33:18,943 INFO L175 Difference]: Start difference. First operand has 97 places, 147 transitions, 1167 flow. Second operand 8 states and 195 transitions. [2024-06-27 23:33:18,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 216 transitions, 2055 flow [2024-06-27 23:33:19,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 216 transitions, 1941 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:19,003 INFO L231 Difference]: Finished difference. Result has 101 places, 185 transitions, 1649 flow [2024-06-27 23:33:19,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1649, PETRI_PLACES=101, PETRI_TRANSITIONS=185} [2024-06-27 23:33:19,004 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-27 23:33:19,004 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 185 transitions, 1649 flow [2024-06-27 23:33:19,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:19,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:19,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:19,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:33:19,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:19,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 632593180, now seen corresponding path program 5 times [2024-06-27 23:33:19,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:19,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94110744] [2024-06-27 23:33:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:19,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94110744] [2024-06-27 23:33:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94110744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:20,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928865412] [2024-06-27 23:33:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:20,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:20,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 185 transitions, 1649 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:20,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:20,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:23,194 INFO L124 PetriNetUnfolderBase]: 12107/16753 cut-off events. [2024-06-27 23:33:23,194 INFO L125 PetriNetUnfolderBase]: For 208417/208417 co-relation queries the response was YES. [2024-06-27 23:33:23,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86616 conditions, 16753 events. 12107/16753 cut-off events. For 208417/208417 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 90602 event pairs, 5715 based on Foata normal form. 3/16743 useless extension candidates. Maximal degree in co-relation 86578. Up to 16175 conditions per place. [2024-06-27 23:33:23,289 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 151 selfloop transitions, 75 changer transitions 0/232 dead transitions. [2024-06-27 23:33:23,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 232 transitions, 2410 flow [2024-06-27 23:33:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:33:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:33:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 23:33:23,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48626373626373626 [2024-06-27 23:33:23,290 INFO L175 Difference]: Start difference. First operand has 101 places, 185 transitions, 1649 flow. Second operand 7 states and 177 transitions. [2024-06-27 23:33:23,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 232 transitions, 2410 flow [2024-06-27 23:33:23,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 232 transitions, 2235 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 23:33:23,368 INFO L231 Difference]: Finished difference. Result has 106 places, 201 transitions, 1890 flow [2024-06-27 23:33:23,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1890, PETRI_PLACES=106, PETRI_TRANSITIONS=201} [2024-06-27 23:33:23,369 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-27 23:33:23,369 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 201 transitions, 1890 flow [2024-06-27 23:33:23,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:23,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:23,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:33:23,369 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:23,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash -905043554, now seen corresponding path program 6 times [2024-06-27 23:33:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801639232] [2024-06-27 23:33:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801639232] [2024-06-27 23:33:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801639232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:24,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:33:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359839933] [2024-06-27 23:33:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:24,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:33:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:33:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:33:25,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:25,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 201 transitions, 1890 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:25,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:25,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:25,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:27,196 INFO L124 PetriNetUnfolderBase]: 12098/16743 cut-off events. [2024-06-27 23:33:27,196 INFO L125 PetriNetUnfolderBase]: For 240127/240127 co-relation queries the response was YES. [2024-06-27 23:33:27,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90412 conditions, 16743 events. 12098/16743 cut-off events. For 240127/240127 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 90643 event pairs, 5727 based on Foata normal form. 3/16722 useless extension candidates. Maximal degree in co-relation 90372. Up to 16047 conditions per place. [2024-06-27 23:33:27,309 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 133 selfloop transitions, 100 changer transitions 0/239 dead transitions. [2024-06-27 23:33:27,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 239 transitions, 2568 flow [2024-06-27 23:33:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:33:27,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:33:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 23:33:27,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-27 23:33:27,321 INFO L175 Difference]: Start difference. First operand has 106 places, 201 transitions, 1890 flow. Second operand 7 states and 176 transitions. [2024-06-27 23:33:27,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 239 transitions, 2568 flow [2024-06-27 23:33:27,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 239 transitions, 2456 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 23:33:27,407 INFO L231 Difference]: Finished difference. Result has 111 places, 209 transitions, 2110 flow [2024-06-27 23:33:27,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2110, PETRI_PLACES=111, PETRI_TRANSITIONS=209} [2024-06-27 23:33:27,409 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-27 23:33:27,409 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 209 transitions, 2110 flow [2024-06-27 23:33:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:27,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:27,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:33:27,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:27,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash 809970964, now seen corresponding path program 1 times [2024-06-27 23:33:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481197239] [2024-06-27 23:33:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:29,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481197239] [2024-06-27 23:33:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481197239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:29,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728583579] [2024-06-27 23:33:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:29,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:29,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 209 transitions, 2110 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:29,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:29,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:29,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:31,536 INFO L124 PetriNetUnfolderBase]: 10391/14468 cut-off events. [2024-06-27 23:33:31,536 INFO L125 PetriNetUnfolderBase]: For 247732/247732 co-relation queries the response was YES. [2024-06-27 23:33:31,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82901 conditions, 14468 events. 10391/14468 cut-off events. For 247732/247732 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 79442 event pairs, 5917 based on Foata normal form. 6/14293 useless extension candidates. Maximal degree in co-relation 82858. Up to 14032 conditions per place. [2024-06-27 23:33:31,649 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 220 selfloop transitions, 23 changer transitions 0/250 dead transitions. [2024-06-27 23:33:31,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 250 transitions, 2806 flow [2024-06-27 23:33:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 23:33:31,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 23:33:31,651 INFO L175 Difference]: Start difference. First operand has 111 places, 209 transitions, 2110 flow. Second operand 8 states and 200 transitions. [2024-06-27 23:33:31,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 250 transitions, 2806 flow [2024-06-27 23:33:31,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 250 transitions, 2546 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 23:33:31,749 INFO L231 Difference]: Finished difference. Result has 114 places, 212 transitions, 1984 flow [2024-06-27 23:33:31,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1984, PETRI_PLACES=114, PETRI_TRANSITIONS=212} [2024-06-27 23:33:31,750 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-27 23:33:31,750 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 212 transitions, 1984 flow [2024-06-27 23:33:31,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:31,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:31,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:33:31,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:31,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash 288035626, now seen corresponding path program 1 times [2024-06-27 23:33:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021312132] [2024-06-27 23:33:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:32,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021312132] [2024-06-27 23:33:32,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021312132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:32,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:32,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:33:32,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339742642] [2024-06-27 23:33:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:32,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:33:32,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:33:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:33:32,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:33:32,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 212 transitions, 1984 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:32,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:33:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:34,682 INFO L124 PetriNetUnfolderBase]: 10384/14453 cut-off events. [2024-06-27 23:33:34,683 INFO L125 PetriNetUnfolderBase]: For 264375/264375 co-relation queries the response was YES. [2024-06-27 23:33:34,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83391 conditions, 14453 events. 10384/14453 cut-off events. For 264375/264375 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 79083 event pairs, 5994 based on Foata normal form. 2/14320 useless extension candidates. Maximal degree in co-relation 83348. Up to 14089 conditions per place. [2024-06-27 23:33:34,805 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 210 selfloop transitions, 12 changer transitions 0/229 dead transitions. [2024-06-27 23:33:34,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 229 transitions, 2530 flow [2024-06-27 23:33:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:33:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:33:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 23:33:34,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 23:33:34,806 INFO L175 Difference]: Start difference. First operand has 114 places, 212 transitions, 1984 flow. Second operand 5 states and 124 transitions. [2024-06-27 23:33:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 229 transitions, 2530 flow [2024-06-27 23:33:34,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 229 transitions, 2422 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 23:33:34,903 INFO L231 Difference]: Finished difference. Result has 113 places, 216 transitions, 1975 flow [2024-06-27 23:33:34,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1975, PETRI_PLACES=113, PETRI_TRANSITIONS=216} [2024-06-27 23:33:34,903 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 23:33:34,903 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 216 transitions, 1975 flow [2024-06-27 23:33:34,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:34,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:34,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:34,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:33:34,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:34,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1446585827, now seen corresponding path program 1 times [2024-06-27 23:33:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:34,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639328794] [2024-06-27 23:33:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:34,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:36,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639328794] [2024-06-27 23:33:36,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639328794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:36,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:36,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:36,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449804674] [2024-06-27 23:33:36,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:36,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:36,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:36,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:36,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 216 transitions, 1975 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:36,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:36,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:36,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:39,127 INFO L124 PetriNetUnfolderBase]: 12120/16816 cut-off events. [2024-06-27 23:33:39,127 INFO L125 PetriNetUnfolderBase]: For 318594/318594 co-relation queries the response was YES. [2024-06-27 23:33:39,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98935 conditions, 16816 events. 12120/16816 cut-off events. For 318594/318594 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91204 event pairs, 5364 based on Foata normal form. 6/16819 useless extension candidates. Maximal degree in co-relation 98890. Up to 16034 conditions per place. [2024-06-27 23:33:39,237 INFO L140 encePairwiseOnDemand]: 35/52 looper letters, 146 selfloop transitions, 114 changer transitions 0/266 dead transitions. [2024-06-27 23:33:39,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 266 transitions, 2755 flow [2024-06-27 23:33:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 23:33:39,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 23:33:39,239 INFO L175 Difference]: Start difference. First operand has 113 places, 216 transitions, 1975 flow. Second operand 9 states and 224 transitions. [2024-06-27 23:33:39,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 266 transitions, 2755 flow [2024-06-27 23:33:39,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 266 transitions, 2688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:39,321 INFO L231 Difference]: Finished difference. Result has 118 places, 221 transitions, 2265 flow [2024-06-27 23:33:39,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2265, PETRI_PLACES=118, PETRI_TRANSITIONS=221} [2024-06-27 23:33:39,322 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-27 23:33:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 221 transitions, 2265 flow [2024-06-27 23:33:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:33:39,322 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:39,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1159698280, now seen corresponding path program 1 times [2024-06-27 23:33:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295961612] [2024-06-27 23:33:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295961612] [2024-06-27 23:33:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295961612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:40,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:40,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481281713] [2024-06-27 23:33:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:40,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:40,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:41,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:41,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 221 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:41,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:41,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:43,496 INFO L124 PetriNetUnfolderBase]: 12173/16888 cut-off events. [2024-06-27 23:33:43,496 INFO L125 PetriNetUnfolderBase]: For 361113/361113 co-relation queries the response was YES. [2024-06-27 23:33:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104811 conditions, 16888 events. 12173/16888 cut-off events. For 361113/361113 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91668 event pairs, 5364 based on Foata normal form. 3/16888 useless extension candidates. Maximal degree in co-relation 104766. Up to 16100 conditions per place. [2024-06-27 23:33:43,639 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 148 selfloop transitions, 123 changer transitions 0/277 dead transitions. [2024-06-27 23:33:43,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 277 transitions, 3295 flow [2024-06-27 23:33:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 23:33:43,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-06-27 23:33:43,649 INFO L175 Difference]: Start difference. First operand has 118 places, 221 transitions, 2265 flow. Second operand 9 states and 226 transitions. [2024-06-27 23:33:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 277 transitions, 3295 flow [2024-06-27 23:33:43,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 277 transitions, 2942 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:43,760 INFO L231 Difference]: Finished difference. Result has 120 places, 229 transitions, 2394 flow [2024-06-27 23:33:43,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2394, PETRI_PLACES=120, PETRI_TRANSITIONS=229} [2024-06-27 23:33:43,760 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 23:33:43,760 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 229 transitions, 2394 flow [2024-06-27 23:33:43,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:43,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:43,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:33:43,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:43,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1159692700, now seen corresponding path program 2 times [2024-06-27 23:33:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12970250] [2024-06-27 23:33:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:46,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:46,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12970250] [2024-06-27 23:33:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12970250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:46,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879475029] [2024-06-27 23:33:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:46,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:46,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:46,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 229 transitions, 2394 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:46,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:46,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:46,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:48,884 INFO L124 PetriNetUnfolderBase]: 12164/16868 cut-off events. [2024-06-27 23:33:48,884 INFO L125 PetriNetUnfolderBase]: For 403854/403854 co-relation queries the response was YES. [2024-06-27 23:33:48,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107957 conditions, 16868 events. 12164/16868 cut-off events. For 403854/403854 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 91455 event pairs, 5364 based on Foata normal form. 3/16868 useless extension candidates. Maximal degree in co-relation 107912. Up to 16091 conditions per place. [2024-06-27 23:33:48,995 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 145 selfloop transitions, 123 changer transitions 0/274 dead transitions. [2024-06-27 23:33:48,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 274 transitions, 3090 flow [2024-06-27 23:33:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 23:33:48,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 23:33:48,997 INFO L175 Difference]: Start difference. First operand has 120 places, 229 transitions, 2394 flow. Second operand 9 states and 224 transitions. [2024-06-27 23:33:48,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 274 transitions, 3090 flow [2024-06-27 23:33:49,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 274 transitions, 2826 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-27 23:33:49,220 INFO L231 Difference]: Finished difference. Result has 124 places, 229 transitions, 2388 flow [2024-06-27 23:33:49,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2388, PETRI_PLACES=124, PETRI_TRANSITIONS=229} [2024-06-27 23:33:49,220 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-27 23:33:49,221 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 229 transitions, 2388 flow [2024-06-27 23:33:49,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:49,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:49,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:49,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:33:49,221 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:49,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1864446824, now seen corresponding path program 3 times [2024-06-27 23:33:49,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:49,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526311903] [2024-06-27 23:33:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:49,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:51,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:51,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526311903] [2024-06-27 23:33:51,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526311903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:51,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:51,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433911637] [2024-06-27 23:33:51,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:51,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:51,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 229 transitions, 2388 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:51,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:51,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:54,461 INFO L124 PetriNetUnfolderBase]: 12253/17011 cut-off events. [2024-06-27 23:33:54,461 INFO L125 PetriNetUnfolderBase]: For 427876/427876 co-relation queries the response was YES. [2024-06-27 23:33:54,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110527 conditions, 17011 events. 12253/17011 cut-off events. For 427876/427876 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92119 event pairs, 5366 based on Foata normal form. 3/17001 useless extension candidates. Maximal degree in co-relation 110480. Up to 16250 conditions per place. [2024-06-27 23:33:54,578 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 167 selfloop transitions, 113 changer transitions 0/286 dead transitions. [2024-06-27 23:33:54,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 286 transitions, 3537 flow [2024-06-27 23:33:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 23:33:54,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-27 23:33:54,580 INFO L175 Difference]: Start difference. First operand has 124 places, 229 transitions, 2388 flow. Second operand 8 states and 205 transitions. [2024-06-27 23:33:54,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 286 transitions, 3537 flow [2024-06-27 23:33:54,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 286 transitions, 3169 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:54,795 INFO L231 Difference]: Finished difference. Result has 125 places, 245 transitions, 2630 flow [2024-06-27 23:33:54,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2630, PETRI_PLACES=125, PETRI_TRANSITIONS=245} [2024-06-27 23:33:54,796 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-27 23:33:54,796 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 245 transitions, 2630 flow [2024-06-27 23:33:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:54,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:54,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:54,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:33:54,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:54,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -904501045, now seen corresponding path program 2 times [2024-06-27 23:33:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965134096] [2024-06-27 23:33:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:56,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965134096] [2024-06-27 23:33:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965134096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:56,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127935921] [2024-06-27 23:33:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:56,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:33:56,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 245 transitions, 2630 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:56,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:56,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:33:56,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:59,149 INFO L124 PetriNetUnfolderBase]: 12293/16997 cut-off events. [2024-06-27 23:33:59,149 INFO L125 PetriNetUnfolderBase]: For 510746/510754 co-relation queries the response was YES. [2024-06-27 23:33:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114446 conditions, 16997 events. 12293/16997 cut-off events. For 510746/510754 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92080 event pairs, 6396 based on Foata normal form. 9/16938 useless extension candidates. Maximal degree in co-relation 114397. Up to 16512 conditions per place. [2024-06-27 23:33:59,315 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 241 selfloop transitions, 45 changer transitions 0/292 dead transitions. [2024-06-27 23:33:59,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 292 transitions, 3467 flow [2024-06-27 23:33:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 23:33:59,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 23:33:59,317 INFO L175 Difference]: Start difference. First operand has 125 places, 245 transitions, 2630 flow. Second operand 8 states and 196 transitions. [2024-06-27 23:33:59,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 292 transitions, 3467 flow [2024-06-27 23:33:59,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 292 transitions, 3267 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:59,786 INFO L231 Difference]: Finished difference. Result has 130 places, 255 transitions, 2697 flow [2024-06-27 23:33:59,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=130, PETRI_TRANSITIONS=255} [2024-06-27 23:33:59,787 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 23:33:59,787 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 255 transitions, 2697 flow [2024-06-27 23:33:59,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:59,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:59,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:33:59,787 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:33:59,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -625610392, now seen corresponding path program 4 times [2024-06-27 23:33:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102134149] [2024-06-27 23:33:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102134149] [2024-06-27 23:34:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102134149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:01,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:01,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254711318] [2024-06-27 23:34:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:01,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:01,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:01,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 255 transitions, 2697 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:01,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:01,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:01,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:04,358 INFO L124 PetriNetUnfolderBase]: 12284/17053 cut-off events. [2024-06-27 23:34:04,358 INFO L125 PetriNetUnfolderBase]: For 516645/516645 co-relation queries the response was YES. [2024-06-27 23:34:04,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118151 conditions, 17053 events. 12284/17053 cut-off events. For 516645/516645 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92339 event pairs, 5366 based on Foata normal form. 3/17043 useless extension candidates. Maximal degree in co-relation 118099. Up to 16295 conditions per place. [2024-06-27 23:34:04,489 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 172 selfloop transitions, 115 changer transitions 0/293 dead transitions. [2024-06-27 23:34:04,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 293 transitions, 3412 flow [2024-06-27 23:34:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 23:34:04,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831730769230769 [2024-06-27 23:34:04,490 INFO L175 Difference]: Start difference. First operand has 130 places, 255 transitions, 2697 flow. Second operand 8 states and 201 transitions. [2024-06-27 23:34:04,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 293 transitions, 3412 flow [2024-06-27 23:34:04,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 293 transitions, 3158 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-06-27 23:34:04,732 INFO L231 Difference]: Finished difference. Result has 133 places, 255 transitions, 2689 flow [2024-06-27 23:34:04,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2689, PETRI_PLACES=133, PETRI_TRANSITIONS=255} [2024-06-27 23:34:04,733 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-27 23:34:04,733 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 255 transitions, 2689 flow [2024-06-27 23:34:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:04,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:04,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:04,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:34:04,733 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:04,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -668129393, now seen corresponding path program 3 times [2024-06-27 23:34:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978779693] [2024-06-27 23:34:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:06,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:06,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978779693] [2024-06-27 23:34:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978779693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:06,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636303431] [2024-06-27 23:34:06,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:06,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:06,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:06,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 255 transitions, 2689 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:06,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:06,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:06,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:09,303 INFO L124 PetriNetUnfolderBase]: 12328/17048 cut-off events. [2024-06-27 23:34:09,303 INFO L125 PetriNetUnfolderBase]: For 580066/580081 co-relation queries the response was YES. [2024-06-27 23:34:09,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119731 conditions, 17048 events. 12328/17048 cut-off events. For 580066/580081 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92541 event pairs, 6402 based on Foata normal form. 13/16988 useless extension candidates. Maximal degree in co-relation 119678. Up to 16466 conditions per place. [2024-06-27 23:34:09,695 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 228 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-27 23:34:09,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 301 transitions, 3553 flow [2024-06-27 23:34:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 23:34:09,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735576923076923 [2024-06-27 23:34:09,697 INFO L175 Difference]: Start difference. First operand has 133 places, 255 transitions, 2689 flow. Second operand 8 states and 197 transitions. [2024-06-27 23:34:09,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 301 transitions, 3553 flow [2024-06-27 23:34:09,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 301 transitions, 3333 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:34:09,980 INFO L231 Difference]: Finished difference. Result has 136 places, 264 transitions, 2785 flow [2024-06-27 23:34:09,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2785, PETRI_PLACES=136, PETRI_TRANSITIONS=264} [2024-06-27 23:34:09,980 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-27 23:34:09,981 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 264 transitions, 2785 flow [2024-06-27 23:34:09,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:09,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:09,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:09,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:34:09,981 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:09,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440072, now seen corresponding path program 5 times [2024-06-27 23:34:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956077749] [2024-06-27 23:34:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956077749] [2024-06-27 23:34:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956077749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286067491] [2024-06-27 23:34:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:11,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:11,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:11,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 264 transitions, 2785 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:14,366 INFO L124 PetriNetUnfolderBase]: 12350/17153 cut-off events. [2024-06-27 23:34:14,366 INFO L125 PetriNetUnfolderBase]: For 591141/591141 co-relation queries the response was YES. [2024-06-27 23:34:14,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123879 conditions, 17153 events. 12350/17153 cut-off events. For 591141/591141 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 92833 event pairs, 5378 based on Foata normal form. 3/17132 useless extension candidates. Maximal degree in co-relation 123824. Up to 16097 conditions per place. [2024-06-27 23:34:14,546 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 125 selfloop transitions, 181 changer transitions 0/312 dead transitions. [2024-06-27 23:34:14,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 312 transitions, 3945 flow [2024-06-27 23:34:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 23:34:14,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-27 23:34:14,548 INFO L175 Difference]: Start difference. First operand has 136 places, 264 transitions, 2785 flow. Second operand 8 states and 204 transitions. [2024-06-27 23:34:14,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 312 transitions, 3945 flow [2024-06-27 23:34:14,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 312 transitions, 3752 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 23:34:14,909 INFO L231 Difference]: Finished difference. Result has 140 places, 272 transitions, 3237 flow [2024-06-27 23:34:14,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3237, PETRI_PLACES=140, PETRI_TRANSITIONS=272} [2024-06-27 23:34:14,910 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-27 23:34:14,910 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 272 transitions, 3237 flow [2024-06-27 23:34:14,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:14,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:14,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:14,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:34:14,911 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:14,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash -660712643, now seen corresponding path program 4 times [2024-06-27 23:34:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172700401] [2024-06-27 23:34:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:17,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:17,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172700401] [2024-06-27 23:34:17,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172700401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:17,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:17,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:17,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575566385] [2024-06-27 23:34:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:17,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:17,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 272 transitions, 3237 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:17,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:17,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:17,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:20,014 INFO L124 PetriNetUnfolderBase]: 12403/17225 cut-off events. [2024-06-27 23:34:20,014 INFO L125 PetriNetUnfolderBase]: For 649802/649802 co-relation queries the response was YES. [2024-06-27 23:34:20,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128902 conditions, 17225 events. 12403/17225 cut-off events. For 649802/649802 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93147 event pairs, 5378 based on Foata normal form. 3/17204 useless extension candidates. Maximal degree in co-relation 128847. Up to 16182 conditions per place. [2024-06-27 23:34:20,167 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 145 selfloop transitions, 170 changer transitions 0/321 dead transitions. [2024-06-27 23:34:20,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 321 transitions, 4421 flow [2024-06-27 23:34:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 23:34:20,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 23:34:20,169 INFO L175 Difference]: Start difference. First operand has 140 places, 272 transitions, 3237 flow. Second operand 9 states and 218 transitions. [2024-06-27 23:34:20,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 321 transitions, 4421 flow [2024-06-27 23:34:20,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 321 transitions, 4140 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-27 23:34:20,889 INFO L231 Difference]: Finished difference. Result has 146 places, 281 transitions, 3620 flow [2024-06-27 23:34:20,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3620, PETRI_PLACES=146, PETRI_TRANSITIONS=281} [2024-06-27 23:34:20,891 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 91 predicate places. [2024-06-27 23:34:20,891 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 281 transitions, 3620 flow [2024-06-27 23:34:20,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:20,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:20,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:20,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:34:20,892 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:20,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -668331420, now seen corresponding path program 6 times [2024-06-27 23:34:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552297956] [2024-06-27 23:34:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552297956] [2024-06-27 23:34:22,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552297956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:22,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:22,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922950135] [2024-06-27 23:34:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:22,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:22,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 281 transitions, 3620 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:22,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:22,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:22,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:25,876 INFO L124 PetriNetUnfolderBase]: 12425/17255 cut-off events. [2024-06-27 23:34:25,876 INFO L125 PetriNetUnfolderBase]: For 651630/651630 co-relation queries the response was YES. [2024-06-27 23:34:25,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129540 conditions, 17255 events. 12425/17255 cut-off events. For 651630/651630 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93357 event pairs, 5378 based on Foata normal form. 3/17234 useless extension candidates. Maximal degree in co-relation 129482. Up to 16192 conditions per place. [2024-06-27 23:34:26,030 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 143 selfloop transitions, 176 changer transitions 0/325 dead transitions. [2024-06-27 23:34:26,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 325 transitions, 4694 flow [2024-06-27 23:34:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 23:34:26,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-27 23:34:26,032 INFO L175 Difference]: Start difference. First operand has 146 places, 281 transitions, 3620 flow. Second operand 8 states and 206 transitions. [2024-06-27 23:34:26,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 325 transitions, 4694 flow [2024-06-27 23:34:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 325 transitions, 4480 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-27 23:34:26,627 INFO L231 Difference]: Finished difference. Result has 150 places, 285 transitions, 3909 flow [2024-06-27 23:34:26,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3909, PETRI_PLACES=150, PETRI_TRANSITIONS=285} [2024-06-27 23:34:26,628 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-06-27 23:34:26,628 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 285 transitions, 3909 flow [2024-06-27 23:34:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:26,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:26,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:34:26,628 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:26,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -668331203, now seen corresponding path program 5 times [2024-06-27 23:34:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052724061] [2024-06-27 23:34:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:28,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052724061] [2024-06-27 23:34:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052724061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:28,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:28,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:28,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913320853] [2024-06-27 23:34:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:28,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:28,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:28,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 285 transitions, 3909 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:28,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:31,612 INFO L124 PetriNetUnfolderBase]: 12416/17128 cut-off events. [2024-06-27 23:34:31,612 INFO L125 PetriNetUnfolderBase]: For 724377/724392 co-relation queries the response was YES. [2024-06-27 23:34:31,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131011 conditions, 17128 events. 12416/17128 cut-off events. For 724377/724392 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 92494 event pairs, 6402 based on Foata normal form. 13/17090 useless extension candidates. Maximal degree in co-relation 130951. Up to 16586 conditions per place. [2024-06-27 23:34:31,774 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 255 selfloop transitions, 64 changer transitions 0/325 dead transitions. [2024-06-27 23:34:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 325 transitions, 4784 flow [2024-06-27 23:34:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 23:34:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596153846153844 [2024-06-27 23:34:31,776 INFO L175 Difference]: Start difference. First operand has 150 places, 285 transitions, 3909 flow. Second operand 8 states and 198 transitions. [2024-06-27 23:34:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 325 transitions, 4784 flow [2024-06-27 23:34:32,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 325 transitions, 4123 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-27 23:34:32,354 INFO L231 Difference]: Finished difference. Result has 151 places, 288 transitions, 3494 flow [2024-06-27 23:34:32,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3494, PETRI_PLACES=151, PETRI_TRANSITIONS=288} [2024-06-27 23:34:32,355 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-27 23:34:32,355 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 288 transitions, 3494 flow [2024-06-27 23:34:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:32,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:32,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:32,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:34:32,356 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:32,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -668337000, now seen corresponding path program 7 times [2024-06-27 23:34:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573440418] [2024-06-27 23:34:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573440418] [2024-06-27 23:34:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573440418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:34,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:34,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21172828] [2024-06-27 23:34:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:34,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:34,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 288 transitions, 3494 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:34,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:34,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:34,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:38,042 INFO L124 PetriNetUnfolderBase]: 12407/17231 cut-off events. [2024-06-27 23:34:38,042 INFO L125 PetriNetUnfolderBase]: For 705619/705619 co-relation queries the response was YES. [2024-06-27 23:34:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130771 conditions, 17231 events. 12407/17231 cut-off events. For 705619/705619 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93175 event pairs, 5378 based on Foata normal form. 3/17210 useless extension candidates. Maximal degree in co-relation 130711. Up to 16171 conditions per place. [2024-06-27 23:34:38,194 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 142 selfloop transitions, 177 changer transitions 0/325 dead transitions. [2024-06-27 23:34:38,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 325 transitions, 4268 flow [2024-06-27 23:34:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 23:34:38,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45726495726495725 [2024-06-27 23:34:38,196 INFO L175 Difference]: Start difference. First operand has 151 places, 288 transitions, 3494 flow. Second operand 9 states and 214 transitions. [2024-06-27 23:34:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 325 transitions, 4268 flow [2024-06-27 23:34:38,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 325 transitions, 3935 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-27 23:34:38,723 INFO L231 Difference]: Finished difference. Result has 154 places, 288 transitions, 3526 flow [2024-06-27 23:34:38,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3526, PETRI_PLACES=154, PETRI_TRANSITIONS=288} [2024-06-27 23:34:38,724 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-27 23:34:38,724 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 288 transitions, 3526 flow [2024-06-27 23:34:38,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:38,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:38,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:38,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:34:38,725 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:38,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 339170896, now seen corresponding path program 1 times [2024-06-27 23:34:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235618932] [2024-06-27 23:34:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:40,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235618932] [2024-06-27 23:34:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235618932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:34:40,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887423554] [2024-06-27 23:34:40,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:40,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:34:40,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:34:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:34:40,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 23:34:40,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 288 transitions, 3526 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:40,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:40,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 23:34:40,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand