./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/rfi000_power.opt_pso.opt_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi000_power.opt_pso.opt_rmo.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:05:13,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:05:13,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:05:13,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:05:13,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:05:13,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:05:13,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:05:13,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:05:13,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:05:13,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:05:13,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:05:13,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:05:13,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:05:13,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:05:13,121 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:05:13,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:05:13,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:05:13,122 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:05:13,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:05:13,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:05:13,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:05:13,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:05:13,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:05:13,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:05:13,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:05:13,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:05:13,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:05:13,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:05:13,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:05:13,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:05:13,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:05:13,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:05:13,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:05:13,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:05:13,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:05:13,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:05:13,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:05:13,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:05:13,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:05:13,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:05:13,143 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:05:13,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:05:13,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:05:13,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:05:13,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:05:13,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:05:13,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:05:13,360 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:05:13,360 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:05:13,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-05-12 12:05:13,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:05:13,505 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:05:13,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-05-12 12:05:14,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:05:14,848 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:05:14,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-05-12 12:05:14,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d73613c8/2a80023af0f54d7ca90b3055d1eafd6f/FLAG0c3813f55 [2024-05-12 12:05:14,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d73613c8/2a80023af0f54d7ca90b3055d1eafd6f [2024-05-12 12:05:14,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:05:14,887 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:05:14,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:05:14,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:05:14,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:05:14,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:13" (1/2) ... [2024-05-12 12:05:14,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a770198 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:05:14, skipping insertion in model container [2024-05-12 12:05:14,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:13" (1/2) ... [2024-05-12 12:05:14,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f1b92bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:05:14, skipping insertion in model container [2024-05-12 12:05:14,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:05:14" (2/2) ... [2024-05-12 12:05:14,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a770198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:14, skipping insertion in model container [2024-05-12 12:05:14,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:05:14" (2/2) ... [2024-05-12 12:05:14,895 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:05:14,956 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:05:14,957 INFO L97 edCorrectnessWitness]: Location invariant before [L804-L804] (((((((((((((((! multithreaded || (((0 <= x$w_buff1 && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$w_buff0 && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )y >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )x$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )x$flush_delayed >= 0LL) && (long long )x + (long long )x$mem_tmp >= 0LL) && (long long )x + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x + (long long )x$read_delayed >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff1 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x$flush_delayed + (long long )x$mem_tmp >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$flush_delayed + (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$flush_delayed + (long long )y >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$mem_tmp + (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff1 >= 0LL) && (long long )x$mem_tmp + (long long )y >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )y >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )y >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )y >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )y >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$read_delayed + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff1 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (2LL + (long long )x) - (long long )y >= 0LL) && (2LL + (long long )x$flush_delayed) - (long long )y >= 0LL) && (2LL + (long long )x$mem_tmp) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd2) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd2) - (long long )y >= 0LL) && (2LL + (long long )x$read_delayed) - (long long )y >= 0LL) && (2LL + (long long )x$w_buff0) - (long long )y >= 0LL) && (2LL + (long long )x$w_buff1) - (long long )y >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (2LL - (long long )x$read_delayed) - (long long )y >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$read_delayed >= 0LL) && (long long )x - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x - (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$read_delayed >= 0LL))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= x$mem_tmp) && 0 <= x$w_buff0) && 0 <= x$w_buff1) && 0 <= y) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x$w_buff0 <= 127) && x$w_buff1 <= 127) && y <= 2) && y <= 127) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 % 2 == 0) && x$w_buff1 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (0 <= x && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (0 <= x$mem_tmp && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 12:05:14,957 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] (((((((((((((((! multithreaded || (((0 <= x$w_buff1 && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (((0 <= x$w_buff0 && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )y >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$r_buff1_thd2 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )y >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )x$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )x$flush_delayed >= 0LL) && (long long )x + (long long )x$mem_tmp >= 0LL) && (long long )x + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x + (long long )x$read_delayed >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff1 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x$flush_delayed + (long long )x$mem_tmp >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$flush_delayed + (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$flush_delayed + (long long )y >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$mem_tmp + (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff1 >= 0LL) && (long long )x$mem_tmp + (long long )y >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )y >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )y >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )y >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )y >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$read_delayed + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff1 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (2LL + (long long )x) - (long long )y >= 0LL) && (2LL + (long long )x$flush_delayed) - (long long )y >= 0LL) && (2LL + (long long )x$mem_tmp) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff0_thd2) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (2LL + (long long )x$r_buff1_thd2) - (long long )y >= 0LL) && (2LL + (long long )x$read_delayed) - (long long )y >= 0LL) && (2LL + (long long )x$w_buff0) - (long long )y >= 0LL) && (2LL + (long long )x$w_buff1) - (long long )y >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (2LL - (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (2LL - (long long )x$read_delayed) - (long long )y >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$read_delayed >= 0LL) && (long long )x - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x - (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$read_delayed >= 0LL))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= x$mem_tmp) && 0 <= x$w_buff0) && 0 <= x$w_buff1) && 0 <= y) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x$w_buff0 <= 127) && x$w_buff1 <= 127) && y <= 2) && y <= 127) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 % 2 == 0) && x$w_buff1 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (0 <= x && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (0 <= x$mem_tmp && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 12:05:14,958 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:05:14,958 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-05-12 12:05:15,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:05:15,160 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2024-05-12 12:05:15,324 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:05:15,335 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:05:15,397 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:05:15,660 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:05:15,702 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:05:15,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15 WrapperNode [2024-05-12 12:05:15,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:05:15,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:05:15,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:05:15,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:05:15,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,798 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-05-12 12:05:15,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:05:15,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:05:15,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:05:15,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:05:15,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,867 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 12:05:15,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:05:15,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:05:15,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:05:15,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:05:15,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (1/1) ... [2024-05-12 12:05:15,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:05:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:05:15,974 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) [2024-05-12 12:05:15,982 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 [2024-05-12 12:05:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:05:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:05:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 12:05:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 12:05:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 12:05:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 12:05:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:05:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:05:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:05:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:05:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:05:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:05:16,023 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:05:16,147 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:05:16,150 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:05:16,764 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:05:16,764 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:05:16,912 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:05:16,912 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:05:16,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:05:16 BoogieIcfgContainer [2024-05-12 12:05:16,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:05:16,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:05:16,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:05:16,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:05:16,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:13" (1/4) ... [2024-05-12 12:05:16,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af1b400 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:05:16, skipping insertion in model container [2024-05-12 12:05:16,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:05:14" (2/4) ... [2024-05-12 12:05:16,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af1b400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:05:16, skipping insertion in model container [2024-05-12 12:05:16,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:15" (3/4) ... [2024-05-12 12:05:16,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af1b400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:05:16, skipping insertion in model container [2024-05-12 12:05:16,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:05:16" (4/4) ... [2024-05-12 12:05:16,926 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2024-05-12 12:05:16,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:05:16,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:05:16,940 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:05:17,002 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:05:17,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 12:05:17,076 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-05-12 12:05:17,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:05:17,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-05-12 12:05:17,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 12:05:17,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-05-12 12:05:17,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:05:17,106 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;@53ee1039, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:05:17,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 12:05:17,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:05:17,113 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:05:17,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:05:17,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:17,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:05:17,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:17,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1189485975, now seen corresponding path program 1 times [2024-05-12 12:05:17,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:17,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835238742] [2024-05-12 12:05:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:20,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835238742] [2024-05-12 12:05:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835238742] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:20,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:20,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:05:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507230752] [2024-05-12 12:05:20,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:20,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:05:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:05:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:05:20,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-05-12 12:05:20,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:20,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:20,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-05-12 12:05:20,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:20,780 INFO L124 PetriNetUnfolderBase]: 543/995 cut-off events. [2024-05-12 12:05:20,780 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-05-12 12:05:20,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 995 events. 543/995 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5156 event pairs, 234 based on Foata normal form. 43/976 useless extension candidates. Maximal degree in co-relation 1903. Up to 892 conditions per place. [2024-05-12 12:05:20,790 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-05-12 12:05:20,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 179 flow [2024-05-12 12:05:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:05:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:05:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-05-12 12:05:20,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-05-12 12:05:20,802 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 75 transitions. [2024-05-12 12:05:20,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 179 flow [2024-05-12 12:05:20,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:20,808 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-05-12 12:05:20,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-05-12 12:05:20,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 12:05:20,813 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-05-12 12:05:20,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:20,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:20,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:05:20,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:20,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 634737718, now seen corresponding path program 1 times [2024-05-12 12:05:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:20,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799596177] [2024-05-12 12:05:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:22,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:22,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799596177] [2024-05-12 12:05:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799596177] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:22,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:22,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:05:22,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770493439] [2024-05-12 12:05:22,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:22,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:05:22,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:22,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:05:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:05:23,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:23,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:23,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:23,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:23,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:23,294 INFO L124 PetriNetUnfolderBase]: 703/1321 cut-off events. [2024-05-12 12:05:23,295 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-05-12 12:05:23,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1321 events. 703/1321 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7125 event pairs, 477 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 2729. Up to 1127 conditions per place. [2024-05-12 12:05:23,300 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 45 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-05-12 12:05:23,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 256 flow [2024-05-12 12:05:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:05:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:05:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-05-12 12:05:23,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-05-12 12:05:23,302 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 90 transitions. [2024-05-12 12:05:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 256 flow [2024-05-12 12:05:23,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:23,304 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-05-12 12:05:23,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-05-12 12:05:23,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-05-12 12:05:23,305 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-05-12 12:05:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:23,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:23,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:23,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:05:23,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1797966646, now seen corresponding path program 1 times [2024-05-12 12:05:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445179536] [2024-05-12 12:05:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:25,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445179536] [2024-05-12 12:05:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445179536] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:25,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:05:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499975344] [2024-05-12 12:05:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:25,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:05:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:05:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:05:25,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:25,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:25,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:25,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:25,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:25,802 INFO L124 PetriNetUnfolderBase]: 695/1294 cut-off events. [2024-05-12 12:05:25,802 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-05-12 12:05:25,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 1294 events. 695/1294 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7067 event pairs, 241 based on Foata normal form. 4/1204 useless extension candidates. Maximal degree in co-relation 2906. Up to 1098 conditions per place. [2024-05-12 12:05:25,809 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 52 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-05-12 12:05:25,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2024-05-12 12:05:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:05:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:05:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-05-12 12:05:25,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-05-12 12:05:25,814 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 5 states and 106 transitions. [2024-05-12 12:05:25,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2024-05-12 12:05:25,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 342 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:25,818 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 233 flow [2024-05-12 12:05:25,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-05-12 12:05:25,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-05-12 12:05:25,820 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 233 flow [2024-05-12 12:05:25,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:25,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:25,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:25,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:05:25,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1798128917, now seen corresponding path program 1 times [2024-05-12 12:05:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777627137] [2024-05-12 12:05:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:25,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777627137] [2024-05-12 12:05:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777627137] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:05:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885719257] [2024-05-12 12:05:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:25,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:05:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:05:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:05:25,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-05-12 12:05:25,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:25,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:25,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-05-12 12:05:25,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:26,078 INFO L124 PetriNetUnfolderBase]: 191/560 cut-off events. [2024-05-12 12:05:26,078 INFO L125 PetriNetUnfolderBase]: For 284/310 co-relation queries the response was YES. [2024-05-12 12:05:26,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 560 events. 191/560 cut-off events. For 284/310 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3548 event pairs, 48 based on Foata normal form. 10/533 useless extension candidates. Maximal degree in co-relation 1125. Up to 286 conditions per place. [2024-05-12 12:05:26,082 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-05-12 12:05:26,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 276 flow [2024-05-12 12:05:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:05:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:05:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-05-12 12:05:26,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-05-12 12:05:26,083 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 233 flow. Second operand 3 states and 81 transitions. [2024-05-12 12:05:26,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 276 flow [2024-05-12 12:05:26,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 12:05:26,087 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 200 flow [2024-05-12 12:05:26,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-05-12 12:05:26,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-05-12 12:05:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 200 flow [2024-05-12 12:05:26,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:26,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:26,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:05:26,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:26,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 503285765, now seen corresponding path program 1 times [2024-05-12 12:05:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:26,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834562661] [2024-05-12 12:05:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:26,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834562661] [2024-05-12 12:05:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834562661] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:29,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:29,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181008379] [2024-05-12 12:05:29,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:29,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:29,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:29,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:29,417 INFO L124 PetriNetUnfolderBase]: 613/1142 cut-off events. [2024-05-12 12:05:29,417 INFO L125 PetriNetUnfolderBase]: For 780/780 co-relation queries the response was YES. [2024-05-12 12:05:29,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1142 events. 613/1142 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5956 event pairs, 144 based on Foata normal form. 4/1103 useless extension candidates. Maximal degree in co-relation 2739. Up to 938 conditions per place. [2024-05-12 12:05:29,423 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 51 selfloop transitions, 12 changer transitions 1/71 dead transitions. [2024-05-12 12:05:29,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 386 flow [2024-05-12 12:05:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-05-12 12:05:29,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 12:05:29,427 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 200 flow. Second operand 6 states and 116 transitions. [2024-05-12 12:05:29,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 386 flow [2024-05-12 12:05:29,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:29,434 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 221 flow [2024-05-12 12:05:29,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-05-12 12:05:29,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-05-12 12:05:29,436 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 221 flow [2024-05-12 12:05:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:29,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:29,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:05:29,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:29,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1425325166, now seen corresponding path program 1 times [2024-05-12 12:05:29,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:29,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174802390] [2024-05-12 12:05:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174802390] [2024-05-12 12:05:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174802390] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:33,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:33,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:05:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953917123] [2024-05-12 12:05:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:05:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:05:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:05:33,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 12:05:33,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:33,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:33,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 12:05:33,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:33,500 INFO L124 PetriNetUnfolderBase]: 452/898 cut-off events. [2024-05-12 12:05:33,500 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-05-12 12:05:33,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 898 events. 452/898 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4714 event pairs, 186 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 2245. Up to 738 conditions per place. [2024-05-12 12:05:33,504 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-05-12 12:05:33,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 392 flow [2024-05-12 12:05:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:05:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:05:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-05-12 12:05:33,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 12:05:33,506 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 221 flow. Second operand 5 states and 92 transitions. [2024-05-12 12:05:33,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 392 flow [2024-05-12 12:05:33,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 359 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 12:05:33,509 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 250 flow [2024-05-12 12:05:33,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-05-12 12:05:33,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-05-12 12:05:33,511 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 250 flow [2024-05-12 12:05:33,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:33,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:33,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:33,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:05:33,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:33,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1235405823, now seen corresponding path program 1 times [2024-05-12 12:05:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290607429] [2024-05-12 12:05:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290607429] [2024-05-12 12:05:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290607429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775709233] [2024-05-12 12:05:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:37,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:37,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:37,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:37,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:37,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:37,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:37,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:37,881 INFO L124 PetriNetUnfolderBase]: 643/1182 cut-off events. [2024-05-12 12:05:37,881 INFO L125 PetriNetUnfolderBase]: For 1287/1296 co-relation queries the response was YES. [2024-05-12 12:05:37,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 1182 events. 643/1182 cut-off events. For 1287/1296 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6062 event pairs, 244 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 3129. Up to 969 conditions per place. [2024-05-12 12:05:37,887 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 60 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-05-12 12:05:37,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 501 flow [2024-05-12 12:05:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-05-12 12:05:37,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:05:37,889 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 250 flow. Second operand 6 states and 105 transitions. [2024-05-12 12:05:37,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 501 flow [2024-05-12 12:05:37,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 492 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:37,892 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 344 flow [2024-05-12 12:05:37,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-05-12 12:05:37,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-05-12 12:05:37,894 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 344 flow [2024-05-12 12:05:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:37,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:37,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:37,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:05:37,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:37,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1109160399, now seen corresponding path program 1 times [2024-05-12 12:05:37,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347532562] [2024-05-12 12:05:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347532562] [2024-05-12 12:05:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347532562] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:41,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600558194] [2024-05-12 12:05:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:41,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:41,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:41,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:41,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:41,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:42,218 INFO L124 PetriNetUnfolderBase]: 665/1231 cut-off events. [2024-05-12 12:05:42,218 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-05-12 12:05:42,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1231 events. 665/1231 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6324 event pairs, 271 based on Foata normal form. 1/1187 useless extension candidates. Maximal degree in co-relation 3708. Up to 1058 conditions per place. [2024-05-12 12:05:42,226 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 67 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-05-12 12:05:42,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 610 flow [2024-05-12 12:05:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-05-12 12:05:42,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2024-05-12 12:05:42,228 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 344 flow. Second operand 7 states and 116 transitions. [2024-05-12 12:05:42,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 610 flow [2024-05-12 12:05:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 88 transitions, 602 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:42,233 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 433 flow [2024-05-12 12:05:42,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-05-12 12:05:42,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-05-12 12:05:42,234 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 433 flow [2024-05-12 12:05:42,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:42,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:42,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:42,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:05:42,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:42,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash 351373937, now seen corresponding path program 2 times [2024-05-12 12:05:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:42,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512282391] [2024-05-12 12:05:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512282391] [2024-05-12 12:05:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512282391] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100788562] [2024-05-12 12:05:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:46,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:46,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:46,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:46,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:46,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:46,490 INFO L124 PetriNetUnfolderBase]: 678/1254 cut-off events. [2024-05-12 12:05:46,490 INFO L125 PetriNetUnfolderBase]: For 2666/2666 co-relation queries the response was YES. [2024-05-12 12:05:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 1254 events. 678/1254 cut-off events. For 2666/2666 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6478 event pairs, 270 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 3987. Up to 1068 conditions per place. [2024-05-12 12:05:46,497 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 66 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-05-12 12:05:46,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 668 flow [2024-05-12 12:05:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-05-12 12:05:46,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-05-12 12:05:46,499 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 433 flow. Second operand 6 states and 101 transitions. [2024-05-12 12:05:46,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 668 flow [2024-05-12 12:05:46,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 635 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 12:05:46,505 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 461 flow [2024-05-12 12:05:46,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=461, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-05-12 12:05:46,506 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-05-12 12:05:46,506 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 461 flow [2024-05-12 12:05:46,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:46,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:46,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:46,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:05:46,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:46,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 357117617, now seen corresponding path program 3 times [2024-05-12 12:05:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537186490] [2024-05-12 12:05:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537186490] [2024-05-12 12:05:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537186490] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:50,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:50,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:50,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690852625] [2024-05-12 12:05:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:50,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:50,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:50,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:50,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 461 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:50,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:50,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:50,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:50,539 INFO L124 PetriNetUnfolderBase]: 673/1235 cut-off events. [2024-05-12 12:05:50,539 INFO L125 PetriNetUnfolderBase]: For 3077/3089 co-relation queries the response was YES. [2024-05-12 12:05:50,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1235 events. 673/1235 cut-off events. For 3077/3089 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6321 event pairs, 249 based on Foata normal form. 10/1201 useless extension candidates. Maximal degree in co-relation 4024. Up to 984 conditions per place. [2024-05-12 12:05:50,547 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 63 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2024-05-12 12:05:50,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 687 flow [2024-05-12 12:05:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-05-12 12:05:50,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 12:05:50,548 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 461 flow. Second operand 6 states and 104 transitions. [2024-05-12 12:05:50,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 687 flow [2024-05-12 12:05:50,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 651 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 12:05:50,553 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 470 flow [2024-05-12 12:05:50,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-05-12 12:05:50,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-05-12 12:05:50,553 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 470 flow [2024-05-12 12:05:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:50,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:50,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:50,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:05:50,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:50,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 357126545, now seen corresponding path program 1 times [2024-05-12 12:05:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875818806] [2024-05-12 12:05:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:54,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875818806] [2024-05-12 12:05:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875818806] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:54,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:05:54,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551436539] [2024-05-12 12:05:54,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:54,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:05:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:05:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:05:54,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:54,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 470 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:54,760 INFO L124 PetriNetUnfolderBase]: 694/1265 cut-off events. [2024-05-12 12:05:54,760 INFO L125 PetriNetUnfolderBase]: For 3072/3084 co-relation queries the response was YES. [2024-05-12 12:05:54,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 1265 events. 694/1265 cut-off events. For 3072/3084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6502 event pairs, 250 based on Foata normal form. 10/1232 useless extension candidates. Maximal degree in co-relation 4143. Up to 970 conditions per place. [2024-05-12 12:05:54,767 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 69 selfloop transitions, 25 changer transitions 0/100 dead transitions. [2024-05-12 12:05:54,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 784 flow [2024-05-12 12:05:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 12:05:54,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-05-12 12:05:54,768 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 470 flow. Second operand 7 states and 123 transitions. [2024-05-12 12:05:54,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 784 flow [2024-05-12 12:05:54,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 733 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:05:54,773 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 505 flow [2024-05-12 12:05:54,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-05-12 12:05:54,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-05-12 12:05:54,774 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 505 flow [2024-05-12 12:05:54,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:54,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:54,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:05:54,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:54,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1649980965, now seen corresponding path program 1 times [2024-05-12 12:05:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:54,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292575349] [2024-05-12 12:05:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:58,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292575349] [2024-05-12 12:05:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292575349] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:58,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:58,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:05:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288320912] [2024-05-12 12:05:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:05:58,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:05:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:05:58,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:58,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:58,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:58,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:58,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:59,384 INFO L124 PetriNetUnfolderBase]: 716/1315 cut-off events. [2024-05-12 12:05:59,385 INFO L125 PetriNetUnfolderBase]: For 3599/3599 co-relation queries the response was YES. [2024-05-12 12:05:59,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 1315 events. 716/1315 cut-off events. For 3599/3599 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6835 event pairs, 211 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 4468. Up to 1088 conditions per place. [2024-05-12 12:05:59,393 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 77 selfloop transitions, 24 changer transitions 0/107 dead transitions. [2024-05-12 12:05:59,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 819 flow [2024-05-12 12:05:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 12:05:59,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-05-12 12:05:59,395 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 505 flow. Second operand 7 states and 123 transitions. [2024-05-12 12:05:59,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 819 flow [2024-05-12 12:05:59,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 791 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 12:05:59,401 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 582 flow [2024-05-12 12:05:59,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-05-12 12:05:59,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-05-12 12:05:59,402 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 582 flow [2024-05-12 12:05:59,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:59,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:59,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:59,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:05:59,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:59,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1800348675, now seen corresponding path program 2 times [2024-05-12 12:05:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122811720] [2024-05-12 12:05:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:03,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122811720] [2024-05-12 12:06:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122811720] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:03,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512902525] [2024-05-12 12:06:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:03,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 582 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:04,071 INFO L124 PetriNetUnfolderBase]: 752/1360 cut-off events. [2024-05-12 12:06:04,071 INFO L125 PetriNetUnfolderBase]: For 4621/4621 co-relation queries the response was YES. [2024-05-12 12:06:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5082 conditions, 1360 events. 752/1360 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7044 event pairs, 203 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 5043. Up to 1089 conditions per place. [2024-05-12 12:06:04,079 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 82 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2024-05-12 12:06:04,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 118 transitions, 1008 flow [2024-05-12 12:06:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 12:06:04,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-05-12 12:06:04,081 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 582 flow. Second operand 7 states and 123 transitions. [2024-05-12 12:06:04,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 118 transitions, 1008 flow [2024-05-12 12:06:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 118 transitions, 971 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:04,087 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 737 flow [2024-05-12 12:06:04,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=737, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2024-05-12 12:06:04,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2024-05-12 12:06:04,088 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 737 flow [2024-05-12 12:06:04,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:04,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:04,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:06:04,089 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:04,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1814254615, now seen corresponding path program 3 times [2024-05-12 12:06:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:04,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859436338] [2024-05-12 12:06:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859436338] [2024-05-12 12:06:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859436338] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859405754] [2024-05-12 12:06:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:08,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:08,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 737 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:08,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:08,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:08,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:08,945 INFO L124 PetriNetUnfolderBase]: 770/1430 cut-off events. [2024-05-12 12:06:08,945 INFO L125 PetriNetUnfolderBase]: For 6152/6155 co-relation queries the response was YES. [2024-05-12 12:06:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1430 events. 770/1430 cut-off events. For 6152/6155 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7622 event pairs, 168 based on Foata normal form. 4/1374 useless extension candidates. Maximal degree in co-relation 5507. Up to 959 conditions per place. [2024-05-12 12:06:08,964 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-05-12 12:06:08,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 1286 flow [2024-05-12 12:06:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 12:06:08,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699248120300752 [2024-05-12 12:06:08,966 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 737 flow. Second operand 7 states and 125 transitions. [2024-05-12 12:06:08,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 1286 flow [2024-05-12 12:06:08,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 1228 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-05-12 12:06:08,977 INFO L231 Difference]: Finished difference. Result has 90 places, 111 transitions, 963 flow [2024-05-12 12:06:08,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=963, PETRI_PLACES=90, PETRI_TRANSITIONS=111} [2024-05-12 12:06:08,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-05-12 12:06:08,978 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 963 flow [2024-05-12 12:06:08,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:08,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:08,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:06:08,979 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:08,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1813977568, now seen corresponding path program 1 times [2024-05-12 12:06:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744228924] [2024-05-12 12:06:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744228924] [2024-05-12 12:06:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744228924] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:12,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:12,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:06:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338841610] [2024-05-12 12:06:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:12,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:06:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:06:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:06:12,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:12,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 963 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:12,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:12,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:12,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:13,335 INFO L124 PetriNetUnfolderBase]: 791/1451 cut-off events. [2024-05-12 12:06:13,336 INFO L125 PetriNetUnfolderBase]: For 7522/7537 co-relation queries the response was YES. [2024-05-12 12:06:13,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6119 conditions, 1451 events. 791/1451 cut-off events. For 7522/7537 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7785 event pairs, 177 based on Foata normal form. 12/1407 useless extension candidates. Maximal degree in co-relation 6075. Up to 1069 conditions per place. [2024-05-12 12:06:13,343 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 107 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-05-12 12:06:13,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 150 transitions, 1482 flow [2024-05-12 12:06:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 12:06:13,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-05-12 12:06:13,345 INFO L175 Difference]: Start difference. First operand has 90 places, 111 transitions, 963 flow. Second operand 8 states and 141 transitions. [2024-05-12 12:06:13,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 150 transitions, 1482 flow [2024-05-12 12:06:13,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 150 transitions, 1423 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-05-12 12:06:13,360 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 1036 flow [2024-05-12 12:06:13,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1036, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-05-12 12:06:13,361 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-05-12 12:06:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 1036 flow [2024-05-12 12:06:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:13,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:13,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:06:13,362 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:13,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash -390287600, now seen corresponding path program 1 times [2024-05-12 12:06:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509974529] [2024-05-12 12:06:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:13,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509974529] [2024-05-12 12:06:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509974529] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:17,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:17,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:06:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032594555] [2024-05-12 12:06:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:06:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:06:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:06:17,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 1036 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:18,136 INFO L124 PetriNetUnfolderBase]: 793/1459 cut-off events. [2024-05-12 12:06:18,136 INFO L125 PetriNetUnfolderBase]: For 8039/8039 co-relation queries the response was YES. [2024-05-12 12:06:18,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6385 conditions, 1459 events. 793/1459 cut-off events. For 8039/8039 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7778 event pairs, 201 based on Foata normal form. 1/1404 useless extension candidates. Maximal degree in co-relation 6339. Up to 1196 conditions per place. [2024-05-12 12:06:18,147 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 110 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-05-12 12:06:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 146 transitions, 1458 flow [2024-05-12 12:06:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-05-12 12:06:18,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-05-12 12:06:18,149 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 1036 flow. Second operand 7 states and 124 transitions. [2024-05-12 12:06:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 146 transitions, 1458 flow [2024-05-12 12:06:18,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1396 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-05-12 12:06:18,166 INFO L231 Difference]: Finished difference. Result has 100 places, 123 transitions, 1130 flow [2024-05-12 12:06:18,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1130, PETRI_PLACES=100, PETRI_TRANSITIONS=123} [2024-05-12 12:06:18,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-05-12 12:06:18,167 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 123 transitions, 1130 flow [2024-05-12 12:06:18,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:18,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:18,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:18,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:06:18,168 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:18,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1635773938, now seen corresponding path program 1 times [2024-05-12 12:06:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103104524] [2024-05-12 12:06:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103104524] [2024-05-12 12:06:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103104524] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386946164] [2024-05-12 12:06:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:22,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:22,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 123 transitions, 1130 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:22,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:22,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:22,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:22,830 INFO L124 PetriNetUnfolderBase]: 813/1489 cut-off events. [2024-05-12 12:06:22,830 INFO L125 PetriNetUnfolderBase]: For 8768/8768 co-relation queries the response was YES. [2024-05-12 12:06:22,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 1489 events. 813/1489 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7909 event pairs, 200 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 6587. Up to 1212 conditions per place. [2024-05-12 12:06:22,855 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 119 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-05-12 12:06:22,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 155 transitions, 1559 flow [2024-05-12 12:06:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:06:22,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:06:22,861 INFO L175 Difference]: Start difference. First operand has 100 places, 123 transitions, 1130 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:06:22,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 155 transitions, 1559 flow [2024-05-12 12:06:22,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 1525 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:22,878 INFO L231 Difference]: Finished difference. Result has 105 places, 126 transitions, 1197 flow [2024-05-12 12:06:22,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1197, PETRI_PLACES=105, PETRI_TRANSITIONS=126} [2024-05-12 12:06:22,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-05-12 12:06:22,879 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 126 transitions, 1197 flow [2024-05-12 12:06:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:22,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:22,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:06:22,880 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:22,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash -23758050, now seen corresponding path program 2 times [2024-05-12 12:06:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274783449] [2024-05-12 12:06:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274783449] [2024-05-12 12:06:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274783449] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:26,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303498910] [2024-05-12 12:06:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:26,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:26,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:26,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:26,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 126 transitions, 1197 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:26,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:26,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:27,425 INFO L124 PetriNetUnfolderBase]: 833/1523 cut-off events. [2024-05-12 12:06:27,426 INFO L125 PetriNetUnfolderBase]: For 10069/10072 co-relation queries the response was YES. [2024-05-12 12:06:27,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 1523 events. 833/1523 cut-off events. For 10069/10072 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8127 event pairs, 185 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 6866. Up to 1029 conditions per place. [2024-05-12 12:06:27,435 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 57 changer transitions 0/158 dead transitions. [2024-05-12 12:06:27,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 158 transitions, 1727 flow [2024-05-12 12:06:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-05-12 12:06:27,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:06:27,439 INFO L175 Difference]: Start difference. First operand has 105 places, 126 transitions, 1197 flow. Second operand 7 states and 126 transitions. [2024-05-12 12:06:27,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 158 transitions, 1727 flow [2024-05-12 12:06:27,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 158 transitions, 1657 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 12:06:27,457 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 1422 flow [2024-05-12 12:06:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1422, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-05-12 12:06:27,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-05-12 12:06:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 1422 flow [2024-05-12 12:06:27,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:27,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:06:27,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:27,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1402614136, now seen corresponding path program 3 times [2024-05-12 12:06:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:27,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966723437] [2024-05-12 12:06:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966723437] [2024-05-12 12:06:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966723437] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49368116] [2024-05-12 12:06:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:31,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:31,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 1422 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:31,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:31,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:31,623 INFO L124 PetriNetUnfolderBase]: 843/1538 cut-off events. [2024-05-12 12:06:31,623 INFO L125 PetriNetUnfolderBase]: For 11529/11532 co-relation queries the response was YES. [2024-05-12 12:06:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 1538 events. 843/1538 cut-off events. For 11529/11532 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8256 event pairs, 191 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 7391. Up to 1041 conditions per place. [2024-05-12 12:06:31,634 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 101 selfloop transitions, 54 changer transitions 0/161 dead transitions. [2024-05-12 12:06:31,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 161 transitions, 1898 flow [2024-05-12 12:06:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 12:06:31,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699248120300752 [2024-05-12 12:06:31,638 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 1422 flow. Second operand 7 states and 125 transitions. [2024-05-12 12:06:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 161 transitions, 1898 flow [2024-05-12 12:06:31,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 161 transitions, 1808 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:31,657 INFO L231 Difference]: Finished difference. Result has 112 places, 138 transitions, 1491 flow [2024-05-12 12:06:31,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1491, PETRI_PLACES=112, PETRI_TRANSITIONS=138} [2024-05-12 12:06:31,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2024-05-12 12:06:31,658 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 138 transitions, 1491 flow [2024-05-12 12:06:31,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:31,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:31,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:31,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 12:06:31,659 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:31,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash -407079456, now seen corresponding path program 1 times [2024-05-12 12:06:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:31,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427227313] [2024-05-12 12:06:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427227313] [2024-05-12 12:06:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427227313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:35,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095654444] [2024-05-12 12:06:35,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:35,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:35,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:35,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 138 transitions, 1491 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:35,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:35,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:35,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:36,289 INFO L124 PetriNetUnfolderBase]: 856/1540 cut-off events. [2024-05-12 12:06:36,290 INFO L125 PetriNetUnfolderBase]: For 12168/12186 co-relation queries the response was YES. [2024-05-12 12:06:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1540 events. 856/1540 cut-off events. For 12168/12186 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8136 event pairs, 183 based on Foata normal form. 13/1500 useless extension candidates. Maximal degree in co-relation 7509. Up to 1209 conditions per place. [2024-05-12 12:06:36,300 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 130 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-05-12 12:06:36,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 169 transitions, 2028 flow [2024-05-12 12:06:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 12:06:36,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-05-12 12:06:36,321 INFO L175 Difference]: Start difference. First operand has 112 places, 138 transitions, 1491 flow. Second operand 7 states and 123 transitions. [2024-05-12 12:06:36,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 169 transitions, 2028 flow [2024-05-12 12:06:36,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 169 transitions, 1937 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 12:06:36,341 INFO L231 Difference]: Finished difference. Result has 115 places, 140 transitions, 1490 flow [2024-05-12 12:06:36,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1490, PETRI_PLACES=115, PETRI_TRANSITIONS=140} [2024-05-12 12:06:36,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-05-12 12:06:36,342 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 140 transitions, 1490 flow [2024-05-12 12:06:36,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:36,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:36,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:36,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 12:06:36,343 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:36,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -398739216, now seen corresponding path program 2 times [2024-05-12 12:06:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564700142] [2024-05-12 12:06:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:40,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:40,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564700142] [2024-05-12 12:06:40,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564700142] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:40,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:40,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:06:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877387339] [2024-05-12 12:06:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:40,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:06:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:06:40,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:06:40,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:40,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 140 transitions, 1490 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:40,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:40,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:40,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:41,082 INFO L124 PetriNetUnfolderBase]: 854/1537 cut-off events. [2024-05-12 12:06:41,083 INFO L125 PetriNetUnfolderBase]: For 12542/12560 co-relation queries the response was YES. [2024-05-12 12:06:41,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1537 events. 854/1537 cut-off events. For 12542/12560 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8146 event pairs, 182 based on Foata normal form. 13/1497 useless extension candidates. Maximal degree in co-relation 7444. Up to 1207 conditions per place. [2024-05-12 12:06:41,093 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 130 selfloop transitions, 37 changer transitions 0/173 dead transitions. [2024-05-12 12:06:41,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 2001 flow [2024-05-12 12:06:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:06:41,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 12:06:41,095 INFO L175 Difference]: Start difference. First operand has 115 places, 140 transitions, 1490 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:06:41,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 2001 flow [2024-05-12 12:06:41,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 1922 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:06:41,119 INFO L231 Difference]: Finished difference. Result has 118 places, 140 transitions, 1490 flow [2024-05-12 12:06:41,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1490, PETRI_PLACES=118, PETRI_TRANSITIONS=140} [2024-05-12 12:06:41,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-05-12 12:06:41,119 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 140 transitions, 1490 flow [2024-05-12 12:06:41,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:41,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:41,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:41,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 12:06:41,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:41,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash -398728304, now seen corresponding path program 1 times [2024-05-12 12:06:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:41,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343558596] [2024-05-12 12:06:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:45,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343558596] [2024-05-12 12:06:45,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343558596] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:45,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:45,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:06:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844193919] [2024-05-12 12:06:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:45,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:06:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:06:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:06:45,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:45,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 140 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:45,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:45,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:45,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:46,559 INFO L124 PetriNetUnfolderBase]: 936/1679 cut-off events. [2024-05-12 12:06:46,559 INFO L125 PetriNetUnfolderBase]: For 14652/14655 co-relation queries the response was YES. [2024-05-12 12:06:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8101 conditions, 1679 events. 936/1679 cut-off events. For 14652/14655 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9025 event pairs, 175 based on Foata normal form. 4/1624 useless extension candidates. Maximal degree in co-relation 8045. Up to 889 conditions per place. [2024-05-12 12:06:46,571 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 126 selfloop transitions, 76 changer transitions 0/208 dead transitions. [2024-05-12 12:06:46,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 208 transitions, 2483 flow [2024-05-12 12:06:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:06:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:06:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-05-12 12:06:46,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-05-12 12:06:46,597 INFO L175 Difference]: Start difference. First operand has 118 places, 140 transitions, 1490 flow. Second operand 9 states and 169 transitions. [2024-05-12 12:06:46,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 208 transitions, 2483 flow [2024-05-12 12:06:46,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 208 transitions, 2381 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 12:06:46,626 INFO L231 Difference]: Finished difference. Result has 123 places, 161 transitions, 1829 flow [2024-05-12 12:06:46,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1829, PETRI_PLACES=123, PETRI_TRANSITIONS=161} [2024-05-12 12:06:46,626 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-05-12 12:06:46,626 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 161 transitions, 1829 flow [2024-05-12 12:06:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:46,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:46,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:06:46,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:46,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash -17103694, now seen corresponding path program 1 times [2024-05-12 12:06:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:46,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097045997] [2024-05-12 12:06:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097045997] [2024-05-12 12:06:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097045997] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:50,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:50,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:06:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625573525] [2024-05-12 12:06:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:06:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:06:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:06:50,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:50,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 161 transitions, 1829 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:50,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:50,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:51,335 INFO L124 PetriNetUnfolderBase]: 982/1756 cut-off events. [2024-05-12 12:06:51,335 INFO L125 PetriNetUnfolderBase]: For 16794/16794 co-relation queries the response was YES. [2024-05-12 12:06:51,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 1756 events. 982/1756 cut-off events. For 16794/16794 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9501 event pairs, 211 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 9193. Up to 1461 conditions per place. [2024-05-12 12:06:51,345 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 163 selfloop transitions, 35 changer transitions 0/204 dead transitions. [2024-05-12 12:06:51,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 204 transitions, 2445 flow [2024-05-12 12:06:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:06:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:06:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 12:06:51,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:06:51,357 INFO L175 Difference]: Start difference. First operand has 123 places, 161 transitions, 1829 flow. Second operand 9 states and 153 transitions. [2024-05-12 12:06:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 204 transitions, 2445 flow [2024-05-12 12:06:51,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 204 transitions, 2336 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:51,385 INFO L231 Difference]: Finished difference. Result has 132 places, 173 transitions, 1954 flow [2024-05-12 12:06:51,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1954, PETRI_PLACES=132, PETRI_TRANSITIONS=173} [2024-05-12 12:06:51,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-05-12 12:06:51,386 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 173 transitions, 1954 flow [2024-05-12 12:06:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:51,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:51,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 12:06:51,388 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:51,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 827724196, now seen corresponding path program 2 times [2024-05-12 12:06:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:51,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185292279] [2024-05-12 12:06:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:55,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185292279] [2024-05-12 12:06:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185292279] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:55,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:55,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:06:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278335311] [2024-05-12 12:06:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:06:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:06:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:06:55,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:55,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 173 transitions, 1954 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:55,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:55,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:55,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:56,308 INFO L124 PetriNetUnfolderBase]: 1000/1783 cut-off events. [2024-05-12 12:06:56,309 INFO L125 PetriNetUnfolderBase]: For 18169/18169 co-relation queries the response was YES. [2024-05-12 12:06:56,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9629 conditions, 1783 events. 1000/1783 cut-off events. For 18169/18169 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9613 event pairs, 144 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 9564. Up to 1440 conditions per place. [2024-05-12 12:06:56,321 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 161 selfloop transitions, 38 changer transitions 0/205 dead transitions. [2024-05-12 12:06:56,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 205 transitions, 2506 flow [2024-05-12 12:06:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:06:56,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 12:06:56,323 INFO L175 Difference]: Start difference. First operand has 132 places, 173 transitions, 1954 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:06:56,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 205 transitions, 2506 flow [2024-05-12 12:06:56,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 205 transitions, 2441 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:56,355 INFO L231 Difference]: Finished difference. Result has 138 places, 178 transitions, 2044 flow [2024-05-12 12:06:56,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2044, PETRI_PLACES=138, PETRI_TRANSITIONS=178} [2024-05-12 12:06:56,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-05-12 12:06:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 178 transitions, 2044 flow [2024-05-12 12:06:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:06:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:56,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 12:06:56,357 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1777567268, now seen corresponding path program 3 times [2024-05-12 12:06:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402735131] [2024-05-12 12:06:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:00,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402735131] [2024-05-12 12:07:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402735131] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:00,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:07:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305961587] [2024-05-12 12:07:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:07:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:07:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:07:00,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:00,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 178 transitions, 2044 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:00,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:00,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:01,441 INFO L124 PetriNetUnfolderBase]: 1015/1823 cut-off events. [2024-05-12 12:07:01,442 INFO L125 PetriNetUnfolderBase]: For 20365/20365 co-relation queries the response was YES. [2024-05-12 12:07:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9997 conditions, 1823 events. 1015/1823 cut-off events. For 20365/20365 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9996 event pairs, 203 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 9930. Up to 1497 conditions per place. [2024-05-12 12:07:01,455 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 165 selfloop transitions, 37 changer transitions 0/208 dead transitions. [2024-05-12 12:07:01,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 208 transitions, 2602 flow [2024-05-12 12:07:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:07:01,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:07:01,456 INFO L175 Difference]: Start difference. First operand has 138 places, 178 transitions, 2044 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:07:01,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 208 transitions, 2602 flow [2024-05-12 12:07:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 208 transitions, 2489 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:01,497 INFO L231 Difference]: Finished difference. Result has 141 places, 180 transitions, 2055 flow [2024-05-12 12:07:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2055, PETRI_PLACES=141, PETRI_TRANSITIONS=180} [2024-05-12 12:07:01,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-05-12 12:07:01,498 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 180 transitions, 2055 flow [2024-05-12 12:07:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:01,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 12:07:01,500 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:01,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 579462255, now seen corresponding path program 1 times [2024-05-12 12:07:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158181002] [2024-05-12 12:07:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:05,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158181002] [2024-05-12 12:07:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158181002] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105482948] [2024-05-12 12:07:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:05,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:05,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:05,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 180 transitions, 2055 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:05,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:05,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:06,161 INFO L124 PetriNetUnfolderBase]: 1015/1812 cut-off events. [2024-05-12 12:07:06,161 INFO L125 PetriNetUnfolderBase]: For 20007/20025 co-relation queries the response was YES. [2024-05-12 12:07:06,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 1812 events. 1015/1812 cut-off events. For 20007/20025 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9831 event pairs, 209 based on Foata normal form. 13/1765 useless extension candidates. Maximal degree in co-relation 9764. Up to 1488 conditions per place. [2024-05-12 12:07:06,177 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 161 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-05-12 12:07:06,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 206 transitions, 2599 flow [2024-05-12 12:07:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:07:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:07:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-05-12 12:07:06,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-05-12 12:07:06,179 INFO L175 Difference]: Start difference. First operand has 141 places, 180 transitions, 2055 flow. Second operand 7 states and 123 transitions. [2024-05-12 12:07:06,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 206 transitions, 2599 flow [2024-05-12 12:07:06,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 206 transitions, 2473 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:06,215 INFO L231 Difference]: Finished difference. Result has 142 places, 183 transitions, 2067 flow [2024-05-12 12:07:06,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2067, PETRI_PLACES=142, PETRI_TRANSITIONS=183} [2024-05-12 12:07:06,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-05-12 12:07:06,217 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 183 transitions, 2067 flow [2024-05-12 12:07:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:06,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:06,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:06,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 12:07:06,217 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:06,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:06,218 INFO L85 PathProgramCache]: Analyzing trace with hash 788818788, now seen corresponding path program 1 times [2024-05-12 12:07:06,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:06,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148122608] [2024-05-12 12:07:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148122608] [2024-05-12 12:07:10,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148122608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:10,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343399662] [2024-05-12 12:07:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:10,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:10,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:10,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 183 transitions, 2067 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:10,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:10,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:10,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:11,138 INFO L124 PetriNetUnfolderBase]: 1035/1839 cut-off events. [2024-05-12 12:07:11,139 INFO L125 PetriNetUnfolderBase]: For 20922/20940 co-relation queries the response was YES. [2024-05-12 12:07:11,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 1839 events. 1035/1839 cut-off events. For 20922/20940 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9960 event pairs, 209 based on Foata normal form. 14/1794 useless extension candidates. Maximal degree in co-relation 9865. Up to 1517 conditions per place. [2024-05-12 12:07:11,152 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 171 selfloop transitions, 36 changer transitions 0/213 dead transitions. [2024-05-12 12:07:11,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 213 transitions, 2627 flow [2024-05-12 12:07:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:07:11,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 12:07:11,154 INFO L175 Difference]: Start difference. First operand has 142 places, 183 transitions, 2067 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:07:11,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 213 transitions, 2627 flow [2024-05-12 12:07:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 2547 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:11,195 INFO L231 Difference]: Finished difference. Result has 145 places, 186 transitions, 2097 flow [2024-05-12 12:07:11,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2097, PETRI_PLACES=145, PETRI_TRANSITIONS=186} [2024-05-12 12:07:11,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-05-12 12:07:11,196 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 186 transitions, 2097 flow [2024-05-12 12:07:11,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:11,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:11,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 12:07:11,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:11,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 904023646, now seen corresponding path program 2 times [2024-05-12 12:07:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:11,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175689918] [2024-05-12 12:07:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175689918] [2024-05-12 12:07:15,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175689918] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:15,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377710178] [2024-05-12 12:07:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:15,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:15,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 186 transitions, 2097 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:15,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:15,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:15,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:15,773 INFO L124 PetriNetUnfolderBase]: 1055/1869 cut-off events. [2024-05-12 12:07:15,773 INFO L125 PetriNetUnfolderBase]: For 20676/20676 co-relation queries the response was YES. [2024-05-12 12:07:15,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10137 conditions, 1869 events. 1055/1869 cut-off events. For 20676/20676 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10190 event pairs, 165 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 10067. Up to 1189 conditions per place. [2024-05-12 12:07:15,787 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 142 selfloop transitions, 80 changer transitions 0/228 dead transitions. [2024-05-12 12:07:15,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 228 transitions, 2897 flow [2024-05-12 12:07:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 12:07:15,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-05-12 12:07:15,788 INFO L175 Difference]: Start difference. First operand has 145 places, 186 transitions, 2097 flow. Second operand 8 states and 146 transitions. [2024-05-12 12:07:15,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 228 transitions, 2897 flow [2024-05-12 12:07:15,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 228 transitions, 2819 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:15,830 INFO L231 Difference]: Finished difference. Result has 149 places, 196 transitions, 2357 flow [2024-05-12 12:07:15,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2357, PETRI_PLACES=149, PETRI_TRANSITIONS=196} [2024-05-12 12:07:15,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-05-12 12:07:15,831 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 196 transitions, 2357 flow [2024-05-12 12:07:15,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:15,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 12:07:15,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:15,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 904016206, now seen corresponding path program 3 times [2024-05-12 12:07:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563100217] [2024-05-12 12:07:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:20,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:20,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563100217] [2024-05-12 12:07:20,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563100217] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:20,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:20,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:20,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146210855] [2024-05-12 12:07:20,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:20,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:20,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:20,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 196 transitions, 2357 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:20,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:20,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:20,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:20,808 INFO L124 PetriNetUnfolderBase]: 1075/1902 cut-off events. [2024-05-12 12:07:20,808 INFO L125 PetriNetUnfolderBase]: For 22907/22907 co-relation queries the response was YES. [2024-05-12 12:07:20,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10880 conditions, 1902 events. 1075/1902 cut-off events. For 22907/22907 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10375 event pairs, 162 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 10807. Up to 1206 conditions per place. [2024-05-12 12:07:20,822 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 145 selfloop transitions, 80 changer transitions 0/231 dead transitions. [2024-05-12 12:07:20,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 231 transitions, 3112 flow [2024-05-12 12:07:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 12:07:20,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-05-12 12:07:20,823 INFO L175 Difference]: Start difference. First operand has 149 places, 196 transitions, 2357 flow. Second operand 8 states and 146 transitions. [2024-05-12 12:07:20,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 231 transitions, 3112 flow [2024-05-12 12:07:20,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 231 transitions, 2966 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:20,875 INFO L231 Difference]: Finished difference. Result has 152 places, 199 transitions, 2418 flow [2024-05-12 12:07:20,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2418, PETRI_PLACES=152, PETRI_TRANSITIONS=199} [2024-05-12 12:07:20,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-05-12 12:07:20,875 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 199 transitions, 2418 flow [2024-05-12 12:07:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:20,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:20,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:20,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 12:07:20,876 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:20,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash 904997736, now seen corresponding path program 4 times [2024-05-12 12:07:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910824068] [2024-05-12 12:07:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910824068] [2024-05-12 12:07:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910824068] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:25,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:25,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561116816] [2024-05-12 12:07:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:25,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:25,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:25,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:25,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:25,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 199 transitions, 2418 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:25,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:25,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:26,074 INFO L124 PetriNetUnfolderBase]: 1090/1920 cut-off events. [2024-05-12 12:07:26,074 INFO L125 PetriNetUnfolderBase]: For 24835/24835 co-relation queries the response was YES. [2024-05-12 12:07:26,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11054 conditions, 1920 events. 1090/1920 cut-off events. For 24835/24835 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10465 event pairs, 200 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 10980. Up to 1573 conditions per place. [2024-05-12 12:07:26,087 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 182 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-05-12 12:07:26,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 229 transitions, 3024 flow [2024-05-12 12:07:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-05-12 12:07:26,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-05-12 12:07:26,088 INFO L175 Difference]: Start difference. First operand has 152 places, 199 transitions, 2418 flow. Second operand 8 states and 137 transitions. [2024-05-12 12:07:26,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 229 transitions, 3024 flow [2024-05-12 12:07:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 229 transitions, 2886 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:26,133 INFO L231 Difference]: Finished difference. Result has 155 places, 201 transitions, 2407 flow [2024-05-12 12:07:26,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2407, PETRI_PLACES=155, PETRI_TRANSITIONS=201} [2024-05-12 12:07:26,134 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-05-12 12:07:26,134 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 201 transitions, 2407 flow [2024-05-12 12:07:26,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:26,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:26,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 12:07:26,135 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:26,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -233570542, now seen corresponding path program 4 times [2024-05-12 12:07:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375864819] [2024-05-12 12:07:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:26,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375864819] [2024-05-12 12:07:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375864819] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:30,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:30,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:30,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729091955] [2024-05-12 12:07:30,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:30,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:30,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:30,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:30,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 201 transitions, 2407 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:30,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:30,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:30,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:31,118 INFO L124 PetriNetUnfolderBase]: 1100/1942 cut-off events. [2024-05-12 12:07:31,118 INFO L125 PetriNetUnfolderBase]: For 25946/25946 co-relation queries the response was YES. [2024-05-12 12:07:31,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 1942 events. 1100/1942 cut-off events. For 25946/25946 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10674 event pairs, 183 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 10989. Up to 1243 conditions per place. [2024-05-12 12:07:31,132 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 152 selfloop transitions, 80 changer transitions 0/238 dead transitions. [2024-05-12 12:07:31,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 238 transitions, 3202 flow [2024-05-12 12:07:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 12:07:31,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:07:31,134 INFO L175 Difference]: Start difference. First operand has 155 places, 201 transitions, 2407 flow. Second operand 8 states and 144 transitions. [2024-05-12 12:07:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 238 transitions, 3202 flow [2024-05-12 12:07:31,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 238 transitions, 3091 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:31,187 INFO L231 Difference]: Finished difference. Result has 158 places, 209 transitions, 2608 flow [2024-05-12 12:07:31,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2608, PETRI_PLACES=158, PETRI_TRANSITIONS=209} [2024-05-12 12:07:31,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-05-12 12:07:31,188 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 209 transitions, 2608 flow [2024-05-12 12:07:31,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:31,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:31,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:31,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 12:07:31,188 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:31,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 514783128, now seen corresponding path program 5 times [2024-05-12 12:07:31,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435363249] [2024-05-12 12:07:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435363249] [2024-05-12 12:07:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435363249] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:34,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27951695] [2024-05-12 12:07:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:34,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:34,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 209 transitions, 2608 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:34,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:34,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:34,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:35,516 INFO L124 PetriNetUnfolderBase]: 1120/1969 cut-off events. [2024-05-12 12:07:35,516 INFO L125 PetriNetUnfolderBase]: For 28009/28009 co-relation queries the response was YES. [2024-05-12 12:07:35,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11564 conditions, 1969 events. 1120/1969 cut-off events. For 28009/28009 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10739 event pairs, 197 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 11487. Up to 1260 conditions per place. [2024-05-12 12:07:35,531 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 151 selfloop transitions, 83 changer transitions 0/240 dead transitions. [2024-05-12 12:07:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 240 transitions, 3356 flow [2024-05-12 12:07:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 12:07:35,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-05-12 12:07:35,532 INFO L175 Difference]: Start difference. First operand has 158 places, 209 transitions, 2608 flow. Second operand 8 states and 145 transitions. [2024-05-12 12:07:35,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 240 transitions, 3356 flow [2024-05-12 12:07:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 240 transitions, 3253 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:35,592 INFO L231 Difference]: Finished difference. Result has 162 places, 212 transitions, 2719 flow [2024-05-12 12:07:35,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2719, PETRI_PLACES=162, PETRI_TRANSITIONS=212} [2024-05-12 12:07:35,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-05-12 12:07:35,593 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 212 transitions, 2719 flow [2024-05-12 12:07:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:35,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:35,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 12:07:35,593 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:35,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 514790847, now seen corresponding path program 1 times [2024-05-12 12:07:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:35,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920818101] [2024-05-12 12:07:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920818101] [2024-05-12 12:07:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920818101] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:39,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:39,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:39,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741543916] [2024-05-12 12:07:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:39,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:39,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 212 transitions, 2719 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:39,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:39,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:39,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:40,147 INFO L124 PetriNetUnfolderBase]: 1133/1992 cut-off events. [2024-05-12 12:07:40,147 INFO L125 PetriNetUnfolderBase]: For 29357/29375 co-relation queries the response was YES. [2024-05-12 12:07:40,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11751 conditions, 1992 events. 1133/1992 cut-off events. For 29357/29375 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10926 event pairs, 207 based on Foata normal form. 13/1945 useless extension candidates. Maximal degree in co-relation 11673. Up to 1582 conditions per place. [2024-05-12 12:07:40,163 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 199 selfloop transitions, 47 changer transitions 0/252 dead transitions. [2024-05-12 12:07:40,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 252 transitions, 3586 flow [2024-05-12 12:07:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 12:07:40,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-05-12 12:07:40,165 INFO L175 Difference]: Start difference. First operand has 162 places, 212 transitions, 2719 flow. Second operand 8 states and 141 transitions. [2024-05-12 12:07:40,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 252 transitions, 3586 flow [2024-05-12 12:07:40,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 252 transitions, 3311 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:40,234 INFO L231 Difference]: Finished difference. Result has 164 places, 215 transitions, 2600 flow [2024-05-12 12:07:40,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2472, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2600, PETRI_PLACES=164, PETRI_TRANSITIONS=215} [2024-05-12 12:07:40,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-05-12 12:07:40,234 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 215 transitions, 2600 flow [2024-05-12 12:07:40,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:40,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:40,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:40,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 12:07:40,235 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:40,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 258074856, now seen corresponding path program 5 times [2024-05-12 12:07:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:40,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925340429] [2024-05-12 12:07:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:45,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925340429] [2024-05-12 12:07:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925340429] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:45,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:45,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:07:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413906968] [2024-05-12 12:07:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:07:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:07:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:07:45,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:45,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 215 transitions, 2600 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:45,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:45,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:45,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:45,939 INFO L124 PetriNetUnfolderBase]: 1148/2023 cut-off events. [2024-05-12 12:07:45,939 INFO L125 PetriNetUnfolderBase]: For 29250/29250 co-relation queries the response was YES. [2024-05-12 12:07:45,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 2023 events. 1148/2023 cut-off events. For 29250/29250 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11173 event pairs, 168 based on Foata normal form. 4/1963 useless extension candidates. Maximal degree in co-relation 11525. Up to 1460 conditions per place. [2024-05-12 12:07:45,955 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 175 selfloop transitions, 63 changer transitions 0/244 dead transitions. [2024-05-12 12:07:45,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 244 transitions, 3246 flow [2024-05-12 12:07:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:07:45,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:07:45,957 INFO L175 Difference]: Start difference. First operand has 164 places, 215 transitions, 2600 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:07:45,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 244 transitions, 3246 flow [2024-05-12 12:07:46,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 244 transitions, 3131 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:46,017 INFO L231 Difference]: Finished difference. Result has 166 places, 218 transitions, 2669 flow [2024-05-12 12:07:46,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2669, PETRI_PLACES=166, PETRI_TRANSITIONS=218} [2024-05-12 12:07:46,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-05-12 12:07:46,018 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 218 transitions, 2669 flow [2024-05-12 12:07:46,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:46,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:46,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:46,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 12:07:46,019 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:46,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash 514790568, now seen corresponding path program 6 times [2024-05-12 12:07:46,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:46,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220274072] [2024-05-12 12:07:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:46,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220274072] [2024-05-12 12:07:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220274072] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879276879] [2024-05-12 12:07:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:50,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:50,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 218 transitions, 2669 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:50,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:50,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:50,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:50,889 INFO L124 PetriNetUnfolderBase]: 1170/2056 cut-off events. [2024-05-12 12:07:50,889 INFO L125 PetriNetUnfolderBase]: For 30391/30391 co-relation queries the response was YES. [2024-05-12 12:07:50,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 2056 events. 1170/2056 cut-off events. For 30391/30391 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11352 event pairs, 193 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 11833. Up to 1324 conditions per place. [2024-05-12 12:07:50,912 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 160 selfloop transitions, 87 changer transitions 0/253 dead transitions. [2024-05-12 12:07:50,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 253 transitions, 3480 flow [2024-05-12 12:07:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 12:07:50,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-05-12 12:07:50,915 INFO L175 Difference]: Start difference. First operand has 166 places, 218 transitions, 2669 flow. Second operand 8 states and 146 transitions. [2024-05-12 12:07:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 253 transitions, 3480 flow [2024-05-12 12:07:50,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 253 transitions, 3318 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-05-12 12:07:50,994 INFO L231 Difference]: Finished difference. Result has 169 places, 224 transitions, 2764 flow [2024-05-12 12:07:50,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2764, PETRI_PLACES=169, PETRI_TRANSITIONS=224} [2024-05-12 12:07:50,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-05-12 12:07:50,994 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 224 transitions, 2764 flow [2024-05-12 12:07:50,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:50,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:50,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 12:07:50,995 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:50,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 523987617, now seen corresponding path program 2 times [2024-05-12 12:07:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618227632] [2024-05-12 12:07:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:55,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:55,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618227632] [2024-05-12 12:07:55,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618227632] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:55,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:55,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:07:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844606415] [2024-05-12 12:07:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:55,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:07:55,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:07:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:07:55,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:55,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 224 transitions, 2764 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:55,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:55,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:55,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:55,858 INFO L124 PetriNetUnfolderBase]: 1183/2070 cut-off events. [2024-05-12 12:07:55,858 INFO L125 PetriNetUnfolderBase]: For 30571/30589 co-relation queries the response was YES. [2024-05-12 12:07:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12051 conditions, 2070 events. 1183/2070 cut-off events. For 30571/30589 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11382 event pairs, 205 based on Foata normal form. 13/2023 useless extension candidates. Maximal degree in co-relation 11969. Up to 1654 conditions per place. [2024-05-12 12:07:55,874 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 210 selfloop transitions, 54 changer transitions 0/270 dead transitions. [2024-05-12 12:07:55,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 270 transitions, 3697 flow [2024-05-12 12:07:55,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:07:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:07:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 12:07:55,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 12:07:55,877 INFO L175 Difference]: Start difference. First operand has 169 places, 224 transitions, 2764 flow. Second operand 9 states and 158 transitions. [2024-05-12 12:07:55,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 270 transitions, 3697 flow [2024-05-12 12:07:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 270 transitions, 3529 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:55,963 INFO L231 Difference]: Finished difference. Result has 174 places, 227 transitions, 2749 flow [2024-05-12 12:07:55,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2749, PETRI_PLACES=174, PETRI_TRANSITIONS=227} [2024-05-12 12:07:55,964 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-05-12 12:07:55,964 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 227 transitions, 2749 flow [2024-05-12 12:07:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:07:55,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:55,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 12:07:55,965 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:55,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 524314047, now seen corresponding path program 3 times [2024-05-12 12:07:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614882308] [2024-05-12 12:07:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:00,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:00,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614882308] [2024-05-12 12:08:00,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614882308] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:00,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:00,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:00,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910033353] [2024-05-12 12:08:00,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:00,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:00,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 227 transitions, 2749 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:00,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:00,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:01,016 INFO L124 PetriNetUnfolderBase]: 1181/2070 cut-off events. [2024-05-12 12:08:01,016 INFO L125 PetriNetUnfolderBase]: For 30506/30524 co-relation queries the response was YES. [2024-05-12 12:08:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11926 conditions, 2070 events. 1181/2070 cut-off events. For 30506/30524 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11441 event pairs, 206 based on Foata normal form. 13/2022 useless extension candidates. Maximal degree in co-relation 11843. Up to 1652 conditions per place. [2024-05-12 12:08:01,033 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 208 selfloop transitions, 54 changer transitions 0/268 dead transitions. [2024-05-12 12:08:01,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 268 transitions, 3561 flow [2024-05-12 12:08:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 12:08:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 12:08:01,034 INFO L175 Difference]: Start difference. First operand has 174 places, 227 transitions, 2749 flow. Second operand 9 states and 156 transitions. [2024-05-12 12:08:01,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 268 transitions, 3561 flow [2024-05-12 12:08:01,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 268 transitions, 3433 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 12:08:01,117 INFO L231 Difference]: Finished difference. Result has 176 places, 227 transitions, 2736 flow [2024-05-12 12:08:01,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2736, PETRI_PLACES=176, PETRI_TRANSITIONS=227} [2024-05-12 12:08:01,118 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-05-12 12:08:01,118 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 227 transitions, 2736 flow [2024-05-12 12:08:01,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:01,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:01,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:01,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 12:08:01,118 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:01,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash 523987338, now seen corresponding path program 7 times [2024-05-12 12:08:01,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:01,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761599285] [2024-05-12 12:08:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:01,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761599285] [2024-05-12 12:08:04,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761599285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:04,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085155795] [2024-05-12 12:08:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:04,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:05,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:05,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 227 transitions, 2736 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:05,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:05,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:05,719 INFO L124 PetriNetUnfolderBase]: 1177/2070 cut-off events. [2024-05-12 12:08:05,720 INFO L125 PetriNetUnfolderBase]: For 30627/30627 co-relation queries the response was YES. [2024-05-12 12:08:05,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11841 conditions, 2070 events. 1177/2070 cut-off events. For 30627/30627 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11473 event pairs, 163 based on Foata normal form. 2/2007 useless extension candidates. Maximal degree in co-relation 11757. Up to 1338 conditions per place. [2024-05-12 12:08:05,737 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 157 selfloop transitions, 96 changer transitions 0/259 dead transitions. [2024-05-12 12:08:05,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 259 transitions, 3462 flow [2024-05-12 12:08:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:08:05,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:08:05,738 INFO L175 Difference]: Start difference. First operand has 176 places, 227 transitions, 2736 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:08:05,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 259 transitions, 3462 flow [2024-05-12 12:08:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 259 transitions, 3338 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 12:08:05,819 INFO L231 Difference]: Finished difference. Result has 177 places, 227 transitions, 2811 flow [2024-05-12 12:08:05,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2811, PETRI_PLACES=177, PETRI_TRANSITIONS=227} [2024-05-12 12:08:05,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-05-12 12:08:05,820 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 227 transitions, 2811 flow [2024-05-12 12:08:05,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:05,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:05,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 12:08:05,821 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:05,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 524325951, now seen corresponding path program 1 times [2024-05-12 12:08:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922559238] [2024-05-12 12:08:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:10,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922559238] [2024-05-12 12:08:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922559238] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:10,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:08:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838308535] [2024-05-12 12:08:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:08:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:08:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:08:10,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:10,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 227 transitions, 2811 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:10,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:10,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:10,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:11,651 INFO L124 PetriNetUnfolderBase]: 1210/2109 cut-off events. [2024-05-12 12:08:11,651 INFO L125 PetriNetUnfolderBase]: For 33941/33959 co-relation queries the response was YES. [2024-05-12 12:08:11,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12359 conditions, 2109 events. 1210/2109 cut-off events. For 33941/33959 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11639 event pairs, 202 based on Foata normal form. 16/2068 useless extension candidates. Maximal degree in co-relation 12274. Up to 1631 conditions per place. [2024-05-12 12:08:11,669 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 213 selfloop transitions, 64 changer transitions 0/283 dead transitions. [2024-05-12 12:08:11,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 283 transitions, 3798 flow [2024-05-12 12:08:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:08:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:08:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-05-12 12:08:11,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-05-12 12:08:11,671 INFO L175 Difference]: Start difference. First operand has 177 places, 227 transitions, 2811 flow. Second operand 10 states and 174 transitions. [2024-05-12 12:08:11,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 283 transitions, 3798 flow [2024-05-12 12:08:11,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 283 transitions, 3540 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-05-12 12:08:11,751 INFO L231 Difference]: Finished difference. Result has 179 places, 237 transitions, 2851 flow [2024-05-12 12:08:11,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2851, PETRI_PLACES=179, PETRI_TRANSITIONS=237} [2024-05-12 12:08:11,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-05-12 12:08:11,752 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 237 transitions, 2851 flow [2024-05-12 12:08:11,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:11,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:11,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 12:08:11,753 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:11,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 776106589, now seen corresponding path program 1 times [2024-05-12 12:08:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414048138] [2024-05-12 12:08:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414048138] [2024-05-12 12:08:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414048138] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:08:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023079310] [2024-05-12 12:08:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:08:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:08:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:08:12,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 12:08:12,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 237 transitions, 2851 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) [2024-05-12 12:08:12,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:12,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 12:08:12,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:12,879 INFO L124 PetriNetUnfolderBase]: 1634/2915 cut-off events. [2024-05-12 12:08:12,879 INFO L125 PetriNetUnfolderBase]: For 32732/32765 co-relation queries the response was YES. [2024-05-12 12:08:12,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15464 conditions, 2915 events. 1634/2915 cut-off events. For 32732/32765 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18278 event pairs, 119 based on Foata normal form. 18/2834 useless extension candidates. Maximal degree in co-relation 15378. Up to 1066 conditions per place. [2024-05-12 12:08:12,905 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 173 selfloop transitions, 131 changer transitions 43/417 dead transitions. [2024-05-12 12:08:12,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 417 transitions, 5289 flow [2024-05-12 12:08:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:08:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:08:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 250 transitions. [2024-05-12 12:08:12,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482456140350878 [2024-05-12 12:08:12,907 INFO L175 Difference]: Start difference. First operand has 179 places, 237 transitions, 2851 flow. Second operand 12 states and 250 transitions. [2024-05-12 12:08:12,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 417 transitions, 5289 flow [2024-05-12 12:08:13,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 417 transitions, 4964 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-05-12 12:08:13,019 INFO L231 Difference]: Finished difference. Result has 193 places, 329 transitions, 4340 flow [2024-05-12 12:08:13,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4340, PETRI_PLACES=193, PETRI_TRANSITIONS=329} [2024-05-12 12:08:13,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-05-12 12:08:13,020 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 329 transitions, 4340 flow [2024-05-12 12:08:13,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-05-12 12:08:13,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:13,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 12:08:13,021 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:13,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 781554499, now seen corresponding path program 1 times [2024-05-12 12:08:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916047422] [2024-05-12 12:08:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:16,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:16,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916047422] [2024-05-12 12:08:16,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916047422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:16,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780735150] [2024-05-12 12:08:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:17,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 329 transitions, 4340 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:17,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:17,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:17,994 INFO L124 PetriNetUnfolderBase]: 1754/3062 cut-off events. [2024-05-12 12:08:17,994 INFO L125 PetriNetUnfolderBase]: For 50611/50685 co-relation queries the response was YES. [2024-05-12 12:08:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20240 conditions, 3062 events. 1754/3062 cut-off events. For 50611/50685 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18246 event pairs, 189 based on Foata normal form. 28/3070 useless extension candidates. Maximal degree in co-relation 20145. Up to 2626 conditions per place. [2024-05-12 12:08:18,022 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 274 selfloop transitions, 38 changer transitions 40/359 dead transitions. [2024-05-12 12:08:18,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 359 transitions, 5216 flow [2024-05-12 12:08:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 12:08:18,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:08:18,024 INFO L175 Difference]: Start difference. First operand has 193 places, 329 transitions, 4340 flow. Second operand 8 states and 136 transitions. [2024-05-12 12:08:18,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 359 transitions, 5216 flow [2024-05-12 12:08:18,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 359 transitions, 5026 flow, removed 95 selfloop flow, removed 0 redundant places. [2024-05-12 12:08:18,214 INFO L231 Difference]: Finished difference. Result has 201 places, 292 transitions, 3831 flow [2024-05-12 12:08:18,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3831, PETRI_PLACES=201, PETRI_TRANSITIONS=292} [2024-05-12 12:08:18,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-05-12 12:08:18,215 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 292 transitions, 3831 flow [2024-05-12 12:08:18,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:18,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:18,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:18,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 12:08:18,215 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:18,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1404190037, now seen corresponding path program 2 times [2024-05-12 12:08:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319999308] [2024-05-12 12:08:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:22,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:22,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319999308] [2024-05-12 12:08:22,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319999308] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:22,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:22,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392123034] [2024-05-12 12:08:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:22,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:22,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:22,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 292 transitions, 3831 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:22,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:22,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:22,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:23,746 INFO L124 PetriNetUnfolderBase]: 1576/2726 cut-off events. [2024-05-12 12:08:23,747 INFO L125 PetriNetUnfolderBase]: For 50151/50201 co-relation queries the response was YES. [2024-05-12 12:08:23,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18030 conditions, 2726 events. 1576/2726 cut-off events. For 50151/50201 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15744 event pairs, 199 based on Foata normal form. 20/2735 useless extension candidates. Maximal degree in co-relation 17931. Up to 2277 conditions per place. [2024-05-12 12:08:23,775 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 277 selfloop transitions, 46 changer transitions 0/330 dead transitions. [2024-05-12 12:08:23,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 330 transitions, 4821 flow [2024-05-12 12:08:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:08:23,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:08:23,777 INFO L175 Difference]: Start difference. First operand has 201 places, 292 transitions, 3831 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:08:23,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 330 transitions, 4821 flow [2024-05-12 12:08:23,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 330 transitions, 4674 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-05-12 12:08:23,958 INFO L231 Difference]: Finished difference. Result has 192 places, 298 transitions, 3908 flow [2024-05-12 12:08:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3908, PETRI_PLACES=192, PETRI_TRANSITIONS=298} [2024-05-12 12:08:23,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-05-12 12:08:23,959 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 298 transitions, 3908 flow [2024-05-12 12:08:23,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:23,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:23,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 12:08:23,959 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:23,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1404185201, now seen corresponding path program 1 times [2024-05-12 12:08:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564952125] [2024-05-12 12:08:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564952125] [2024-05-12 12:08:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564952125] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:28,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:28,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471288919] [2024-05-12 12:08:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:28,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:28,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 298 transitions, 3908 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:28,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:28,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:28,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:29,269 INFO L124 PetriNetUnfolderBase]: 1577/2728 cut-off events. [2024-05-12 12:08:29,269 INFO L125 PetriNetUnfolderBase]: For 49918/49968 co-relation queries the response was YES. [2024-05-12 12:08:29,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 2728 events. 1577/2728 cut-off events. For 49918/49968 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15729 event pairs, 205 based on Foata normal form. 19/2736 useless extension candidates. Maximal degree in co-relation 17730. Up to 2330 conditions per place. [2024-05-12 12:08:29,295 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 48 changer transitions 0/334 dead transitions. [2024-05-12 12:08:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 334 transitions, 4808 flow [2024-05-12 12:08:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:08:29,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:08:29,297 INFO L175 Difference]: Start difference. First operand has 192 places, 298 transitions, 3908 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:08:29,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 334 transitions, 4808 flow [2024-05-12 12:08:29,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 334 transitions, 4670 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:29,439 INFO L231 Difference]: Finished difference. Result has 196 places, 302 transitions, 3954 flow [2024-05-12 12:08:29,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3778, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3954, PETRI_PLACES=196, PETRI_TRANSITIONS=302} [2024-05-12 12:08:29,440 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-05-12 12:08:29,440 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 302 transitions, 3954 flow [2024-05-12 12:08:29,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:29,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:29,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:29,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 12:08:29,440 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:29,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1321068497, now seen corresponding path program 3 times [2024-05-12 12:08:29,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:29,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196670280] [2024-05-12 12:08:29,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:29,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196670280] [2024-05-12 12:08:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196670280] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:33,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738078237] [2024-05-12 12:08:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:33,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:33,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:33,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 302 transitions, 3954 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:33,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:33,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:33,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:34,888 INFO L124 PetriNetUnfolderBase]: 1571/2718 cut-off events. [2024-05-12 12:08:34,889 INFO L125 PetriNetUnfolderBase]: For 49950/50000 co-relation queries the response was YES. [2024-05-12 12:08:34,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17673 conditions, 2718 events. 1571/2718 cut-off events. For 49950/50000 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15686 event pairs, 202 based on Foata normal form. 22/2729 useless extension candidates. Maximal degree in co-relation 17576. Up to 2322 conditions per place. [2024-05-12 12:08:34,918 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 283 selfloop transitions, 43 changer transitions 0/333 dead transitions. [2024-05-12 12:08:34,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 333 transitions, 4772 flow [2024-05-12 12:08:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:08:34,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 12:08:34,919 INFO L175 Difference]: Start difference. First operand has 196 places, 302 transitions, 3954 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:08:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 333 transitions, 4772 flow [2024-05-12 12:08:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 333 transitions, 4652 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 12:08:35,088 INFO L231 Difference]: Finished difference. Result has 198 places, 302 transitions, 3927 flow [2024-05-12 12:08:35,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3927, PETRI_PLACES=198, PETRI_TRANSITIONS=302} [2024-05-12 12:08:35,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-05-12 12:08:35,089 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 302 transitions, 3927 flow [2024-05-12 12:08:35,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:35,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:35,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 12:08:35,092 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:35,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1316419923, now seen corresponding path program 1 times [2024-05-12 12:08:35,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:35,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342921861] [2024-05-12 12:08:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:35,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:39,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:39,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342921861] [2024-05-12 12:08:39,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342921861] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:39,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:39,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278656749] [2024-05-12 12:08:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:39,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:39,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 302 transitions, 3927 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:39,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:39,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:39,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:40,298 INFO L124 PetriNetUnfolderBase]: 1601/2767 cut-off events. [2024-05-12 12:08:40,298 INFO L125 PetriNetUnfolderBase]: For 49522/49572 co-relation queries the response was YES. [2024-05-12 12:08:40,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17878 conditions, 2767 events. 1601/2767 cut-off events. For 49522/49572 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15969 event pairs, 202 based on Foata normal form. 21/2776 useless extension candidates. Maximal degree in co-relation 17780. Up to 2364 conditions per place. [2024-05-12 12:08:40,324 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 296 selfloop transitions, 41 changer transitions 0/344 dead transitions. [2024-05-12 12:08:40,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 344 transitions, 4863 flow [2024-05-12 12:08:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 12:08:40,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-05-12 12:08:40,327 INFO L175 Difference]: Start difference. First operand has 198 places, 302 transitions, 3927 flow. Second operand 9 states and 154 transitions. [2024-05-12 12:08:40,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 344 transitions, 4863 flow [2024-05-12 12:08:40,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 344 transitions, 4786 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-05-12 12:08:40,478 INFO L231 Difference]: Finished difference. Result has 201 places, 306 transitions, 3990 flow [2024-05-12 12:08:40,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3990, PETRI_PLACES=201, PETRI_TRANSITIONS=306} [2024-05-12 12:08:40,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-05-12 12:08:40,479 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 306 transitions, 3990 flow [2024-05-12 12:08:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:40,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:40,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 12:08:40,479 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:40,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2003160199, now seen corresponding path program 2 times [2024-05-12 12:08:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:40,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308253736] [2024-05-12 12:08:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:44,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308253736] [2024-05-12 12:08:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308253736] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014042930] [2024-05-12 12:08:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:44,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:44,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:44,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 306 transitions, 3990 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:45,810 INFO L124 PetriNetUnfolderBase]: 1640/2827 cut-off events. [2024-05-12 12:08:45,810 INFO L125 PetriNetUnfolderBase]: For 52359/52421 co-relation queries the response was YES. [2024-05-12 12:08:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18330 conditions, 2827 events. 1640/2827 cut-off events. For 52359/52421 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16387 event pairs, 177 based on Foata normal form. 16/2831 useless extension candidates. Maximal degree in co-relation 18231. Up to 1566 conditions per place. [2024-05-12 12:08:45,834 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 226 selfloop transitions, 133 changer transitions 0/366 dead transitions. [2024-05-12 12:08:45,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 366 transitions, 5344 flow [2024-05-12 12:08:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 12:08:45,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-05-12 12:08:45,835 INFO L175 Difference]: Start difference. First operand has 201 places, 306 transitions, 3990 flow. Second operand 9 states and 168 transitions. [2024-05-12 12:08:45,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 366 transitions, 5344 flow [2024-05-12 12:08:46,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 366 transitions, 5271 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 12:08:46,006 INFO L231 Difference]: Finished difference. Result has 206 places, 318 transitions, 4416 flow [2024-05-12 12:08:46,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4416, PETRI_PLACES=206, PETRI_TRANSITIONS=318} [2024-05-12 12:08:46,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-05-12 12:08:46,006 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 318 transitions, 4416 flow [2024-05-12 12:08:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:46,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:46,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 12:08:46,007 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:46,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 750945689, now seen corresponding path program 3 times [2024-05-12 12:08:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618608425] [2024-05-12 12:08:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:50,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:50,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618608425] [2024-05-12 12:08:50,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618608425] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281838265] [2024-05-12 12:08:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:50,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:50,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:50,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 318 transitions, 4416 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:50,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:50,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:50,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:51,101 INFO L124 PetriNetUnfolderBase]: 1670/2873 cut-off events. [2024-05-12 12:08:51,102 INFO L125 PetriNetUnfolderBase]: For 56163/56225 co-relation queries the response was YES. [2024-05-12 12:08:51,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 2873 events. 1670/2873 cut-off events. For 56163/56225 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16684 event pairs, 177 based on Foata normal form. 15/2876 useless extension candidates. Maximal degree in co-relation 19289. Up to 1578 conditions per place. [2024-05-12 12:08:51,133 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 236 selfloop transitions, 127 changer transitions 0/370 dead transitions. [2024-05-12 12:08:51,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 370 transitions, 5672 flow [2024-05-12 12:08:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 12:08:51,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-05-12 12:08:51,135 INFO L175 Difference]: Start difference. First operand has 206 places, 318 transitions, 4416 flow. Second operand 9 states and 168 transitions. [2024-05-12 12:08:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 370 transitions, 5672 flow [2024-05-12 12:08:51,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 370 transitions, 5505 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:51,409 INFO L231 Difference]: Finished difference. Result has 211 places, 322 transitions, 4575 flow [2024-05-12 12:08:51,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4249, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4575, PETRI_PLACES=211, PETRI_TRANSITIONS=322} [2024-05-12 12:08:51,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-05-12 12:08:51,410 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 322 transitions, 4575 flow [2024-05-12 12:08:51,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:08:51,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:51,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 12:08:51,411 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:51,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2009835243, now seen corresponding path program 4 times [2024-05-12 12:08:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402496911] [2024-05-12 12:08:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402496911] [2024-05-12 12:08:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402496911] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:55,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:08:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926492187] [2024-05-12 12:08:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:08:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:08:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:08:55,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:55,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 322 transitions, 4575 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:55,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:55,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:56,759 INFO L124 PetriNetUnfolderBase]: 1698/2921 cut-off events. [2024-05-12 12:08:56,759 INFO L125 PetriNetUnfolderBase]: For 59913/59975 co-relation queries the response was YES. [2024-05-12 12:08:56,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20097 conditions, 2921 events. 1698/2921 cut-off events. For 59913/59975 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17066 event pairs, 163 based on Foata normal form. 16/2925 useless extension candidates. Maximal degree in co-relation 19994. Up to 2315 conditions per place. [2024-05-12 12:08:56,788 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 285 selfloop transitions, 67 changer transitions 0/359 dead transitions. [2024-05-12 12:08:56,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 359 transitions, 5545 flow [2024-05-12 12:08:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:08:56,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:08:56,790 INFO L175 Difference]: Start difference. First operand has 211 places, 322 transitions, 4575 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:08:56,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 359 transitions, 5545 flow [2024-05-12 12:08:56,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 359 transitions, 5322 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 12:08:56,994 INFO L231 Difference]: Finished difference. Result has 213 places, 325 transitions, 4562 flow [2024-05-12 12:08:56,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4352, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4562, PETRI_PLACES=213, PETRI_TRANSITIONS=325} [2024-05-12 12:08:56,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-05-12 12:08:56,996 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 325 transitions, 4562 flow [2024-05-12 12:08:56,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:08:56,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:56,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:56,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 12:08:56,996 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:56,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2009839893, now seen corresponding path program 5 times [2024-05-12 12:08:56,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:56,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746697922] [2024-05-12 12:08:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:56,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746697922] [2024-05-12 12:09:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746697922] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:01,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841024121] [2024-05-12 12:09:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:01,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:01,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:01,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:01,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 325 transitions, 4562 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:01,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:01,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:01,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:02,716 INFO L124 PetriNetUnfolderBase]: 1708/2935 cut-off events. [2024-05-12 12:09:02,717 INFO L125 PetriNetUnfolderBase]: For 58533/58566 co-relation queries the response was YES. [2024-05-12 12:09:02,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 2935 events. 1708/2935 cut-off events. For 58533/58566 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17095 event pairs, 161 based on Foata normal form. 10/2929 useless extension candidates. Maximal degree in co-relation 19926. Up to 2220 conditions per place. [2024-05-12 12:09:02,746 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 281 selfloop transitions, 75 changer transitions 0/363 dead transitions. [2024-05-12 12:09:02,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 363 transitions, 5654 flow [2024-05-12 12:09:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:09:02,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:09:02,749 INFO L175 Difference]: Start difference. First operand has 213 places, 325 transitions, 4562 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:09:02,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 363 transitions, 5654 flow [2024-05-12 12:09:02,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 363 transitions, 5474 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-05-12 12:09:02,977 INFO L231 Difference]: Finished difference. Result has 215 places, 330 transitions, 4665 flow [2024-05-12 12:09:02,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4665, PETRI_PLACES=215, PETRI_TRANSITIONS=330} [2024-05-12 12:09:02,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-05-12 12:09:02,978 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 330 transitions, 4665 flow [2024-05-12 12:09:02,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:02,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:02,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:02,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 12:09:02,979 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:02,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:02,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2009655319, now seen corresponding path program 4 times [2024-05-12 12:09:02,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:02,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565852284] [2024-05-12 12:09:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:02,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:07,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565852284] [2024-05-12 12:09:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565852284] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:07,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:07,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:07,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870191336] [2024-05-12 12:09:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:07,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:07,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:07,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 330 transitions, 4665 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:07,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:07,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:07,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:08,314 INFO L124 PetriNetUnfolderBase]: 1776/3039 cut-off events. [2024-05-12 12:09:08,315 INFO L125 PetriNetUnfolderBase]: For 64855/64888 co-relation queries the response was YES. [2024-05-12 12:09:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20870 conditions, 3039 events. 1776/3039 cut-off events. For 64855/64888 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17843 event pairs, 172 based on Foata normal form. 11/3034 useless extension candidates. Maximal degree in co-relation 20765. Up to 1680 conditions per place. [2024-05-12 12:09:08,345 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 259 selfloop transitions, 126 changer transitions 0/392 dead transitions. [2024-05-12 12:09:08,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 392 transitions, 6138 flow [2024-05-12 12:09:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-05-12 12:09:08,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-05-12 12:09:08,347 INFO L175 Difference]: Start difference. First operand has 215 places, 330 transitions, 4665 flow. Second operand 9 states and 164 transitions. [2024-05-12 12:09:08,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 392 transitions, 6138 flow [2024-05-12 12:09:08,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 392 transitions, 5986 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-05-12 12:09:08,615 INFO L231 Difference]: Finished difference. Result has 222 places, 348 transitions, 5190 flow [2024-05-12 12:09:08,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5190, PETRI_PLACES=222, PETRI_TRANSITIONS=348} [2024-05-12 12:09:08,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-05-12 12:09:08,616 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 348 transitions, 5190 flow [2024-05-12 12:09:08,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:08,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:08,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 12:09:08,616 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2003406153, now seen corresponding path program 6 times [2024-05-12 12:09:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266313943] [2024-05-12 12:09:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266313943] [2024-05-12 12:09:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266313943] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28156755] [2024-05-12 12:09:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:13,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:13,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 348 transitions, 5190 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:13,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:13,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:13,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:14,454 INFO L124 PetriNetUnfolderBase]: 1773/3034 cut-off events. [2024-05-12 12:09:14,454 INFO L125 PetriNetUnfolderBase]: For 65453/65486 co-relation queries the response was YES. [2024-05-12 12:09:14,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21789 conditions, 3034 events. 1773/3034 cut-off events. For 65453/65486 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17742 event pairs, 173 based on Foata normal form. 10/3028 useless extension candidates. Maximal degree in co-relation 21680. Up to 2446 conditions per place. [2024-05-12 12:09:14,487 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 299 selfloop transitions, 73 changer transitions 0/379 dead transitions. [2024-05-12 12:09:14,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 379 transitions, 6118 flow [2024-05-12 12:09:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:09:14,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:09:14,489 INFO L175 Difference]: Start difference. First operand has 222 places, 348 transitions, 5190 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:09:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 379 transitions, 6118 flow [2024-05-12 12:09:14,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 379 transitions, 5956 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 12:09:14,743 INFO L231 Difference]: Finished difference. Result has 225 places, 348 transitions, 5179 flow [2024-05-12 12:09:14,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5028, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5179, PETRI_PLACES=225, PETRI_TRANSITIONS=348} [2024-05-12 12:09:14,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-05-12 12:09:14,744 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 348 transitions, 5179 flow [2024-05-12 12:09:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:14,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:14,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:14,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 12:09:14,745 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2003399209, now seen corresponding path program 5 times [2024-05-12 12:09:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958507090] [2024-05-12 12:09:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958507090] [2024-05-12 12:09:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958507090] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547823613] [2024-05-12 12:09:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:18,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:18,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 348 transitions, 5179 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:19,600 INFO L124 PetriNetUnfolderBase]: 1766/3023 cut-off events. [2024-05-12 12:09:19,600 INFO L125 PetriNetUnfolderBase]: For 65168/65201 co-relation queries the response was YES. [2024-05-12 12:09:19,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21354 conditions, 3023 events. 1766/3023 cut-off events. For 65168/65201 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17683 event pairs, 177 based on Foata normal form. 11/3018 useless extension candidates. Maximal degree in co-relation 21244. Up to 1672 conditions per place. [2024-05-12 12:09:19,632 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 256 selfloop transitions, 129 changer transitions 0/392 dead transitions. [2024-05-12 12:09:19,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 392 transitions, 6395 flow [2024-05-12 12:09:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 12:09:19,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-05-12 12:09:19,634 INFO L175 Difference]: Start difference. First operand has 225 places, 348 transitions, 5179 flow. Second operand 9 states and 168 transitions. [2024-05-12 12:09:19,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 392 transitions, 6395 flow [2024-05-12 12:09:19,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 392 transitions, 6228 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-05-12 12:09:19,874 INFO L231 Difference]: Finished difference. Result has 227 places, 348 transitions, 5278 flow [2024-05-12 12:09:19,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5012, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5278, PETRI_PLACES=227, PETRI_TRANSITIONS=348} [2024-05-12 12:09:19,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-05-12 12:09:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 348 transitions, 5278 flow [2024-05-12 12:09:19,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:19,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:19,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 12:09:19,875 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:19,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -936251601, now seen corresponding path program 1 times [2024-05-12 12:09:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833343953] [2024-05-12 12:09:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:24,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833343953] [2024-05-12 12:09:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833343953] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:24,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:24,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:09:24,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879002061] [2024-05-12 12:09:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:24,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:09:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:24,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:09:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:09:24,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:24,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 348 transitions, 5278 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:24,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:24,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:24,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:25,615 INFO L124 PetriNetUnfolderBase]: 1849/3150 cut-off events. [2024-05-12 12:09:25,615 INFO L125 PetriNetUnfolderBase]: For 73829/73862 co-relation queries the response was YES. [2024-05-12 12:09:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22794 conditions, 3150 events. 1849/3150 cut-off events. For 73829/73862 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18439 event pairs, 172 based on Foata normal form. 11/3145 useless extension candidates. Maximal degree in co-relation 22683. Up to 1955 conditions per place. [2024-05-12 12:09:25,650 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 260 selfloop transitions, 147 changer transitions 0/414 dead transitions. [2024-05-12 12:09:25,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 414 transitions, 7116 flow [2024-05-12 12:09:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:09:25,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:09:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-05-12 12:09:25,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-05-12 12:09:25,652 INFO L175 Difference]: Start difference. First operand has 227 places, 348 transitions, 5278 flow. Second operand 10 states and 186 transitions. [2024-05-12 12:09:25,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 414 transitions, 7116 flow [2024-05-12 12:09:25,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 414 transitions, 6885 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 12:09:25,956 INFO L231 Difference]: Finished difference. Result has 231 places, 362 transitions, 5634 flow [2024-05-12 12:09:25,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5634, PETRI_PLACES=231, PETRI_TRANSITIONS=362} [2024-05-12 12:09:25,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-05-12 12:09:25,957 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 362 transitions, 5634 flow [2024-05-12 12:09:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:25,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:25,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 12:09:25,958 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:25,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash -353244389, now seen corresponding path program 6 times [2024-05-12 12:09:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:25,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076031236] [2024-05-12 12:09:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:30,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:30,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076031236] [2024-05-12 12:09:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076031236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:09:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796282780] [2024-05-12 12:09:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:09:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:09:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:09:30,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:30,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 362 transitions, 5634 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:30,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:30,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:30,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:31,297 INFO L124 PetriNetUnfolderBase]: 1950/3302 cut-off events. [2024-05-12 12:09:31,297 INFO L125 PetriNetUnfolderBase]: For 85070/85103 co-relation queries the response was YES. [2024-05-12 12:09:31,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 3302 events. 1950/3302 cut-off events. For 85070/85103 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19425 event pairs, 194 based on Foata normal form. 12/3298 useless extension candidates. Maximal degree in co-relation 24160. Up to 1791 conditions per place. [2024-05-12 12:09:31,335 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 270 selfloop transitions, 151 changer transitions 0/428 dead transitions. [2024-05-12 12:09:31,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 428 transitions, 7464 flow [2024-05-12 12:09:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:09:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:09:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-05-12 12:09:31,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:09:31,336 INFO L175 Difference]: Start difference. First operand has 231 places, 362 transitions, 5634 flow. Second operand 10 states and 190 transitions. [2024-05-12 12:09:31,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 428 transitions, 7464 flow [2024-05-12 12:09:31,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 428 transitions, 7072 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-05-12 12:09:31,687 INFO L231 Difference]: Finished difference. Result has 235 places, 376 transitions, 5852 flow [2024-05-12 12:09:31,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5260, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5852, PETRI_PLACES=235, PETRI_TRANSITIONS=376} [2024-05-12 12:09:31,687 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-05-12 12:09:31,687 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 376 transitions, 5852 flow [2024-05-12 12:09:31,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:31,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:31,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 12:09:31,688 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1221590791, now seen corresponding path program 7 times [2024-05-12 12:09:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457857668] [2024-05-12 12:09:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457857668] [2024-05-12 12:09:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457857668] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653477133] [2024-05-12 12:09:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:35,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:35,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 376 transitions, 5852 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:35,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:35,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:35,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:36,985 INFO L124 PetriNetUnfolderBase]: 1980/3348 cut-off events. [2024-05-12 12:09:36,985 INFO L125 PetriNetUnfolderBase]: For 85775/85808 co-relation queries the response was YES. [2024-05-12 12:09:37,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24591 conditions, 3348 events. 1980/3348 cut-off events. For 85775/85808 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19782 event pairs, 178 based on Foata normal form. 11/3343 useless extension candidates. Maximal degree in co-relation 24477. Up to 1803 conditions per place. [2024-05-12 12:09:37,026 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 266 selfloop transitions, 151 changer transitions 0/424 dead transitions. [2024-05-12 12:09:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 424 transitions, 7304 flow [2024-05-12 12:09:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-05-12 12:09:37,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-05-12 12:09:37,027 INFO L175 Difference]: Start difference. First operand has 235 places, 376 transitions, 5852 flow. Second operand 9 states and 170 transitions. [2024-05-12 12:09:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 424 transitions, 7304 flow [2024-05-12 12:09:37,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 424 transitions, 6942 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 12:09:37,407 INFO L231 Difference]: Finished difference. Result has 238 places, 380 transitions, 5868 flow [2024-05-12 12:09:37,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5494, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5868, PETRI_PLACES=238, PETRI_TRANSITIONS=380} [2024-05-12 12:09:37,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-05-12 12:09:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 380 transitions, 5868 flow [2024-05-12 12:09:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:09:37,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:37,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 12:09:37,409 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:37,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash -926132271, now seen corresponding path program 2 times [2024-05-12 12:09:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:37,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501376001] [2024-05-12 12:09:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:42,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:42,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501376001] [2024-05-12 12:09:42,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501376001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:42,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:42,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:09:42,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335070827] [2024-05-12 12:09:42,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:09:42,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:09:42,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:09:42,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:42,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 380 transitions, 5868 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:43,941 INFO L124 PetriNetUnfolderBase]: 1983/3349 cut-off events. [2024-05-12 12:09:43,942 INFO L125 PetriNetUnfolderBase]: For 85446/85497 co-relation queries the response was YES. [2024-05-12 12:09:43,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24741 conditions, 3349 events. 1983/3349 cut-off events. For 85446/85497 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19823 event pairs, 200 based on Foata normal form. 21/3357 useless extension candidates. Maximal degree in co-relation 24626. Up to 2844 conditions per place. [2024-05-12 12:09:43,978 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 338 selfloop transitions, 88 changer transitions 0/433 dead transitions. [2024-05-12 12:09:43,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 433 transitions, 7172 flow [2024-05-12 12:09:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:09:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:09:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 12:09:43,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-05-12 12:09:43,979 INFO L175 Difference]: Start difference. First operand has 238 places, 380 transitions, 5868 flow. Second operand 10 states and 172 transitions. [2024-05-12 12:09:43,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 433 transitions, 7172 flow [2024-05-12 12:09:44,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 433 transitions, 6821 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 12:09:44,348 INFO L231 Difference]: Finished difference. Result has 242 places, 385 transitions, 5837 flow [2024-05-12 12:09:44,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5837, PETRI_PLACES=242, PETRI_TRANSITIONS=385} [2024-05-12 12:09:44,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 200 predicate places. [2024-05-12 12:09:44,349 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 385 transitions, 5837 flow [2024-05-12 12:09:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:44,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:44,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:44,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 12:09:44,350 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:44,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 572341917, now seen corresponding path program 3 times [2024-05-12 12:09:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671532178] [2024-05-12 12:09:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:48,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:48,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671532178] [2024-05-12 12:09:48,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671532178] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:48,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:48,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:09:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972207859] [2024-05-12 12:09:48,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:09:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:09:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:09:48,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 385 transitions, 5837 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:48,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:49,866 INFO L124 PetriNetUnfolderBase]: 1994/3377 cut-off events. [2024-05-12 12:09:49,866 INFO L125 PetriNetUnfolderBase]: For 83217/83268 co-relation queries the response was YES. [2024-05-12 12:09:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24479 conditions, 3377 events. 1994/3377 cut-off events. For 83217/83268 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20018 event pairs, 198 based on Foata normal form. 21/3385 useless extension candidates. Maximal degree in co-relation 24363. Up to 2813 conditions per place. [2024-05-12 12:09:49,903 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 336 selfloop transitions, 100 changer transitions 0/443 dead transitions. [2024-05-12 12:09:49,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 443 transitions, 7177 flow [2024-05-12 12:09:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:09:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:09:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-05-12 12:09:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-05-12 12:09:49,905 INFO L175 Difference]: Start difference. First operand has 242 places, 385 transitions, 5837 flow. Second operand 11 states and 189 transitions. [2024-05-12 12:09:49,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 443 transitions, 7177 flow [2024-05-12 12:09:50,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 443 transitions, 6956 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-05-12 12:09:50,293 INFO L231 Difference]: Finished difference. Result has 246 places, 390 transitions, 5948 flow [2024-05-12 12:09:50,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5948, PETRI_PLACES=246, PETRI_TRANSITIONS=390} [2024-05-12 12:09:50,293 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-05-12 12:09:50,294 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 390 transitions, 5948 flow [2024-05-12 12:09:50,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:50,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:50,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:50,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 12:09:50,294 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:50,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash -926132581, now seen corresponding path program 8 times [2024-05-12 12:09:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:50,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424074942] [2024-05-12 12:09:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:50,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:55,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424074942] [2024-05-12 12:09:55,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424074942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:55,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:55,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:09:55,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341428647] [2024-05-12 12:09:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:55,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:09:55,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:09:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:09:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:55,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 390 transitions, 5948 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:55,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:55,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:55,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:56,375 INFO L124 PetriNetUnfolderBase]: 1990/3365 cut-off events. [2024-05-12 12:09:56,375 INFO L125 PetriNetUnfolderBase]: For 83923/83956 co-relation queries the response was YES. [2024-05-12 12:09:56,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24358 conditions, 3365 events. 1990/3365 cut-off events. For 83923/83956 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19824 event pairs, 206 based on Foata normal form. 12/3361 useless extension candidates. Maximal degree in co-relation 24241. Up to 1820 conditions per place. [2024-05-12 12:09:56,413 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 264 selfloop transitions, 168 changer transitions 0/439 dead transitions. [2024-05-12 12:09:56,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 439 transitions, 7439 flow [2024-05-12 12:09:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:09:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:09:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-05-12 12:09:56,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-05-12 12:09:56,415 INFO L175 Difference]: Start difference. First operand has 246 places, 390 transitions, 5948 flow. Second operand 10 states and 187 transitions. [2024-05-12 12:09:56,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 439 transitions, 7439 flow [2024-05-12 12:09:56,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 439 transitions, 7152 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-05-12 12:09:56,807 INFO L231 Difference]: Finished difference. Result has 248 places, 391 transitions, 6060 flow [2024-05-12 12:09:56,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5661, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6060, PETRI_PLACES=248, PETRI_TRANSITIONS=391} [2024-05-12 12:09:56,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-05-12 12:09:56,808 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 391 transitions, 6060 flow [2024-05-12 12:09:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:09:56,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:56,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 12:09:56,808 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:56,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash -936260281, now seen corresponding path program 9 times [2024-05-12 12:09:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:56,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399338450] [2024-05-12 12:09:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:00,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:00,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399338450] [2024-05-12 12:10:00,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399338450] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:00,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:00,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339974175] [2024-05-12 12:10:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:00,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:00,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 391 transitions, 6060 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:00,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:00,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:00,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:01,833 INFO L124 PetriNetUnfolderBase]: 1982/3352 cut-off events. [2024-05-12 12:10:01,833 INFO L125 PetriNetUnfolderBase]: For 82248/82281 co-relation queries the response was YES. [2024-05-12 12:10:01,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24522 conditions, 3352 events. 1982/3352 cut-off events. For 82248/82281 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19763 event pairs, 184 based on Foata normal form. 11/3347 useless extension candidates. Maximal degree in co-relation 24403. Up to 1815 conditions per place. [2024-05-12 12:10:01,874 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 271 selfloop transitions, 164 changer transitions 0/442 dead transitions. [2024-05-12 12:10:01,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 442 transitions, 7550 flow [2024-05-12 12:10:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:10:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:10:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-05-12 12:10:01,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-05-12 12:10:01,885 INFO L175 Difference]: Start difference. First operand has 248 places, 391 transitions, 6060 flow. Second operand 10 states and 188 transitions. [2024-05-12 12:10:01,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 442 transitions, 7550 flow [2024-05-12 12:10:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 442 transitions, 7161 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-05-12 12:10:02,259 INFO L231 Difference]: Finished difference. Result has 250 places, 391 transitions, 6006 flow [2024-05-12 12:10:02,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5671, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6006, PETRI_PLACES=250, PETRI_TRANSITIONS=391} [2024-05-12 12:10:02,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-05-12 12:10:02,260 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 391 transitions, 6006 flow [2024-05-12 12:10:02,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:02,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:02,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 12:10:02,260 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:02,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1221360151, now seen corresponding path program 10 times [2024-05-12 12:10:02,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469772602] [2024-05-12 12:10:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469772602] [2024-05-12 12:10:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469772602] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298276346] [2024-05-12 12:10:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:05,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:06,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:06,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 391 transitions, 6006 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:06,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:06,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:06,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:07,150 INFO L124 PetriNetUnfolderBase]: 2001/3381 cut-off events. [2024-05-12 12:10:07,151 INFO L125 PetriNetUnfolderBase]: For 82424/82457 co-relation queries the response was YES. [2024-05-12 12:10:07,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3381 events. 2001/3381 cut-off events. For 82424/82457 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19960 event pairs, 186 based on Foata normal form. 11/3376 useless extension candidates. Maximal degree in co-relation 24523. Up to 1821 conditions per place. [2024-05-12 12:10:07,189 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 288 selfloop transitions, 146 changer transitions 0/441 dead transitions. [2024-05-12 12:10:07,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 441 transitions, 7634 flow [2024-05-12 12:10:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-05-12 12:10:07,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-05-12 12:10:07,191 INFO L175 Difference]: Start difference. First operand has 250 places, 391 transitions, 6006 flow. Second operand 9 states and 172 transitions. [2024-05-12 12:10:07,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 441 transitions, 7634 flow [2024-05-12 12:10:07,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 441 transitions, 7338 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 12:10:07,542 INFO L231 Difference]: Finished difference. Result has 252 places, 395 transitions, 6076 flow [2024-05-12 12:10:07,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6076, PETRI_PLACES=252, PETRI_TRANSITIONS=395} [2024-05-12 12:10:07,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-05-12 12:10:07,542 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 395 transitions, 6076 flow [2024-05-12 12:10:07,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:07,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:07,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 12:10:07,543 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:07,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1221351781, now seen corresponding path program 11 times [2024-05-12 12:10:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984143010] [2024-05-12 12:10:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:11,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:11,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984143010] [2024-05-12 12:10:11,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984143010] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:11,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:11,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170428858] [2024-05-12 12:10:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:11,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:11,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:11,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:11,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:11,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 395 transitions, 6076 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:11,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:11,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:11,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:12,968 INFO L124 PetriNetUnfolderBase]: 1995/3373 cut-off events. [2024-05-12 12:10:12,969 INFO L125 PetriNetUnfolderBase]: For 79876/79909 co-relation queries the response was YES. [2024-05-12 12:10:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24385 conditions, 3373 events. 1995/3373 cut-off events. For 79876/79909 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19970 event pairs, 185 based on Foata normal form. 12/3369 useless extension candidates. Maximal degree in co-relation 24264. Up to 1820 conditions per place. [2024-05-12 12:10:13,009 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 286 selfloop transitions, 147 changer transitions 0/440 dead transitions. [2024-05-12 12:10:13,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 440 transitions, 7534 flow [2024-05-12 12:10:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-05-12 12:10:13,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-05-12 12:10:13,011 INFO L175 Difference]: Start difference. First operand has 252 places, 395 transitions, 6076 flow. Second operand 9 states and 170 transitions. [2024-05-12 12:10:13,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 440 transitions, 7534 flow [2024-05-12 12:10:13,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 440 transitions, 7077 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-05-12 12:10:13,405 INFO L231 Difference]: Finished difference. Result has 252 places, 395 transitions, 5924 flow [2024-05-12 12:10:13,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5924, PETRI_PLACES=252, PETRI_TRANSITIONS=395} [2024-05-12 12:10:13,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-05-12 12:10:13,406 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 395 transitions, 5924 flow [2024-05-12 12:10:13,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:13,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:13,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:13,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 12:10:13,407 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:13,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2003156221, now seen corresponding path program 4 times [2024-05-12 12:10:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147256594] [2024-05-12 12:10:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147256594] [2024-05-12 12:10:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147256594] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:17,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:17,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789852069] [2024-05-12 12:10:17,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:17,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:17,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:17,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:17,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:17,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 395 transitions, 5924 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:17,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:17,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:17,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:18,550 INFO L124 PetriNetUnfolderBase]: 1987/3360 cut-off events. [2024-05-12 12:10:18,550 INFO L125 PetriNetUnfolderBase]: For 72819/72852 co-relation queries the response was YES. [2024-05-12 12:10:18,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23911 conditions, 3360 events. 1987/3360 cut-off events. For 72819/72852 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19830 event pairs, 179 based on Foata normal form. 11/3355 useless extension candidates. Maximal degree in co-relation 23791. Up to 2107 conditions per place. [2024-05-12 12:10:18,589 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 283 selfloop transitions, 148 changer transitions 0/438 dead transitions. [2024-05-12 12:10:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 438 transitions, 7201 flow [2024-05-12 12:10:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-05-12 12:10:18,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-05-12 12:10:18,590 INFO L175 Difference]: Start difference. First operand has 252 places, 395 transitions, 5924 flow. Second operand 9 states and 165 transitions. [2024-05-12 12:10:18,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 438 transitions, 7201 flow [2024-05-12 12:10:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 438 transitions, 6855 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-05-12 12:10:18,941 INFO L231 Difference]: Finished difference. Result has 254 places, 396 transitions, 5920 flow [2024-05-12 12:10:18,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5593, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5920, PETRI_PLACES=254, PETRI_TRANSITIONS=396} [2024-05-12 12:10:18,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-05-12 12:10:18,942 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 396 transitions, 5920 flow [2024-05-12 12:10:18,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-05-12 12:10:18,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:18,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 12:10:18,942 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:18,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -223773247, now seen corresponding path program 1 times [2024-05-12 12:10:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711212874] [2024-05-12 12:10:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711212874] [2024-05-12 12:10:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711212874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:23,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494324796] [2024-05-12 12:10:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:23,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:23,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 396 transitions, 5920 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:23,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:23,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:23,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:24,972 INFO L124 PetriNetUnfolderBase]: 2062/3495 cut-off events. [2024-05-12 12:10:24,972 INFO L125 PetriNetUnfolderBase]: For 74624/74659 co-relation queries the response was YES. [2024-05-12 12:10:25,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3495 events. 2062/3495 cut-off events. For 74624/74659 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20876 event pairs, 241 based on Foata normal form. 18/3502 useless extension candidates. Maximal degree in co-relation 24522. Up to 3045 conditions per place. [2024-05-12 12:10:25,017 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 398 selfloop transitions, 50 changer transitions 0/455 dead transitions. [2024-05-12 12:10:25,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 455 transitions, 7296 flow [2024-05-12 12:10:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:10:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:10:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 12:10:25,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-05-12 12:10:25,018 INFO L175 Difference]: Start difference. First operand has 254 places, 396 transitions, 5920 flow. Second operand 10 states and 167 transitions. [2024-05-12 12:10:25,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 455 transitions, 7296 flow [2024-05-12 12:10:25,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 455 transitions, 6960 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 12:10:25,441 INFO L231 Difference]: Finished difference. Result has 261 places, 418 transitions, 6090 flow [2024-05-12 12:10:25,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6090, PETRI_PLACES=261, PETRI_TRANSITIONS=418} [2024-05-12 12:10:25,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-05-12 12:10:25,442 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 418 transitions, 6090 flow [2024-05-12 12:10:25,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:25,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:25,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:25,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 12:10:25,442 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:25,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -639202973, now seen corresponding path program 2 times [2024-05-12 12:10:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121055120] [2024-05-12 12:10:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:29,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121055120] [2024-05-12 12:10:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121055120] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:29,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:29,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:29,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104462490] [2024-05-12 12:10:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:29,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:29,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:29,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 418 transitions, 6090 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:29,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:29,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:29,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:30,854 INFO L124 PetriNetUnfolderBase]: 2090/3537 cut-off events. [2024-05-12 12:10:30,854 INFO L125 PetriNetUnfolderBase]: For 76227/76282 co-relation queries the response was YES. [2024-05-12 12:10:30,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24948 conditions, 3537 events. 2090/3537 cut-off events. For 76227/76282 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21166 event pairs, 167 based on Foata normal form. 22/3546 useless extension candidates. Maximal degree in co-relation 24822. Up to 2980 conditions per place. [2024-05-12 12:10:30,894 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 388 selfloop transitions, 62 changer transitions 0/457 dead transitions. [2024-05-12 12:10:30,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 457 transitions, 7298 flow [2024-05-12 12:10:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-05-12 12:10:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-05-12 12:10:30,896 INFO L175 Difference]: Start difference. First operand has 261 places, 418 transitions, 6090 flow. Second operand 9 states and 149 transitions. [2024-05-12 12:10:30,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 457 transitions, 7298 flow [2024-05-12 12:10:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 457 transitions, 7145 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-05-12 12:10:31,278 INFO L231 Difference]: Finished difference. Result has 270 places, 426 transitions, 6305 flow [2024-05-12 12:10:31,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5937, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6305, PETRI_PLACES=270, PETRI_TRANSITIONS=426} [2024-05-12 12:10:31,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-05-12 12:10:31,278 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 426 transitions, 6305 flow [2024-05-12 12:10:31,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:31,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:31,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:31,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 12:10:31,279 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:31,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -580216793, now seen corresponding path program 3 times [2024-05-12 12:10:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:31,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811027570] [2024-05-12 12:10:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811027570] [2024-05-12 12:10:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811027570] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:35,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513682963] [2024-05-12 12:10:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:35,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:35,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:35,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 426 transitions, 6305 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:35,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:35,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:37,133 INFO L124 PetriNetUnfolderBase]: 2141/3625 cut-off events. [2024-05-12 12:10:37,134 INFO L125 PetriNetUnfolderBase]: For 86410/86428 co-relation queries the response was YES. [2024-05-12 12:10:37,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26077 conditions, 3625 events. 2141/3625 cut-off events. For 86410/86428 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21860 event pairs, 285 based on Foata normal form. 14/3628 useless extension candidates. Maximal degree in co-relation 25946. Up to 3023 conditions per place. [2024-05-12 12:10:37,171 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 402 selfloop transitions, 59 changer transitions 0/468 dead transitions. [2024-05-12 12:10:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 468 transitions, 7665 flow [2024-05-12 12:10:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 12:10:37,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 12:10:37,173 INFO L175 Difference]: Start difference. First operand has 270 places, 426 transitions, 6305 flow. Second operand 9 states and 157 transitions. [2024-05-12 12:10:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 468 transitions, 7665 flow [2024-05-12 12:10:37,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 468 transitions, 7494 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-05-12 12:10:37,650 INFO L231 Difference]: Finished difference. Result has 276 places, 432 transitions, 6411 flow [2024-05-12 12:10:37,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6411, PETRI_PLACES=276, PETRI_TRANSITIONS=432} [2024-05-12 12:10:37,651 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-05-12 12:10:37,651 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 432 transitions, 6411 flow [2024-05-12 12:10:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:37,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:37,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 12:10:37,651 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:37,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -580072643, now seen corresponding path program 4 times [2024-05-12 12:10:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:37,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445977400] [2024-05-12 12:10:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:37,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:41,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445977400] [2024-05-12 12:10:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445977400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:41,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:41,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258810421] [2024-05-12 12:10:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:41,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:42,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:42,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 432 transitions, 6411 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:42,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:42,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:42,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:43,341 INFO L124 PetriNetUnfolderBase]: 2157/3653 cut-off events. [2024-05-12 12:10:43,342 INFO L125 PetriNetUnfolderBase]: For 86571/86589 co-relation queries the response was YES. [2024-05-12 12:10:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26274 conditions, 3653 events. 2157/3653 cut-off events. For 86571/86589 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22061 event pairs, 291 based on Foata normal form. 14/3656 useless extension candidates. Maximal degree in co-relation 26141. Up to 3110 conditions per place. [2024-05-12 12:10:43,394 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 406 selfloop transitions, 58 changer transitions 0/471 dead transitions. [2024-05-12 12:10:43,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 471 transitions, 7721 flow [2024-05-12 12:10:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 12:10:43,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 12:10:43,399 INFO L175 Difference]: Start difference. First operand has 276 places, 432 transitions, 6411 flow. Second operand 9 states and 156 transitions. [2024-05-12 12:10:43,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 471 transitions, 7721 flow [2024-05-12 12:10:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 471 transitions, 7549 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-05-12 12:10:43,911 INFO L231 Difference]: Finished difference. Result has 280 places, 435 transitions, 6434 flow [2024-05-12 12:10:43,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6267, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6434, PETRI_PLACES=280, PETRI_TRANSITIONS=435} [2024-05-12 12:10:43,912 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-05-12 12:10:43,912 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 435 transitions, 6434 flow [2024-05-12 12:10:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:43,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:43,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:43,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 12:10:43,913 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:43,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash -580067063, now seen corresponding path program 5 times [2024-05-12 12:10:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976526212] [2024-05-12 12:10:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:48,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:48,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976526212] [2024-05-12 12:10:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976526212] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:48,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268725550] [2024-05-12 12:10:48,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:48,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:48,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:48,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:48,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 435 transitions, 6434 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:48,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:48,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:48,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:49,543 INFO L124 PetriNetUnfolderBase]: 2151/3643 cut-off events. [2024-05-12 12:10:49,544 INFO L125 PetriNetUnfolderBase]: For 83552/83570 co-relation queries the response was YES. [2024-05-12 12:10:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25952 conditions, 3643 events. 2151/3643 cut-off events. For 83552/83570 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21951 event pairs, 296 based on Foata normal form. 16/3648 useless extension candidates. Maximal degree in co-relation 25817. Up to 3182 conditions per place. [2024-05-12 12:10:49,590 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 409 selfloop transitions, 56 changer transitions 0/472 dead transitions. [2024-05-12 12:10:49,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 472 transitions, 7584 flow [2024-05-12 12:10:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 12:10:49,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-05-12 12:10:49,591 INFO L175 Difference]: Start difference. First operand has 280 places, 435 transitions, 6434 flow. Second operand 9 states and 154 transitions. [2024-05-12 12:10:49,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 472 transitions, 7584 flow [2024-05-12 12:10:50,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 472 transitions, 7422 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 12:10:50,076 INFO L231 Difference]: Finished difference. Result has 282 places, 435 transitions, 6391 flow [2024-05-12 12:10:50,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6272, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6391, PETRI_PLACES=282, PETRI_TRANSITIONS=435} [2024-05-12 12:10:50,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-05-12 12:10:50,077 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 435 transitions, 6391 flow [2024-05-12 12:10:50,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:50,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:50,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 12:10:50,078 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:50,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -580066846, now seen corresponding path program 1 times [2024-05-12 12:10:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:50,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462800360] [2024-05-12 12:10:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462800360] [2024-05-12 12:10:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462800360] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:54,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41927556] [2024-05-12 12:10:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:54,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:54,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 435 transitions, 6391 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:54,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:54,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:54,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:55,604 INFO L124 PetriNetUnfolderBase]: 2151/3643 cut-off events. [2024-05-12 12:10:55,604 INFO L125 PetriNetUnfolderBase]: For 77613/77631 co-relation queries the response was YES. [2024-05-12 12:10:55,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25878 conditions, 3643 events. 2151/3643 cut-off events. For 77613/77631 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21958 event pairs, 295 based on Foata normal form. 13/3645 useless extension candidates. Maximal degree in co-relation 25742. Up to 3180 conditions per place. [2024-05-12 12:10:55,643 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 409 selfloop transitions, 61 changer transitions 0/477 dead transitions. [2024-05-12 12:10:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 477 transitions, 7641 flow [2024-05-12 12:10:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 12:10:55,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-05-12 12:10:55,645 INFO L175 Difference]: Start difference. First operand has 282 places, 435 transitions, 6391 flow. Second operand 9 states and 155 transitions. [2024-05-12 12:10:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 477 transitions, 7641 flow [2024-05-12 12:10:56,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 477 transitions, 7496 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 12:10:56,166 INFO L231 Difference]: Finished difference. Result has 283 places, 439 transitions, 6466 flow [2024-05-12 12:10:56,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6254, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6466, PETRI_PLACES=283, PETRI_TRANSITIONS=439} [2024-05-12 12:10:56,166 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-05-12 12:10:56,167 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 439 transitions, 6466 flow [2024-05-12 12:10:56,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:10:56,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:56,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:56,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 12:10:56,167 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:56,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1968689975, now seen corresponding path program 6 times [2024-05-12 12:10:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:56,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900633287] [2024-05-12 12:10:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:00,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900633287] [2024-05-12 12:11:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900633287] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:00,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:00,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:00,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495426203] [2024-05-12 12:11:00,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:00,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:00,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:00,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 439 transitions, 6466 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:00,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:00,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:02,013 INFO L124 PetriNetUnfolderBase]: 2169/3670 cut-off events. [2024-05-12 12:11:02,014 INFO L125 PetriNetUnfolderBase]: For 81153/81156 co-relation queries the response was YES. [2024-05-12 12:11:02,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26119 conditions, 3670 events. 2169/3670 cut-off events. For 81153/81156 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22160 event pairs, 214 based on Foata normal form. 2/3656 useless extension candidates. Maximal degree in co-relation 25982. Up to 2828 conditions per place. [2024-05-12 12:11:02,059 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 352 selfloop transitions, 122 changer transitions 0/481 dead transitions. [2024-05-12 12:11:02,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 481 transitions, 7724 flow [2024-05-12 12:11:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 12:11:02,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 12:11:02,060 INFO L175 Difference]: Start difference. First operand has 283 places, 439 transitions, 6466 flow. Second operand 9 states and 159 transitions. [2024-05-12 12:11:02,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 481 transitions, 7724 flow [2024-05-12 12:11:02,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 481 transitions, 7588 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 12:11:02,516 INFO L231 Difference]: Finished difference. Result has 285 places, 441 transitions, 6637 flow [2024-05-12 12:11:02,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6637, PETRI_PLACES=285, PETRI_TRANSITIONS=441} [2024-05-12 12:11:02,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-05-12 12:11:02,517 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 441 transitions, 6637 flow [2024-05-12 12:11:02,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:02,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 12:11:02,518 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:02,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1176010479, now seen corresponding path program 7 times [2024-05-12 12:11:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519404207] [2024-05-12 12:11:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:06,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:06,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519404207] [2024-05-12 12:11:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519404207] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:06,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:06,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:11:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982969019] [2024-05-12 12:11:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:11:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:11:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:11:06,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:06,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 441 transitions, 6637 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:06,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:06,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:06,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:07,856 INFO L124 PetriNetUnfolderBase]: 2219/3756 cut-off events. [2024-05-12 12:11:07,856 INFO L125 PetriNetUnfolderBase]: For 91922/91925 co-relation queries the response was YES. [2024-05-12 12:11:07,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 3756 events. 2219/3756 cut-off events. For 91922/91925 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 22836 event pairs, 211 based on Foata normal form. 2/3742 useless extension candidates. Maximal degree in co-relation 27137. Up to 2830 conditions per place. [2024-05-12 12:11:07,903 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 360 selfloop transitions, 120 changer transitions 0/487 dead transitions. [2024-05-12 12:11:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 487 transitions, 8107 flow [2024-05-12 12:11:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:11:07,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:11:07,905 INFO L175 Difference]: Start difference. First operand has 285 places, 441 transitions, 6637 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:11:07,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 487 transitions, 8107 flow [2024-05-12 12:11:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 487 transitions, 7822 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-05-12 12:11:08,521 INFO L231 Difference]: Finished difference. Result has 287 places, 447 transitions, 6756 flow [2024-05-12 12:11:08,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6756, PETRI_PLACES=287, PETRI_TRANSITIONS=447} [2024-05-12 12:11:08,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-05-12 12:11:08,522 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 447 transitions, 6756 flow [2024-05-12 12:11:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:08,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 12:11:08,523 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:08,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:08,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1975839815, now seen corresponding path program 8 times [2024-05-12 12:11:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:08,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571478580] [2024-05-12 12:11:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:12,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:12,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571478580] [2024-05-12 12:11:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571478580] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:12,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:12,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:11:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653137418] [2024-05-12 12:11:12,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:11:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:11:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:11:12,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:12,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 447 transitions, 6756 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:12,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:12,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:12,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:14,057 INFO L124 PetriNetUnfolderBase]: 2213/3746 cut-off events. [2024-05-12 12:11:14,057 INFO L125 PetriNetUnfolderBase]: For 90326/90329 co-relation queries the response was YES. [2024-05-12 12:11:14,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27006 conditions, 3746 events. 2213/3746 cut-off events. For 90326/90329 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22773 event pairs, 214 based on Foata normal form. 4/3734 useless extension candidates. Maximal degree in co-relation 26867. Up to 2886 conditions per place. [2024-05-12 12:11:14,100 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 366 selfloop transitions, 115 changer transitions 0/488 dead transitions. [2024-05-12 12:11:14,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 488 transitions, 7980 flow [2024-05-12 12:11:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 12:11:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 12:11:14,102 INFO L175 Difference]: Start difference. First operand has 287 places, 447 transitions, 6756 flow. Second operand 9 states and 159 transitions. [2024-05-12 12:11:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 488 transitions, 7980 flow [2024-05-12 12:11:14,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 488 transitions, 7718 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-05-12 12:11:14,633 INFO L231 Difference]: Finished difference. Result has 291 places, 447 transitions, 6730 flow [2024-05-12 12:11:14,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6730, PETRI_PLACES=291, PETRI_TRANSITIONS=447} [2024-05-12 12:11:14,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-05-12 12:11:14,633 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 447 transitions, 6730 flow [2024-05-12 12:11:14,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:14,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:14,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:14,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 12:11:14,634 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:14,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:14,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2119623881, now seen corresponding path program 9 times [2024-05-12 12:11:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:14,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195480169] [2024-05-12 12:11:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:14,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:19,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195480169] [2024-05-12 12:11:19,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195480169] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:19,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:11:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536772941] [2024-05-12 12:11:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:11:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:11:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:11:19,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:19,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 447 transitions, 6730 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:19,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:19,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:20,986 INFO L124 PetriNetUnfolderBase]: 2241/3794 cut-off events. [2024-05-12 12:11:20,986 INFO L125 PetriNetUnfolderBase]: For 91471/91474 co-relation queries the response was YES. [2024-05-12 12:11:21,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27489 conditions, 3794 events. 2241/3794 cut-off events. For 91471/91474 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23158 event pairs, 211 based on Foata normal form. 4/3782 useless extension candidates. Maximal degree in co-relation 27348. Up to 2934 conditions per place. [2024-05-12 12:11:21,053 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 375 selfloop transitions, 109 changer transitions 0/491 dead transitions. [2024-05-12 12:11:21,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 491 transitions, 8042 flow [2024-05-12 12:11:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 12:11:21,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 12:11:21,055 INFO L175 Difference]: Start difference. First operand has 291 places, 447 transitions, 6730 flow. Second operand 9 states and 157 transitions. [2024-05-12 12:11:21,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 491 transitions, 8042 flow [2024-05-12 12:11:21,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 491 transitions, 7800 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 12:11:21,696 INFO L231 Difference]: Finished difference. Result has 292 places, 450 transitions, 6800 flow [2024-05-12 12:11:21,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6488, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6800, PETRI_PLACES=292, PETRI_TRANSITIONS=450} [2024-05-12 12:11:21,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-05-12 12:11:21,697 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 450 transitions, 6800 flow [2024-05-12 12:11:21,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:21,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:21,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 12:11:21,698 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:21,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2119618301, now seen corresponding path program 10 times [2024-05-12 12:11:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:21,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031666059] [2024-05-12 12:11:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:26,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031666059] [2024-05-12 12:11:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031666059] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:26,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:26,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7611195] [2024-05-12 12:11:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:26,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:26,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 450 transitions, 6800 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:26,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:26,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:26,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:27,572 INFO L124 PetriNetUnfolderBase]: 2257/3822 cut-off events. [2024-05-12 12:11:27,573 INFO L125 PetriNetUnfolderBase]: For 90673/90676 co-relation queries the response was YES. [2024-05-12 12:11:27,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27805 conditions, 3822 events. 2257/3822 cut-off events. For 90673/90676 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 23402 event pairs, 210 based on Foata normal form. 2/3808 useless extension candidates. Maximal degree in co-relation 27663. Up to 2892 conditions per place. [2024-05-12 12:11:27,622 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 372 selfloop transitions, 113 changer transitions 0/492 dead transitions. [2024-05-12 12:11:27,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 492 transitions, 8092 flow [2024-05-12 12:11:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 12:11:27,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 12:11:27,624 INFO L175 Difference]: Start difference. First operand has 292 places, 450 transitions, 6800 flow. Second operand 9 states and 158 transitions. [2024-05-12 12:11:27,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 492 transitions, 8092 flow [2024-05-12 12:11:28,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 492 transitions, 7810 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-05-12 12:11:28,220 INFO L231 Difference]: Finished difference. Result has 294 places, 453 transitions, 6845 flow [2024-05-12 12:11:28,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=294, PETRI_TRANSITIONS=453} [2024-05-12 12:11:28,221 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-05-12 12:11:28,221 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 453 transitions, 6845 flow [2024-05-12 12:11:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:28,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 12:11:28,222 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:28,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2119474151, now seen corresponding path program 11 times [2024-05-12 12:11:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514271052] [2024-05-12 12:11:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514271052] [2024-05-12 12:11:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514271052] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:32,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:32,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521711303] [2024-05-12 12:11:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:32,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 453 transitions, 6845 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:33,895 INFO L124 PetriNetUnfolderBase]: 2277/3858 cut-off events. [2024-05-12 12:11:33,895 INFO L125 PetriNetUnfolderBase]: For 93979/93982 co-relation queries the response was YES. [2024-05-12 12:11:33,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28110 conditions, 3858 events. 2277/3858 cut-off events. For 93979/93982 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 23639 event pairs, 208 based on Foata normal form. 2/3844 useless extension candidates. Maximal degree in co-relation 27967. Up to 2656 conditions per place. [2024-05-12 12:11:34,030 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 359 selfloop transitions, 131 changer transitions 0/497 dead transitions. [2024-05-12 12:11:34,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 497 transitions, 8351 flow [2024-05-12 12:11:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 12:11:34,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 12:11:34,031 INFO L175 Difference]: Start difference. First operand has 294 places, 453 transitions, 6845 flow. Second operand 9 states and 158 transitions. [2024-05-12 12:11:34,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 497 transitions, 8351 flow [2024-05-12 12:11:34,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 497 transitions, 8056 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-05-12 12:11:34,629 INFO L231 Difference]: Finished difference. Result has 296 places, 459 transitions, 7013 flow [2024-05-12 12:11:34,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6550, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7013, PETRI_PLACES=296, PETRI_TRANSITIONS=459} [2024-05-12 12:11:34,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-05-12 12:11:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 459 transitions, 7013 flow [2024-05-12 12:11:34,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:34,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:34,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 12:11:34,632 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:34,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -195661316, now seen corresponding path program 1 times [2024-05-12 12:11:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656849142] [2024-05-12 12:11:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656849142] [2024-05-12 12:11:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656849142] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:11:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848657191] [2024-05-12 12:11:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:11:34,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:11:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:11:35,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 12:11:35,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 459 transitions, 7013 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:35,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:35,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 12:11:35,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:35,888 INFO L124 PetriNetUnfolderBase]: 1889/3351 cut-off events. [2024-05-12 12:11:35,889 INFO L125 PetriNetUnfolderBase]: For 66866/66962 co-relation queries the response was YES. [2024-05-12 12:11:35,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23353 conditions, 3351 events. 1889/3351 cut-off events. For 66866/66962 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21530 event pairs, 344 based on Foata normal form. 129/3433 useless extension candidates. Maximal degree in co-relation 23209. Up to 992 conditions per place. [2024-05-12 12:11:35,934 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 191 selfloop transitions, 73 changer transitions 171/544 dead transitions. [2024-05-12 12:11:35,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 544 transitions, 8782 flow [2024-05-12 12:11:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:11:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:11:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-05-12 12:11:35,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-05-12 12:11:35,935 INFO L175 Difference]: Start difference. First operand has 296 places, 459 transitions, 7013 flow. Second operand 11 states and 215 transitions. [2024-05-12 12:11:35,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 544 transitions, 8782 flow [2024-05-12 12:11:36,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 544 transitions, 8503 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-05-12 12:11:36,445 INFO L231 Difference]: Finished difference. Result has 309 places, 354 transitions, 5660 flow [2024-05-12 12:11:36,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6754, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5660, PETRI_PLACES=309, PETRI_TRANSITIONS=354} [2024-05-12 12:11:36,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-05-12 12:11:36,446 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 354 transitions, 5660 flow [2024-05-12 12:11:36,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:36,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:36,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:36,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 12:11:36,447 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:36,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:36,447 INFO L85 PathProgramCache]: Analyzing trace with hash -161232490, now seen corresponding path program 1 times [2024-05-12 12:11:36,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:36,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473782224] [2024-05-12 12:11:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:36,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:41,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473782224] [2024-05-12 12:11:41,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473782224] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:41,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:41,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:11:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329458562] [2024-05-12 12:11:41,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:41,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:11:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:11:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:11:41,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:41,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 354 transitions, 5660 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:41,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:41,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:41,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:42,768 INFO L124 PetriNetUnfolderBase]: 1923/3280 cut-off events. [2024-05-12 12:11:42,768 INFO L125 PetriNetUnfolderBase]: For 87588/87600 co-relation queries the response was YES. [2024-05-12 12:11:42,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25050 conditions, 3280 events. 1923/3280 cut-off events. For 87588/87600 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 19801 event pairs, 237 based on Foata normal form. 10/3286 useless extension candidates. Maximal degree in co-relation 24898. Up to 2905 conditions per place. [2024-05-12 12:11:42,810 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 329 selfloop transitions, 70 changer transitions 0/405 dead transitions. [2024-05-12 12:11:42,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 405 transitions, 6851 flow [2024-05-12 12:11:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:11:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:11:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-05-12 12:11:42,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-05-12 12:11:42,812 INFO L175 Difference]: Start difference. First operand has 309 places, 354 transitions, 5660 flow. Second operand 12 states and 201 transitions. [2024-05-12 12:11:42,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 405 transitions, 6851 flow [2024-05-12 12:11:43,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 405 transitions, 6424 flow, removed 52 selfloop flow, removed 20 redundant places. [2024-05-12 12:11:43,471 INFO L231 Difference]: Finished difference. Result has 294 places, 356 transitions, 5489 flow [2024-05-12 12:11:43,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5489, PETRI_PLACES=294, PETRI_TRANSITIONS=356} [2024-05-12 12:11:43,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-05-12 12:11:43,472 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 356 transitions, 5489 flow [2024-05-12 12:11:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:43,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:43,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:43,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 12:11:43,472 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:43,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1753376654, now seen corresponding path program 2 times [2024-05-12 12:11:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469121810] [2024-05-12 12:11:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469121810] [2024-05-12 12:11:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469121810] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:11:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216335003] [2024-05-12 12:11:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:11:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:11:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:11:48,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:48,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 356 transitions, 5489 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:48,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:48,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:48,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:49,910 INFO L124 PetriNetUnfolderBase]: 2034/3473 cut-off events. [2024-05-12 12:11:49,910 INFO L125 PetriNetUnfolderBase]: For 113822/113825 co-relation queries the response was YES. [2024-05-12 12:11:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25820 conditions, 3473 events. 2034/3473 cut-off events. For 113822/113825 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21163 event pairs, 226 based on Foata normal form. 2/3468 useless extension candidates. Maximal degree in co-relation 25683. Up to 1957 conditions per place. [2024-05-12 12:11:49,950 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 245 selfloop transitions, 175 changer transitions 0/426 dead transitions. [2024-05-12 12:11:49,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 426 transitions, 7218 flow [2024-05-12 12:11:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:11:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:11:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-05-12 12:11:49,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:11:49,952 INFO L175 Difference]: Start difference. First operand has 294 places, 356 transitions, 5489 flow. Second operand 12 states and 216 transitions. [2024-05-12 12:11:49,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 426 transitions, 7218 flow [2024-05-12 12:11:50,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 426 transitions, 6980 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-05-12 12:11:50,549 INFO L231 Difference]: Finished difference. Result has 297 places, 365 transitions, 5895 flow [2024-05-12 12:11:50,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5895, PETRI_PLACES=297, PETRI_TRANSITIONS=365} [2024-05-12 12:11:50,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-05-12 12:11:50,549 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 365 transitions, 5895 flow [2024-05-12 12:11:50,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:50,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:50,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 12:11:50,550 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:50,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1677351979, now seen corresponding path program 12 times [2024-05-12 12:11:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420665752] [2024-05-12 12:11:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:54,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420665752] [2024-05-12 12:11:54,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420665752] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:54,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569444593] [2024-05-12 12:11:54,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:54,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:54,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:54,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:54,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 365 transitions, 5895 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:54,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:54,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:54,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:55,758 INFO L124 PetriNetUnfolderBase]: 2048/3499 cut-off events. [2024-05-12 12:11:55,758 INFO L125 PetriNetUnfolderBase]: For 118284/118287 co-relation queries the response was YES. [2024-05-12 12:11:55,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26624 conditions, 3499 events. 2048/3499 cut-off events. For 118284/118287 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21391 event pairs, 242 based on Foata normal form. 2/3494 useless extension candidates. Maximal degree in co-relation 26484. Up to 2673 conditions per place. [2024-05-12 12:11:55,800 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 313 selfloop transitions, 85 changer transitions 0/404 dead transitions. [2024-05-12 12:11:55,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 404 transitions, 7085 flow [2024-05-12 12:11:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 12:11:55,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-05-12 12:11:55,802 INFO L175 Difference]: Start difference. First operand has 297 places, 365 transitions, 5895 flow. Second operand 9 states and 154 transitions. [2024-05-12 12:11:55,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 404 transitions, 7085 flow [2024-05-12 12:11:56,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 404 transitions, 6708 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-05-12 12:11:56,529 INFO L231 Difference]: Finished difference. Result has 296 places, 367 transitions, 5731 flow [2024-05-12 12:11:56,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5731, PETRI_PLACES=296, PETRI_TRANSITIONS=367} [2024-05-12 12:11:56,530 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-05-12 12:11:56,530 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 367 transitions, 5731 flow [2024-05-12 12:11:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:11:56,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:56,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:11:56,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 12:11:56,530 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:56,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 785182853, now seen corresponding path program 13 times [2024-05-12 12:11:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:56,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657442648] [2024-05-12 12:11:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657442648] [2024-05-12 12:12:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657442648] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:01,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:01,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:12:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018663212] [2024-05-12 12:12:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:12:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:12:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:12:01,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:01,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 367 transitions, 5731 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:01,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:01,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:01,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:02,514 INFO L124 PetriNetUnfolderBase]: 2058/3517 cut-off events. [2024-05-12 12:12:02,514 INFO L125 PetriNetUnfolderBase]: For 117027/117030 co-relation queries the response was YES. [2024-05-12 12:12:02,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 3517 events. 2058/3517 cut-off events. For 117027/117030 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21544 event pairs, 246 based on Foata normal form. 4/3514 useless extension candidates. Maximal degree in co-relation 26131. Up to 2767 conditions per place. [2024-05-12 12:12:02,555 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 318 selfloop transitions, 82 changer transitions 0/406 dead transitions. [2024-05-12 12:12:02,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 406 transitions, 6800 flow [2024-05-12 12:12:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:12:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:12:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-05-12 12:12:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-05-12 12:12:02,556 INFO L175 Difference]: Start difference. First operand has 296 places, 367 transitions, 5731 flow. Second operand 9 states and 152 transitions. [2024-05-12 12:12:02,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 406 transitions, 6800 flow [2024-05-12 12:12:03,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 406 transitions, 6539 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 12:12:03,197 INFO L231 Difference]: Finished difference. Result has 297 places, 368 transitions, 5664 flow [2024-05-12 12:12:03,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5664, PETRI_PLACES=297, PETRI_TRANSITIONS=368} [2024-05-12 12:12:03,198 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-05-12 12:12:03,198 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 368 transitions, 5664 flow [2024-05-12 12:12:03,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:03,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:03,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:03,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 12:12:03,198 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:03,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2069566424, now seen corresponding path program 3 times [2024-05-12 12:12:03,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:03,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234762960] [2024-05-12 12:12:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:08,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234762960] [2024-05-12 12:12:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234762960] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:08,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:12:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199034149] [2024-05-12 12:12:08,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:08,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:12:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:12:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:12:08,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:08,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 368 transitions, 5664 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:08,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:08,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:08,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:09,917 INFO L124 PetriNetUnfolderBase]: 2062/3522 cut-off events. [2024-05-12 12:12:09,917 INFO L125 PetriNetUnfolderBase]: For 110317/110329 co-relation queries the response was YES. [2024-05-12 12:12:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25849 conditions, 3522 events. 2062/3522 cut-off events. For 110317/110329 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21655 event pairs, 282 based on Foata normal form. 10/3528 useless extension candidates. Maximal degree in co-relation 25709. Up to 3190 conditions per place. [2024-05-12 12:12:09,960 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 350 selfloop transitions, 59 changer transitions 0/415 dead transitions. [2024-05-12 12:12:09,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 415 transitions, 6827 flow [2024-05-12 12:12:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:12:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:12:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 12:12:09,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 12:12:09,961 INFO L175 Difference]: Start difference. First operand has 297 places, 368 transitions, 5664 flow. Second operand 11 states and 184 transitions. [2024-05-12 12:12:09,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 415 transitions, 6827 flow [2024-05-12 12:12:10,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 415 transitions, 6652 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 12:12:10,634 INFO L231 Difference]: Finished difference. Result has 301 places, 371 transitions, 5706 flow [2024-05-12 12:12:10,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5706, PETRI_PLACES=301, PETRI_TRANSITIONS=371} [2024-05-12 12:12:10,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-05-12 12:12:10,635 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 371 transitions, 5706 flow [2024-05-12 12:12:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:10,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:10,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 12:12:10,635 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:10,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1434767443, now seen corresponding path program 14 times [2024-05-12 12:12:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:10,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193455633] [2024-05-12 12:12:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:10,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:15,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193455633] [2024-05-12 12:12:15,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193455633] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:15,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:15,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:15,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348230685] [2024-05-12 12:12:15,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:15,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:15,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 371 transitions, 5706 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:15,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:15,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:15,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:16,526 INFO L124 PetriNetUnfolderBase]: 2075/3548 cut-off events. [2024-05-12 12:12:16,526 INFO L125 PetriNetUnfolderBase]: For 111656/111659 co-relation queries the response was YES. [2024-05-12 12:12:16,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25880 conditions, 3548 events. 2075/3548 cut-off events. For 111656/111659 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21792 event pairs, 247 based on Foata normal form. 2/3543 useless extension candidates. Maximal degree in co-relation 25739. Up to 2816 conditions per place. [2024-05-12 12:12:16,566 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 324 selfloop transitions, 79 changer transitions 0/409 dead transitions. [2024-05-12 12:12:16,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 409 transitions, 6771 flow [2024-05-12 12:12:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:12:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:12:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 12:12:16,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:12:16,568 INFO L175 Difference]: Start difference. First operand has 301 places, 371 transitions, 5706 flow. Second operand 9 states and 153 transitions. [2024-05-12 12:12:16,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 409 transitions, 6771 flow [2024-05-12 12:12:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 409 transitions, 6588 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-05-12 12:12:17,198 INFO L231 Difference]: Finished difference. Result has 301 places, 372 transitions, 5708 flow [2024-05-12 12:12:17,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5523, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5708, PETRI_PLACES=301, PETRI_TRANSITIONS=372} [2024-05-12 12:12:17,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-05-12 12:12:17,199 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 372 transitions, 5708 flow [2024-05-12 12:12:17,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:17,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:17,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 12:12:17,199 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:17,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1040695881, now seen corresponding path program 15 times [2024-05-12 12:12:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187592870] [2024-05-12 12:12:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187592870] [2024-05-12 12:12:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187592870] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:12:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755837023] [2024-05-12 12:12:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:12:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:12:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:12:22,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:22,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 372 transitions, 5708 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:22,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:22,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:22,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:23,591 INFO L124 PetriNetUnfolderBase]: 2072/3543 cut-off events. [2024-05-12 12:12:23,592 INFO L125 PetriNetUnfolderBase]: For 109255/109258 co-relation queries the response was YES. [2024-05-12 12:12:23,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25765 conditions, 3543 events. 2072/3543 cut-off events. For 109255/109258 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21754 event pairs, 248 based on Foata normal form. 2/3538 useless extension candidates. Maximal degree in co-relation 25623. Up to 2811 conditions per place. [2024-05-12 12:12:23,632 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 313 selfloop transitions, 94 changer transitions 0/413 dead transitions. [2024-05-12 12:12:23,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 413 transitions, 6786 flow [2024-05-12 12:12:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 12:12:23,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-05-12 12:12:23,634 INFO L175 Difference]: Start difference. First operand has 301 places, 372 transitions, 5708 flow. Second operand 10 states and 167 transitions. [2024-05-12 12:12:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 413 transitions, 6786 flow [2024-05-12 12:12:24,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 413 transitions, 6612 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 12:12:24,351 INFO L231 Difference]: Finished difference. Result has 304 places, 372 transitions, 5726 flow [2024-05-12 12:12:24,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5534, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5726, PETRI_PLACES=304, PETRI_TRANSITIONS=372} [2024-05-12 12:12:24,352 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-05-12 12:12:24,352 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 372 transitions, 5726 flow [2024-05-12 12:12:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:24,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:24,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 12:12:24,352 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1051089879, now seen corresponding path program 1 times [2024-05-12 12:12:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53974300] [2024-05-12 12:12:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:28,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:28,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53974300] [2024-05-12 12:12:28,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53974300] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:28,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:28,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:12:28,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631621381] [2024-05-12 12:12:28,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:28,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:12:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:12:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:12:28,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:28,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 372 transitions, 5726 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:28,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:28,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:28,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:30,161 INFO L124 PetriNetUnfolderBase]: 2070/3540 cut-off events. [2024-05-12 12:12:30,161 INFO L125 PetriNetUnfolderBase]: For 105449/105452 co-relation queries the response was YES. [2024-05-12 12:12:30,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25662 conditions, 3540 events. 2070/3540 cut-off events. For 105449/105452 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21785 event pairs, 250 based on Foata normal form. 2/3535 useless extension candidates. Maximal degree in co-relation 25519. Up to 2421 conditions per place. [2024-05-12 12:12:30,199 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 259 selfloop transitions, 155 changer transitions 0/420 dead transitions. [2024-05-12 12:12:30,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 420 transitions, 6938 flow [2024-05-12 12:12:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 12:12:30,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 12:12:30,202 INFO L175 Difference]: Start difference. First operand has 304 places, 372 transitions, 5726 flow. Second operand 10 states and 178 transitions. [2024-05-12 12:12:30,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 420 transitions, 6938 flow [2024-05-12 12:12:30,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 420 transitions, 6662 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-05-12 12:12:30,878 INFO L231 Difference]: Finished difference. Result has 305 places, 375 transitions, 5860 flow [2024-05-12 12:12:30,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5860, PETRI_PLACES=305, PETRI_TRANSITIONS=375} [2024-05-12 12:12:30,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-05-12 12:12:30,879 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 375 transitions, 5860 flow [2024-05-12 12:12:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:30,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:30,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:30,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 12:12:30,880 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:30,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1040972928, now seen corresponding path program 4 times [2024-05-12 12:12:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445489116] [2024-05-12 12:12:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:35,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445489116] [2024-05-12 12:12:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445489116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:35,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:12:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778180836] [2024-05-12 12:12:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:35,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:12:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:12:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:12:35,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 375 transitions, 5860 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:35,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:35,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:35,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:37,463 INFO L124 PetriNetUnfolderBase]: 2150/3680 cut-off events. [2024-05-12 12:12:37,463 INFO L125 PetriNetUnfolderBase]: For 138716/138719 co-relation queries the response was YES. [2024-05-12 12:12:37,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26790 conditions, 3680 events. 2150/3680 cut-off events. For 138716/138719 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22800 event pairs, 255 based on Foata normal form. 12/3685 useless extension candidates. Maximal degree in co-relation 26646. Up to 2405 conditions per place. [2024-05-12 12:12:37,507 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 284 selfloop transitions, 143 changer transitions 0/433 dead transitions. [2024-05-12 12:12:37,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 433 transitions, 7168 flow [2024-05-12 12:12:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:12:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:12:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-05-12 12:12:37,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-05-12 12:12:37,509 INFO L175 Difference]: Start difference. First operand has 305 places, 375 transitions, 5860 flow. Second operand 11 states and 199 transitions. [2024-05-12 12:12:37,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 433 transitions, 7168 flow [2024-05-12 12:12:38,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 433 transitions, 6856 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 12:12:38,180 INFO L231 Difference]: Finished difference. Result has 308 places, 377 transitions, 5916 flow [2024-05-12 12:12:38,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5916, PETRI_PLACES=308, PETRI_TRANSITIONS=377} [2024-05-12 12:12:38,181 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-05-12 12:12:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 377 transitions, 5916 flow [2024-05-12 12:12:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:38,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:38,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 12:12:38,182 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:38,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 792811550, now seen corresponding path program 5 times [2024-05-12 12:12:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364764014] [2024-05-12 12:12:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364764014] [2024-05-12 12:12:42,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364764014] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:42,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:42,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:12:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042211027] [2024-05-12 12:12:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:42,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:12:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:12:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:12:43,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:43,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 377 transitions, 5916 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:43,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:43,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:43,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:44,381 INFO L124 PetriNetUnfolderBase]: 2162/3702 cut-off events. [2024-05-12 12:12:44,381 INFO L125 PetriNetUnfolderBase]: For 110287/110299 co-relation queries the response was YES. [2024-05-12 12:12:44,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26915 conditions, 3702 events. 2162/3702 cut-off events. For 110287/110299 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23004 event pairs, 304 based on Foata normal form. 10/3708 useless extension candidates. Maximal degree in co-relation 26770. Up to 3362 conditions per place. [2024-05-12 12:12:44,421 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 364 selfloop transitions, 55 changer transitions 0/425 dead transitions. [2024-05-12 12:12:44,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 425 transitions, 7159 flow [2024-05-12 12:12:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 12:12:44,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:12:44,423 INFO L175 Difference]: Start difference. First operand has 308 places, 377 transitions, 5916 flow. Second operand 10 states and 170 transitions. [2024-05-12 12:12:44,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 425 transitions, 7159 flow [2024-05-12 12:12:44,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 425 transitions, 6823 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-05-12 12:12:44,996 INFO L231 Difference]: Finished difference. Result has 310 places, 384 transitions, 5874 flow [2024-05-12 12:12:44,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5584, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5874, PETRI_PLACES=310, PETRI_TRANSITIONS=384} [2024-05-12 12:12:44,999 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-05-12 12:12:44,999 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 384 transitions, 5874 flow [2024-05-12 12:12:44,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:44,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:44,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:44,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 12:12:45,000 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:45,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:45,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1631473952, now seen corresponding path program 1 times [2024-05-12 12:12:45,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:45,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914280665] [2024-05-12 12:12:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:45,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914280665] [2024-05-12 12:12:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914280665] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:49,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:12:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262994849] [2024-05-12 12:12:49,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:12:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:12:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:12:49,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:49,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 384 transitions, 5874 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:49,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:49,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:49,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:50,658 INFO L124 PetriNetUnfolderBase]: 2178/3729 cut-off events. [2024-05-12 12:12:50,659 INFO L125 PetriNetUnfolderBase]: For 109134/109146 co-relation queries the response was YES. [2024-05-12 12:12:50,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26474 conditions, 3729 events. 2178/3729 cut-off events. For 109134/109146 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23175 event pairs, 294 based on Foata normal form. 10/3735 useless extension candidates. Maximal degree in co-relation 26327. Up to 3244 conditions per place. [2024-05-12 12:12:50,706 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 369 selfloop transitions, 48 changer transitions 0/423 dead transitions. [2024-05-12 12:12:50,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 423 transitions, 6936 flow [2024-05-12 12:12:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 12:12:50,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-05-12 12:12:50,708 INFO L175 Difference]: Start difference. First operand has 310 places, 384 transitions, 5874 flow. Second operand 10 states and 158 transitions. [2024-05-12 12:12:50,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 423 transitions, 6936 flow [2024-05-12 12:12:51,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 423 transitions, 6766 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-05-12 12:12:51,428 INFO L231 Difference]: Finished difference. Result has 314 places, 387 transitions, 5883 flow [2024-05-12 12:12:51,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5883, PETRI_PLACES=314, PETRI_TRANSITIONS=387} [2024-05-12 12:12:51,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-05-12 12:12:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 387 transitions, 5883 flow [2024-05-12 12:12:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 12:12:51,445 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:51,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash 197097628, now seen corresponding path program 2 times [2024-05-12 12:12:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:51,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300339266] [2024-05-12 12:12:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:55,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:55,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300339266] [2024-05-12 12:12:55,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300339266] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:55,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:55,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:12:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371229400] [2024-05-12 12:12:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:12:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:12:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:12:55,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:55,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 387 transitions, 5883 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:55,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:55,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:55,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:57,449 INFO L124 PetriNetUnfolderBase]: 2512/4306 cut-off events. [2024-05-12 12:12:57,450 INFO L125 PetriNetUnfolderBase]: For 126970/126970 co-relation queries the response was YES. [2024-05-12 12:12:57,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30758 conditions, 4306 events. 2512/4306 cut-off events. For 126970/126970 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 27623 event pairs, 416 based on Foata normal form. 2/4303 useless extension candidates. Maximal degree in co-relation 30609. Up to 3603 conditions per place. [2024-05-12 12:12:57,508 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 69 changer transitions 0/505 dead transitions. [2024-05-12 12:12:57,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 505 transitions, 8657 flow [2024-05-12 12:12:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:12:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:12:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-05-12 12:12:57,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-05-12 12:12:57,510 INFO L175 Difference]: Start difference. First operand has 314 places, 387 transitions, 5883 flow. Second operand 11 states and 180 transitions. [2024-05-12 12:12:57,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 505 transitions, 8657 flow [2024-05-12 12:12:58,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 505 transitions, 8498 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-05-12 12:12:58,512 INFO L231 Difference]: Finished difference. Result has 323 places, 432 transitions, 6904 flow [2024-05-12 12:12:58,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5742, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6904, PETRI_PLACES=323, PETRI_TRANSITIONS=432} [2024-05-12 12:12:58,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-05-12 12:12:58,513 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 432 transitions, 6904 flow [2024-05-12 12:12:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:12:58,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:58,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:12:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 12:12:58,515 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:58,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -813430356, now seen corresponding path program 3 times [2024-05-12 12:12:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:58,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888522836] [2024-05-12 12:12:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:03,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888522836] [2024-05-12 12:13:03,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888522836] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:03,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:13:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267477567] [2024-05-12 12:13:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:03,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:13:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:13:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:13:03,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:03,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 432 transitions, 6904 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:03,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:03,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:03,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:04,948 INFO L124 PetriNetUnfolderBase]: 2755/4741 cut-off events. [2024-05-12 12:13:04,948 INFO L125 PetriNetUnfolderBase]: For 151328/151328 co-relation queries the response was YES. [2024-05-12 12:13:04,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34962 conditions, 4741 events. 2755/4741 cut-off events. For 151328/151328 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 31469 event pairs, 430 based on Foata normal form. 2/4739 useless extension candidates. Maximal degree in co-relation 34806. Up to 3747 conditions per place. [2024-05-12 12:13:05,119 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 440 selfloop transitions, 105 changer transitions 0/551 dead transitions. [2024-05-12 12:13:05,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 551 transitions, 9912 flow [2024-05-12 12:13:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:13:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:13:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 12:13:05,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 12:13:05,121 INFO L175 Difference]: Start difference. First operand has 323 places, 432 transitions, 6904 flow. Second operand 11 states and 184 transitions. [2024-05-12 12:13:05,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 551 transitions, 9912 flow [2024-05-12 12:13:06,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 551 transitions, 9678 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-05-12 12:13:06,151 INFO L231 Difference]: Finished difference. Result has 337 places, 478 transitions, 8141 flow [2024-05-12 12:13:06,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6786, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8141, PETRI_PLACES=337, PETRI_TRANSITIONS=478} [2024-05-12 12:13:06,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-05-12 12:13:06,151 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 478 transitions, 8141 flow [2024-05-12 12:13:06,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:06,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:06,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:06,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 12:13:06,152 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:06,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash -802201834, now seen corresponding path program 4 times [2024-05-12 12:13:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:06,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893356780] [2024-05-12 12:13:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893356780] [2024-05-12 12:13:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893356780] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:13:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548197887] [2024-05-12 12:13:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:10,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:13:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:13:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:13:11,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:11,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 478 transitions, 8141 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:11,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:11,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:12,724 INFO L124 PetriNetUnfolderBase]: 2791/4815 cut-off events. [2024-05-12 12:13:12,724 INFO L125 PetriNetUnfolderBase]: For 165315/165315 co-relation queries the response was YES. [2024-05-12 12:13:12,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35800 conditions, 4815 events. 2791/4815 cut-off events. For 165315/165315 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 32075 event pairs, 522 based on Foata normal form. 8/4819 useless extension candidates. Maximal degree in co-relation 35637. Up to 4103 conditions per place. [2024-05-12 12:13:12,789 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 428 selfloop transitions, 96 changer transitions 0/530 dead transitions. [2024-05-12 12:13:12,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 530 transitions, 9687 flow [2024-05-12 12:13:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:13:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:13:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 12:13:12,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 12:13:12,816 INFO L175 Difference]: Start difference. First operand has 337 places, 478 transitions, 8141 flow. Second operand 10 states and 165 transitions. [2024-05-12 12:13:12,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 530 transitions, 9687 flow [2024-05-12 12:13:13,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 530 transitions, 9509 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-05-12 12:13:13,959 INFO L231 Difference]: Finished difference. Result has 343 places, 487 transitions, 8424 flow [2024-05-12 12:13:13,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8424, PETRI_PLACES=343, PETRI_TRANSITIONS=487} [2024-05-12 12:13:13,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-05-12 12:13:13,960 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 487 transitions, 8424 flow [2024-05-12 12:13:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:13,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:13,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 12:13:13,960 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:13,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash -802208344, now seen corresponding path program 5 times [2024-05-12 12:13:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445884596] [2024-05-12 12:13:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445884596] [2024-05-12 12:13:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445884596] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:18,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:13:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447558963] [2024-05-12 12:13:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:13:18,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:13:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:13:18,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 487 transitions, 8424 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:20,403 INFO L124 PetriNetUnfolderBase]: 2833/4885 cut-off events. [2024-05-12 12:13:20,404 INFO L125 PetriNetUnfolderBase]: For 157628/157628 co-relation queries the response was YES. [2024-05-12 12:13:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36789 conditions, 4885 events. 2833/4885 cut-off events. For 157628/157628 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 32734 event pairs, 511 based on Foata normal form. 4/4885 useless extension candidates. Maximal degree in co-relation 36624. Up to 3981 conditions per place. [2024-05-12 12:13:20,471 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 431 selfloop transitions, 103 changer transitions 0/540 dead transitions. [2024-05-12 12:13:20,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 540 transitions, 9986 flow [2024-05-12 12:13:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:13:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:13:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 12:13:20,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-05-12 12:13:20,472 INFO L175 Difference]: Start difference. First operand has 343 places, 487 transitions, 8424 flow. Second operand 10 states and 167 transitions. [2024-05-12 12:13:20,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 540 transitions, 9986 flow [2024-05-12 12:13:21,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 540 transitions, 9725 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-05-12 12:13:21,618 INFO L231 Difference]: Finished difference. Result has 347 places, 496 transitions, 8634 flow [2024-05-12 12:13:21,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8163, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8634, PETRI_PLACES=347, PETRI_TRANSITIONS=496} [2024-05-12 12:13:21,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-05-12 12:13:21,619 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 496 transitions, 8634 flow [2024-05-12 12:13:21,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:21,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:21,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 12:13:21,619 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:21,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -802381324, now seen corresponding path program 6 times [2024-05-12 12:13:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816320386] [2024-05-12 12:13:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816320386] [2024-05-12 12:13:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816320386] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:13:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191731756] [2024-05-12 12:13:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:13:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:13:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:13:26,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:26,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 496 transitions, 8634 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:26,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:26,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:26,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:28,395 INFO L124 PetriNetUnfolderBase]: 2839/4895 cut-off events. [2024-05-12 12:13:28,395 INFO L125 PetriNetUnfolderBase]: For 149636/149636 co-relation queries the response was YES. [2024-05-12 12:13:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36793 conditions, 4895 events. 2839/4895 cut-off events. For 149636/149636 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32735 event pairs, 466 based on Foata normal form. 4/4895 useless extension candidates. Maximal degree in co-relation 36627. Up to 3731 conditions per place. [2024-05-12 12:13:28,464 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 431 selfloop transitions, 110 changer transitions 0/547 dead transitions. [2024-05-12 12:13:28,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 547 transitions, 10200 flow [2024-05-12 12:13:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:13:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:13:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-05-12 12:13:28,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-05-12 12:13:28,465 INFO L175 Difference]: Start difference. First operand has 347 places, 496 transitions, 8634 flow. Second operand 10 states and 168 transitions. [2024-05-12 12:13:28,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 547 transitions, 10200 flow [2024-05-12 12:13:29,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 547 transitions, 9703 flow, removed 150 selfloop flow, removed 8 redundant places. [2024-05-12 12:13:29,731 INFO L231 Difference]: Finished difference. Result has 349 places, 505 transitions, 8640 flow [2024-05-12 12:13:29,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8203, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8640, PETRI_PLACES=349, PETRI_TRANSITIONS=505} [2024-05-12 12:13:29,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-05-12 12:13:29,732 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 505 transitions, 8640 flow [2024-05-12 12:13:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:29,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:29,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:29,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 12:13:29,732 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:29,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1935852940, now seen corresponding path program 1 times [2024-05-12 12:13:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:29,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947297977] [2024-05-12 12:13:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:34,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947297977] [2024-05-12 12:13:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947297977] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:34,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:34,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:13:34,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63103214] [2024-05-12 12:13:34,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:34,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:13:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:34,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:13:34,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:13:34,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:34,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 505 transitions, 8640 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:34,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:34,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:34,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:36,844 INFO L124 PetriNetUnfolderBase]: 2966/5117 cut-off events. [2024-05-12 12:13:36,844 INFO L125 PetriNetUnfolderBase]: For 171742/171742 co-relation queries the response was YES. [2024-05-12 12:13:36,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37934 conditions, 5117 events. 2966/5117 cut-off events. For 171742/171742 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34575 event pairs, 486 based on Foata normal form. 10/5122 useless extension candidates. Maximal degree in co-relation 37767. Up to 4353 conditions per place. [2024-05-12 12:13:36,913 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 490 selfloop transitions, 74 changer transitions 0/570 dead transitions. [2024-05-12 12:13:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 570 transitions, 10330 flow [2024-05-12 12:13:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:13:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:13:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 12:13:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 12:13:36,915 INFO L175 Difference]: Start difference. First operand has 349 places, 505 transitions, 8640 flow. Second operand 11 states and 184 transitions. [2024-05-12 12:13:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 570 transitions, 10330 flow [2024-05-12 12:13:38,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 570 transitions, 10013 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-05-12 12:13:38,091 INFO L231 Difference]: Finished difference. Result has 353 places, 518 transitions, 8749 flow [2024-05-12 12:13:38,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8341, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8749, PETRI_PLACES=353, PETRI_TRANSITIONS=518} [2024-05-12 12:13:38,092 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-05-12 12:13:38,092 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 518 transitions, 8749 flow [2024-05-12 12:13:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:38,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:38,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:38,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 12:13:38,093 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:38,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -891257478, now seen corresponding path program 2 times [2024-05-12 12:13:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196455332] [2024-05-12 12:13:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:43,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:43,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196455332] [2024-05-12 12:13:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196455332] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:43,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:43,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:13:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490359528] [2024-05-12 12:13:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:43,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:13:43,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:13:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:13:43,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:43,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 518 transitions, 8749 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:43,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:43,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:43,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:45,254 INFO L124 PetriNetUnfolderBase]: 3212/5549 cut-off events. [2024-05-12 12:13:45,255 INFO L125 PetriNetUnfolderBase]: For 259689/259689 co-relation queries the response was YES. [2024-05-12 12:13:45,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42462 conditions, 5549 events. 3212/5549 cut-off events. For 259689/259689 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 38142 event pairs, 417 based on Foata normal form. 8/5550 useless extension candidates. Maximal degree in co-relation 42293. Up to 2897 conditions per place. [2024-05-12 12:13:45,333 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 365 selfloop transitions, 209 changer transitions 0/580 dead transitions. [2024-05-12 12:13:45,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 580 transitions, 10677 flow [2024-05-12 12:13:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:13:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:13:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-05-12 12:13:45,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-05-12 12:13:45,335 INFO L175 Difference]: Start difference. First operand has 353 places, 518 transitions, 8749 flow. Second operand 10 states and 185 transitions. [2024-05-12 12:13:45,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 580 transitions, 10677 flow [2024-05-12 12:13:47,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 580 transitions, 10530 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 12:13:47,182 INFO L231 Difference]: Finished difference. Result has 357 places, 522 transitions, 9236 flow [2024-05-12 12:13:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8602, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9236, PETRI_PLACES=357, PETRI_TRANSITIONS=522} [2024-05-12 12:13:47,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-05-12 12:13:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 522 transitions, 9236 flow [2024-05-12 12:13:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 12:13:47,183 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:47,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -891267708, now seen corresponding path program 3 times [2024-05-12 12:13:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013460641] [2024-05-12 12:13:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013460641] [2024-05-12 12:13:52,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013460641] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:52,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:13:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408556353] [2024-05-12 12:13:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:52,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:13:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:13:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:13:52,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 522 transitions, 9236 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:52,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:52,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:54,181 INFO L124 PetriNetUnfolderBase]: 3256/5629 cut-off events. [2024-05-12 12:13:54,181 INFO L125 PetriNetUnfolderBase]: For 269750/269750 co-relation queries the response was YES. [2024-05-12 12:13:54,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43443 conditions, 5629 events. 3256/5629 cut-off events. For 269750/269750 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38946 event pairs, 462 based on Foata normal form. 12/5634 useless extension candidates. Maximal degree in co-relation 43272. Up to 3722 conditions per place. [2024-05-12 12:13:54,266 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 369 selfloop transitions, 199 changer transitions 0/574 dead transitions. [2024-05-12 12:13:54,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 574 transitions, 10785 flow [2024-05-12 12:13:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:13:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:13:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-05-12 12:13:54,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-05-12 12:13:54,268 INFO L175 Difference]: Start difference. First operand has 357 places, 522 transitions, 9236 flow. Second operand 10 states and 182 transitions. [2024-05-12 12:13:54,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 574 transitions, 10785 flow [2024-05-12 12:13:56,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 574 transitions, 10481 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 12:13:56,178 INFO L231 Difference]: Finished difference. Result has 361 places, 524 transitions, 9412 flow [2024-05-12 12:13:56,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8934, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9412, PETRI_PLACES=361, PETRI_TRANSITIONS=524} [2024-05-12 12:13:56,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-05-12 12:13:56,178 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 524 transitions, 9412 flow [2024-05-12 12:13:56,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:13:56,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:56,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:13:56,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 12:13:56,179 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:56,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:56,179 INFO L85 PathProgramCache]: Analyzing trace with hash -891556008, now seen corresponding path program 4 times [2024-05-12 12:13:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:56,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484606177] [2024-05-12 12:13:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484606177] [2024-05-12 12:14:01,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484606177] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:01,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:01,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:14:01,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007517303] [2024-05-12 12:14:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:14:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:01,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:14:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:14:01,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 524 transitions, 9412 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:01,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:01,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:01,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:03,477 INFO L124 PetriNetUnfolderBase]: 3341/5774 cut-off events. [2024-05-12 12:14:03,477 INFO L125 PetriNetUnfolderBase]: For 268775/268775 co-relation queries the response was YES. [2024-05-12 12:14:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45001 conditions, 5774 events. 3341/5774 cut-off events. For 268775/268775 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40062 event pairs, 467 based on Foata normal form. 10/5777 useless extension candidates. Maximal degree in co-relation 44828. Up to 3734 conditions per place. [2024-05-12 12:14:03,563 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 374 selfloop transitions, 203 changer transitions 0/583 dead transitions. [2024-05-12 12:14:03,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 583 transitions, 11058 flow [2024-05-12 12:14:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:14:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:14:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-05-12 12:14:03,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:14:03,565 INFO L175 Difference]: Start difference. First operand has 361 places, 524 transitions, 9412 flow. Second operand 11 states and 198 transitions. [2024-05-12 12:14:03,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 583 transitions, 11058 flow [2024-05-12 12:14:05,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 583 transitions, 10676 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-05-12 12:14:05,423 INFO L231 Difference]: Finished difference. Result has 365 places, 528 transitions, 9564 flow [2024-05-12 12:14:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9033, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9564, PETRI_PLACES=365, PETRI_TRANSITIONS=528} [2024-05-12 12:14:05,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-05-12 12:14:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 528 transitions, 9564 flow [2024-05-12 12:14:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:05,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 12:14:05,424 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:05,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -899845656, now seen corresponding path program 7 times [2024-05-12 12:14:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234867875] [2024-05-12 12:14:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:09,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:09,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234867875] [2024-05-12 12:14:09,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234867875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:09,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:09,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:14:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153798957] [2024-05-12 12:14:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:09,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:14:09,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:14:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:14:09,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:09,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 528 transitions, 9564 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:09,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:09,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:09,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:11,757 INFO L124 PetriNetUnfolderBase]: 3391/5860 cut-off events. [2024-05-12 12:14:11,758 INFO L125 PetriNetUnfolderBase]: For 259177/259177 co-relation queries the response was YES. [2024-05-12 12:14:11,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45953 conditions, 5860 events. 3391/5860 cut-off events. For 259177/259177 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 40842 event pairs, 473 based on Foata normal form. 2/5855 useless extension candidates. Maximal degree in co-relation 45779. Up to 3856 conditions per place. [2024-05-12 12:14:11,841 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 199 changer transitions 0/588 dead transitions. [2024-05-12 12:14:11,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 588 transitions, 11437 flow [2024-05-12 12:14:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:14:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:14:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 12:14:11,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 12:14:11,842 INFO L175 Difference]: Start difference. First operand has 365 places, 528 transitions, 9564 flow. Second operand 10 states and 184 transitions. [2024-05-12 12:14:11,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 588 transitions, 11437 flow [2024-05-12 12:14:13,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 588 transitions, 10940 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-05-12 12:14:13,990 INFO L231 Difference]: Finished difference. Result has 367 places, 534 transitions, 9671 flow [2024-05-12 12:14:13,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9067, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9671, PETRI_PLACES=367, PETRI_TRANSITIONS=534} [2024-05-12 12:14:13,991 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-05-12 12:14:13,991 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 534 transitions, 9671 flow [2024-05-12 12:14:13,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:13,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:13,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:13,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 12:14:13,992 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:13,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash -899608506, now seen corresponding path program 8 times [2024-05-12 12:14:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298473941] [2024-05-12 12:14:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298473941] [2024-05-12 12:14:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298473941] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:14:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386409664] [2024-05-12 12:14:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:18,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:14:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:14:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:14:18,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:18,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 534 transitions, 9671 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:18,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:18,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:18,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:21,095 INFO L124 PetriNetUnfolderBase]: 3385/5850 cut-off events. [2024-05-12 12:14:21,095 INFO L125 PetriNetUnfolderBase]: For 253199/253199 co-relation queries the response was YES. [2024-05-12 12:14:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45422 conditions, 5850 events. 3385/5850 cut-off events. For 253199/253199 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40815 event pairs, 468 based on Foata normal form. 4/5847 useless extension candidates. Maximal degree in co-relation 45246. Up to 4461 conditions per place. [2024-05-12 12:14:21,202 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 384 selfloop transitions, 195 changer transitions 0/585 dead transitions. [2024-05-12 12:14:21,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 585 transitions, 11173 flow [2024-05-12 12:14:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:14:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:14:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 12:14:21,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-05-12 12:14:21,204 INFO L175 Difference]: Start difference. First operand has 367 places, 534 transitions, 9671 flow. Second operand 10 states and 176 transitions. [2024-05-12 12:14:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 585 transitions, 11173 flow [2024-05-12 12:14:23,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 585 transitions, 10798 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-05-12 12:14:23,325 INFO L231 Difference]: Finished difference. Result has 371 places, 534 transitions, 9692 flow [2024-05-12 12:14:23,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9296, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9692, PETRI_PLACES=371, PETRI_TRANSITIONS=534} [2024-05-12 12:14:23,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-05-12 12:14:23,326 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 534 transitions, 9692 flow [2024-05-12 12:14:23,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:23,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:23,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:23,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 12:14:23,326 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:23,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -899599578, now seen corresponding path program 5 times [2024-05-12 12:14:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:23,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592515047] [2024-05-12 12:14:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:23,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592515047] [2024-05-12 12:14:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592515047] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:28,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:28,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:14:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106548919] [2024-05-12 12:14:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:14:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:14:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:14:28,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:28,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 534 transitions, 9692 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:28,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:28,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:28,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:31,143 INFO L124 PetriNetUnfolderBase]: 3470/5995 cut-off events. [2024-05-12 12:14:31,143 INFO L125 PetriNetUnfolderBase]: For 283057/283057 co-relation queries the response was YES. [2024-05-12 12:14:31,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46882 conditions, 5995 events. 3470/5995 cut-off events. For 283057/283057 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 42001 event pairs, 482 based on Foata normal form. 10/5998 useless extension candidates. Maximal degree in co-relation 46704. Up to 4044 conditions per place. [2024-05-12 12:14:31,235 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 393 selfloop transitions, 199 changer transitions 0/598 dead transitions. [2024-05-12 12:14:31,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 598 transitions, 11407 flow [2024-05-12 12:14:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:14:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:14:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-05-12 12:14:31,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-05-12 12:14:31,237 INFO L175 Difference]: Start difference. First operand has 371 places, 534 transitions, 9692 flow. Second operand 11 states and 199 transitions. [2024-05-12 12:14:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 598 transitions, 11407 flow [2024-05-12 12:14:33,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 598 transitions, 11000 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 12:14:33,181 INFO L231 Difference]: Finished difference. Result has 374 places, 538 transitions, 9809 flow [2024-05-12 12:14:33,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9288, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9809, PETRI_PLACES=374, PETRI_TRANSITIONS=538} [2024-05-12 12:14:33,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-05-12 12:14:33,182 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 538 transitions, 9809 flow [2024-05-12 12:14:33,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:33,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:33,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:33,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 12:14:33,183 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:33,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1127919786, now seen corresponding path program 9 times [2024-05-12 12:14:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:33,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480730922] [2024-05-12 12:14:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:33,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:37,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480730922] [2024-05-12 12:14:37,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480730922] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:37,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:37,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:14:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048746361] [2024-05-12 12:14:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:37,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:14:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:14:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:14:37,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:37,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 538 transitions, 9809 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:37,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:37,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:37,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:39,895 INFO L124 PetriNetUnfolderBase]: 3539/6114 cut-off events. [2024-05-12 12:14:39,896 INFO L125 PetriNetUnfolderBase]: For 283390/283390 co-relation queries the response was YES. [2024-05-12 12:14:39,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48362 conditions, 6114 events. 3539/6114 cut-off events. For 283390/283390 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42956 event pairs, 468 based on Foata normal form. 2/6109 useless extension candidates. Maximal degree in co-relation 48183. Up to 4482 conditions per place. [2024-05-12 12:14:39,982 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 391 selfloop transitions, 198 changer transitions 0/595 dead transitions. [2024-05-12 12:14:39,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 595 transitions, 11735 flow [2024-05-12 12:14:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:14:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:14:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 12:14:39,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 12:14:39,983 INFO L175 Difference]: Start difference. First operand has 374 places, 538 transitions, 9809 flow. Second operand 10 states and 177 transitions. [2024-05-12 12:14:39,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 595 transitions, 11735 flow [2024-05-12 12:14:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 595 transitions, 11374 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-05-12 12:14:41,985 INFO L231 Difference]: Finished difference. Result has 377 places, 546 transitions, 10154 flow [2024-05-12 12:14:41,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9450, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10154, PETRI_PLACES=377, PETRI_TRANSITIONS=546} [2024-05-12 12:14:41,985 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-05-12 12:14:41,986 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 546 transitions, 10154 flow [2024-05-12 12:14:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:42,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:42,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:42,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 12:14:42,000 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:42,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1283838806, now seen corresponding path program 10 times [2024-05-12 12:14:42,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897383009] [2024-05-12 12:14:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897383009] [2024-05-12 12:14:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897383009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:46,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:46,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:14:46,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310672732] [2024-05-12 12:14:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:46,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:14:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:14:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:14:47,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:47,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 546 transitions, 10154 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:47,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:47,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:47,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:49,443 INFO L124 PetriNetUnfolderBase]: 3533/6104 cut-off events. [2024-05-12 12:14:49,444 INFO L125 PetriNetUnfolderBase]: For 277119/277119 co-relation queries the response was YES. [2024-05-12 12:14:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48065 conditions, 6104 events. 3533/6104 cut-off events. For 277119/277119 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 42937 event pairs, 470 based on Foata normal form. 4/6101 useless extension candidates. Maximal degree in co-relation 47885. Up to 4715 conditions per place. [2024-05-12 12:14:49,543 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 408 selfloop transitions, 184 changer transitions 0/598 dead transitions. [2024-05-12 12:14:49,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 598 transitions, 11769 flow [2024-05-12 12:14:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:14:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:14:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 12:14:49,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-05-12 12:14:49,544 INFO L175 Difference]: Start difference. First operand has 377 places, 546 transitions, 10154 flow. Second operand 10 states and 172 transitions. [2024-05-12 12:14:49,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 598 transitions, 11769 flow [2024-05-12 12:14:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 598 transitions, 11404 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-05-12 12:14:51,779 INFO L231 Difference]: Finished difference. Result has 381 places, 549 transitions, 10272 flow [2024-05-12 12:14:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9789, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10272, PETRI_PLACES=381, PETRI_TRANSITIONS=549} [2024-05-12 12:14:51,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-05-12 12:14:51,780 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 549 transitions, 10272 flow [2024-05-12 12:14:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:51,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:51,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:14:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 12:14:51,780 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1121484186, now seen corresponding path program 11 times [2024-05-12 12:14:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76880391] [2024-05-12 12:14:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76880391] [2024-05-12 12:14:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76880391] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:56,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:14:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097494356] [2024-05-12 12:14:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:56,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:14:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:14:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:14:56,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:56,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 549 transitions, 10272 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:14:56,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:56,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:58,534 INFO L124 PetriNetUnfolderBase]: 3527/6094 cut-off events. [2024-05-12 12:14:58,534 INFO L125 PetriNetUnfolderBase]: For 264191/264191 co-relation queries the response was YES. [2024-05-12 12:14:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48023 conditions, 6094 events. 3527/6094 cut-off events. For 264191/264191 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 42828 event pairs, 497 based on Foata normal form. 4/6091 useless extension candidates. Maximal degree in co-relation 47841. Up to 4263 conditions per place. [2024-05-12 12:14:58,650 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 404 selfloop transitions, 192 changer transitions 0/602 dead transitions. [2024-05-12 12:14:58,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 602 transitions, 11836 flow [2024-05-12 12:14:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:14:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:14:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-05-12 12:14:58,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-05-12 12:14:58,653 INFO L175 Difference]: Start difference. First operand has 381 places, 549 transitions, 10272 flow. Second operand 10 states and 179 transitions. [2024-05-12 12:14:58,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 602 transitions, 11836 flow [2024-05-12 12:15:00,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 602 transitions, 11258 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-05-12 12:15:00,829 INFO L231 Difference]: Finished difference. Result has 382 places, 551 transitions, 10116 flow [2024-05-12 12:15:00,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9694, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10116, PETRI_PLACES=382, PETRI_TRANSITIONS=551} [2024-05-12 12:15:00,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-05-12 12:15:00,830 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 551 transitions, 10116 flow [2024-05-12 12:15:00,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:00,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:00,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:00,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 12:15:00,830 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:00,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1283832296, now seen corresponding path program 12 times [2024-05-12 12:15:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101365295] [2024-05-12 12:15:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:05,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101365295] [2024-05-12 12:15:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101365295] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:15:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793979042] [2024-05-12 12:15:05,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:15:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:15:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:15:06,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:06,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 551 transitions, 10116 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:06,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:06,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:08,276 INFO L124 PetriNetUnfolderBase]: 3543/6122 cut-off events. [2024-05-12 12:15:08,276 INFO L125 PetriNetUnfolderBase]: For 259402/259402 co-relation queries the response was YES. [2024-05-12 12:15:08,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47669 conditions, 6122 events. 3543/6122 cut-off events. For 259402/259402 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 43154 event pairs, 487 based on Foata normal form. 2/6117 useless extension candidates. Maximal degree in co-relation 47488. Up to 4221 conditions per place. [2024-05-12 12:15:08,378 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 388 selfloop transitions, 210 changer transitions 0/604 dead transitions. [2024-05-12 12:15:08,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 604 transitions, 11742 flow [2024-05-12 12:15:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 12:15:08,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-05-12 12:15:08,380 INFO L175 Difference]: Start difference. First operand has 382 places, 551 transitions, 10116 flow. Second operand 10 states and 176 transitions. [2024-05-12 12:15:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 604 transitions, 11742 flow [2024-05-12 12:15:10,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 604 transitions, 11316 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 12:15:10,649 INFO L231 Difference]: Finished difference. Result has 384 places, 554 transitions, 10229 flow [2024-05-12 12:15:10,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9690, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10229, PETRI_PLACES=384, PETRI_TRANSITIONS=554} [2024-05-12 12:15:10,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-05-12 12:15:10,650 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 554 transitions, 10229 flow [2024-05-12 12:15:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:10,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:10,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 12:15:10,650 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:10,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1283659316, now seen corresponding path program 13 times [2024-05-12 12:15:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:10,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969738095] [2024-05-12 12:15:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:10,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969738095] [2024-05-12 12:15:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969738095] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:15:15,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648018765] [2024-05-12 12:15:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:15,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:15:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:15:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:15:15,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:15,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 554 transitions, 10229 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:15,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:15,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:15,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:18,106 INFO L124 PetriNetUnfolderBase]: 3559/6150 cut-off events. [2024-05-12 12:15:18,107 INFO L125 PetriNetUnfolderBase]: For 265108/265108 co-relation queries the response was YES. [2024-05-12 12:15:18,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48076 conditions, 6150 events. 3559/6150 cut-off events. For 265108/265108 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 43334 event pairs, 476 based on Foata normal form. 2/6145 useless extension candidates. Maximal degree in co-relation 47894. Up to 4595 conditions per place. [2024-05-12 12:15:18,209 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 409 selfloop transitions, 190 changer transitions 0/605 dead transitions. [2024-05-12 12:15:18,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 605 transitions, 11835 flow [2024-05-12 12:15:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-05-12 12:15:18,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:15:18,211 INFO L175 Difference]: Start difference. First operand has 384 places, 554 transitions, 10229 flow. Second operand 10 states and 175 transitions. [2024-05-12 12:15:18,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 605 transitions, 11835 flow [2024-05-12 12:15:20,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 605 transitions, 11330 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-05-12 12:15:20,479 INFO L231 Difference]: Finished difference. Result has 386 places, 557 transitions, 10229 flow [2024-05-12 12:15:20,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9724, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10229, PETRI_PLACES=386, PETRI_TRANSITIONS=557} [2024-05-12 12:15:20,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-05-12 12:15:20,480 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 557 transitions, 10229 flow [2024-05-12 12:15:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:20,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:20,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 12:15:20,481 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:20,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1121490696, now seen corresponding path program 14 times [2024-05-12 12:15:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95728371] [2024-05-12 12:15:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:25,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95728371] [2024-05-12 12:15:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95728371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:15:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546159751] [2024-05-12 12:15:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:15:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:15:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:15:25,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:25,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 557 transitions, 10229 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:25,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:25,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:25,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:28,021 INFO L124 PetriNetUnfolderBase]: 3556/6145 cut-off events. [2024-05-12 12:15:28,021 INFO L125 PetriNetUnfolderBase]: For 260454/260454 co-relation queries the response was YES. [2024-05-12 12:15:28,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47689 conditions, 6145 events. 3556/6145 cut-off events. For 260454/260454 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 43290 event pairs, 491 based on Foata normal form. 2/6140 useless extension candidates. Maximal degree in co-relation 47506. Up to 4686 conditions per place. [2024-05-12 12:15:28,115 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 413 selfloop transitions, 190 changer transitions 0/609 dead transitions. [2024-05-12 12:15:28,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 609 transitions, 11775 flow [2024-05-12 12:15:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 12:15:28,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 12:15:28,117 INFO L175 Difference]: Start difference. First operand has 386 places, 557 transitions, 10229 flow. Second operand 10 states and 178 transitions. [2024-05-12 12:15:28,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 609 transitions, 11775 flow [2024-05-12 12:15:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 609 transitions, 11268 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-05-12 12:15:30,280 INFO L231 Difference]: Finished difference. Result has 388 places, 557 transitions, 10109 flow [2024-05-12 12:15:30,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9722, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10109, PETRI_PLACES=388, PETRI_TRANSITIONS=557} [2024-05-12 12:15:30,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-05-12 12:15:30,280 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 557 transitions, 10109 flow [2024-05-12 12:15:30,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:30,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:30,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:30,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 12:15:30,281 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:30,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1279190666, now seen corresponding path program 15 times [2024-05-12 12:15:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:30,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959357314] [2024-05-12 12:15:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:30,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959357314] [2024-05-12 12:15:35,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959357314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:35,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:35,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:15:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440288944] [2024-05-12 12:15:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:35,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:15:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:15:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:15:35,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:35,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 557 transitions, 10109 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:35,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:35,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:35,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:37,439 INFO L124 PetriNetUnfolderBase]: 3573/6176 cut-off events. [2024-05-12 12:15:37,440 INFO L125 PetriNetUnfolderBase]: For 263612/263612 co-relation queries the response was YES. [2024-05-12 12:15:37,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47878 conditions, 6176 events. 3573/6176 cut-off events. For 263612/263612 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 43577 event pairs, 485 based on Foata normal form. 2/6171 useless extension candidates. Maximal degree in co-relation 47694. Up to 3986 conditions per place. [2024-05-12 12:15:37,546 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 389 selfloop transitions, 213 changer transitions 0/608 dead transitions. [2024-05-12 12:15:37,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 608 transitions, 11991 flow [2024-05-12 12:15:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-05-12 12:15:37,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-05-12 12:15:37,548 INFO L175 Difference]: Start difference. First operand has 388 places, 557 transitions, 10109 flow. Second operand 10 states and 173 transitions. [2024-05-12 12:15:37,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 608 transitions, 11991 flow [2024-05-12 12:15:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 608 transitions, 11598 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 12:15:39,782 INFO L231 Difference]: Finished difference. Result has 390 places, 563 transitions, 10391 flow [2024-05-12 12:15:39,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9716, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10391, PETRI_PLACES=390, PETRI_TRANSITIONS=563} [2024-05-12 12:15:39,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-05-12 12:15:39,783 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 563 transitions, 10391 flow [2024-05-12 12:15:39,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:39,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:39,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:39,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 12:15:39,783 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:39,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1456568264, now seen corresponding path program 6 times [2024-05-12 12:15:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70143831] [2024-05-12 12:15:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:45,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70143831] [2024-05-12 12:15:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70143831] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:45,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:45,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:15:45,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364907724] [2024-05-12 12:15:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:15:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:15:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:15:45,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:45,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 563 transitions, 10391 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:45,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:45,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:45,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:47,844 INFO L124 PetriNetUnfolderBase]: 3658/6321 cut-off events. [2024-05-12 12:15:47,844 INFO L125 PetriNetUnfolderBase]: For 309537/309537 co-relation queries the response was YES. [2024-05-12 12:15:47,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49048 conditions, 6321 events. 3658/6321 cut-off events. For 309537/309537 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 44822 event pairs, 510 based on Foata normal form. 10/6324 useless extension candidates. Maximal degree in co-relation 48863. Up to 4357 conditions per place. [2024-05-12 12:15:47,941 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 408 selfloop transitions, 211 changer transitions 0/625 dead transitions. [2024-05-12 12:15:47,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 625 transitions, 12137 flow [2024-05-12 12:15:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:15:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:15:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-05-12 12:15:47,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-05-12 12:15:47,942 INFO L175 Difference]: Start difference. First operand has 390 places, 563 transitions, 10391 flow. Second operand 11 states and 194 transitions. [2024-05-12 12:15:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 625 transitions, 12137 flow [2024-05-12 12:15:50,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 625 transitions, 11776 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-05-12 12:15:50,203 INFO L231 Difference]: Finished difference. Result has 395 places, 567 transitions, 10571 flow [2024-05-12 12:15:50,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10030, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10571, PETRI_PLACES=395, PETRI_TRANSITIONS=567} [2024-05-12 12:15:50,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-05-12 12:15:50,204 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 567 transitions, 10571 flow [2024-05-12 12:15:50,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:50,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:50,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:50,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 12:15:50,204 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:50,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1121244618, now seen corresponding path program 7 times [2024-05-12 12:15:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707276096] [2024-05-12 12:15:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707276096] [2024-05-12 12:15:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707276096] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:15:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695384757] [2024-05-12 12:15:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:15:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:15:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:15:55,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:55,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 567 transitions, 10571 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:55,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:55,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:55,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:57,996 INFO L124 PetriNetUnfolderBase]: 3645/6298 cut-off events. [2024-05-12 12:15:57,996 INFO L125 PetriNetUnfolderBase]: For 264395/264395 co-relation queries the response was YES. [2024-05-12 12:15:58,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48628 conditions, 6298 events. 3645/6298 cut-off events. For 264395/264395 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 44441 event pairs, 465 based on Foata normal form. 10/6301 useless extension candidates. Maximal degree in co-relation 48441. Up to 4092 conditions per place. [2024-05-12 12:15:58,089 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 378 selfloop transitions, 231 changer transitions 0/615 dead transitions. [2024-05-12 12:15:58,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 615 transitions, 12115 flow [2024-05-12 12:15:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-05-12 12:15:58,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-05-12 12:15:58,090 INFO L175 Difference]: Start difference. First operand has 395 places, 567 transitions, 10571 flow. Second operand 10 states and 182 transitions. [2024-05-12 12:15:58,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 615 transitions, 12115 flow [2024-05-12 12:15:59,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 615 transitions, 11806 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-05-12 12:15:59,957 INFO L231 Difference]: Finished difference. Result has 398 places, 567 transitions, 10747 flow [2024-05-12 12:15:59,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10262, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10747, PETRI_PLACES=398, PETRI_TRANSITIONS=567} [2024-05-12 12:15:59,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-05-12 12:15:59,958 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 567 transitions, 10747 flow [2024-05-12 12:15:59,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:15:59,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:59,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:15:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 12:15:59,958 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:59,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 651164708, now seen corresponding path program 16 times [2024-05-12 12:15:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:59,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360196631] [2024-05-12 12:15:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360196631] [2024-05-12 12:16:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360196631] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:04,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:16:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518949840] [2024-05-12 12:16:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:16:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:16:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:16:05,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 567 transitions, 10747 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:07,441 INFO L124 PetriNetUnfolderBase]: 3661/6326 cut-off events. [2024-05-12 12:16:07,442 INFO L125 PetriNetUnfolderBase]: For 231955/231955 co-relation queries the response was YES. [2024-05-12 12:16:07,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49195 conditions, 6326 events. 3661/6326 cut-off events. For 231955/231955 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 44863 event pairs, 483 based on Foata normal form. 2/6326 useless extension candidates. Maximal degree in co-relation 49007. Up to 4698 conditions per place. [2024-05-12 12:16:07,544 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 423 selfloop transitions, 192 changer transitions 0/621 dead transitions. [2024-05-12 12:16:07,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 621 transitions, 12555 flow [2024-05-12 12:16:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-05-12 12:16:07,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-05-12 12:16:07,546 INFO L175 Difference]: Start difference. First operand has 398 places, 567 transitions, 10747 flow. Second operand 11 states and 193 transitions. [2024-05-12 12:16:07,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 621 transitions, 12555 flow [2024-05-12 12:16:09,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 621 transitions, 12147 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 12:16:09,623 INFO L231 Difference]: Finished difference. Result has 402 places, 570 transitions, 10822 flow [2024-05-12 12:16:09,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10339, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10822, PETRI_PLACES=402, PETRI_TRANSITIONS=570} [2024-05-12 12:16:09,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-05-12 12:16:09,624 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 570 transitions, 10822 flow [2024-05-12 12:16:09,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:09,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:09,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:09,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 12:16:09,625 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:09,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:09,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1125329222, now seen corresponding path program 17 times [2024-05-12 12:16:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501495816] [2024-05-12 12:16:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501495816] [2024-05-12 12:16:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501495816] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:16:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685264414] [2024-05-12 12:16:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:16:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:16:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:16:13,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:13,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 570 transitions, 10822 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:13,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:13,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:16,483 INFO L124 PetriNetUnfolderBase]: 3676/6351 cut-off events. [2024-05-12 12:16:16,484 INFO L125 PetriNetUnfolderBase]: For 236034/236034 co-relation queries the response was YES. [2024-05-12 12:16:16,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49117 conditions, 6351 events. 3676/6351 cut-off events. For 236034/236034 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 45165 event pairs, 507 based on Foata normal form. 2/6346 useless extension candidates. Maximal degree in co-relation 48928. Up to 4980 conditions per place. [2024-05-12 12:16:16,570 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 410 selfloop transitions, 204 changer transitions 0/620 dead transitions. [2024-05-12 12:16:16,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 620 transitions, 12438 flow [2024-05-12 12:16:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-05-12 12:16:16,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 12:16:16,572 INFO L175 Difference]: Start difference. First operand has 402 places, 570 transitions, 10822 flow. Second operand 11 states and 190 transitions. [2024-05-12 12:16:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 620 transitions, 12438 flow [2024-05-12 12:16:18,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 620 transitions, 11723 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-05-12 12:16:18,585 INFO L231 Difference]: Finished difference. Result has 403 places, 572 transitions, 10598 flow [2024-05-12 12:16:18,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10119, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10598, PETRI_PLACES=403, PETRI_TRANSITIONS=572} [2024-05-12 12:16:18,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-05-12 12:16:18,586 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 572 transitions, 10598 flow [2024-05-12 12:16:18,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:18,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:18,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:18,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 12:16:18,587 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:18,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2098158122, now seen corresponding path program 18 times [2024-05-12 12:16:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852651422] [2024-05-12 12:16:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852651422] [2024-05-12 12:16:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852651422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:23,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:16:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962045455] [2024-05-12 12:16:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:16:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:16:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:16:23,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:16:23,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 572 transitions, 10598 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:23,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:23,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:16:23,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:25,266 INFO L124 PetriNetUnfolderBase]: 3378/5894 cut-off events. [2024-05-12 12:16:25,266 INFO L125 PetriNetUnfolderBase]: For 240724/240724 co-relation queries the response was YES. [2024-05-12 12:16:25,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44221 conditions, 5894 events. 3378/5894 cut-off events. For 240724/240724 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 42827 event pairs, 503 based on Foata normal form. 4/5887 useless extension candidates. Maximal degree in co-relation 44032. Up to 4642 conditions per place. [2024-05-12 12:16:25,361 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 415 selfloop transitions, 196 changer transitions 0/621 dead transitions. [2024-05-12 12:16:25,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 621 transitions, 12202 flow [2024-05-12 12:16:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-05-12 12:16:25,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-05-12 12:16:25,363 INFO L175 Difference]: Start difference. First operand has 403 places, 572 transitions, 10598 flow. Second operand 11 states and 194 transitions. [2024-05-12 12:16:25,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 621 transitions, 12202 flow [2024-05-12 12:16:27,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 621 transitions, 11751 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-05-12 12:16:27,028 INFO L231 Difference]: Finished difference. Result has 406 places, 575 transitions, 10635 flow [2024-05-12 12:16:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10147, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10635, PETRI_PLACES=406, PETRI_TRANSITIONS=575} [2024-05-12 12:16:27,028 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-05-12 12:16:27,029 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 575 transitions, 10635 flow [2024-05-12 12:16:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:27,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:27,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 12:16:27,029 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:27,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 651344198, now seen corresponding path program 19 times [2024-05-12 12:16:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055925264] [2024-05-12 12:16:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055925264] [2024-05-12 12:16:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055925264] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:16:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046447020] [2024-05-12 12:16:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:16:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:16:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:16:32,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:32,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 575 transitions, 10635 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:32,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:32,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:32,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:34,529 INFO L124 PetriNetUnfolderBase]: 3732/6447 cut-off events. [2024-05-12 12:16:34,530 INFO L125 PetriNetUnfolderBase]: For 252262/252262 co-relation queries the response was YES. [2024-05-12 12:16:34,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48883 conditions, 6447 events. 3732/6447 cut-off events. For 252262/252262 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 45948 event pairs, 512 based on Foata normal form. 4/6444 useless extension candidates. Maximal degree in co-relation 48693. Up to 4603 conditions per place. [2024-05-12 12:16:34,633 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 417 selfloop transitions, 204 changer transitions 0/627 dead transitions. [2024-05-12 12:16:34,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 627 transitions, 12295 flow [2024-05-12 12:16:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:16:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:16:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 12:16:34,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:16:34,634 INFO L175 Difference]: Start difference. First operand has 406 places, 575 transitions, 10635 flow. Second operand 10 states and 180 transitions. [2024-05-12 12:16:34,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 627 transitions, 12295 flow [2024-05-12 12:16:36,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 627 transitions, 11841 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 12:16:36,938 INFO L231 Difference]: Finished difference. Result has 408 places, 578 transitions, 10691 flow [2024-05-12 12:16:36,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10181, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10691, PETRI_PLACES=408, PETRI_TRANSITIONS=578} [2024-05-12 12:16:36,939 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-05-12 12:16:36,939 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 578 transitions, 10691 flow [2024-05-12 12:16:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:36,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 12:16:36,940 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:36,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash -17693036, now seen corresponding path program 20 times [2024-05-12 12:16:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64127670] [2024-05-12 12:16:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:42,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:42,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64127670] [2024-05-12 12:16:42,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64127670] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:42,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:42,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:16:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558754142] [2024-05-12 12:16:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:42,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:16:42,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:16:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:16:42,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:42,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 578 transitions, 10691 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:42,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:42,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:42,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:45,062 INFO L124 PetriNetUnfolderBase]: 3844/6643 cut-off events. [2024-05-12 12:16:45,063 INFO L125 PetriNetUnfolderBase]: For 311330/311330 co-relation queries the response was YES. [2024-05-12 12:16:45,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51337 conditions, 6643 events. 3844/6643 cut-off events. For 311330/311330 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 47524 event pairs, 527 based on Foata normal form. 2/6638 useless extension candidates. Maximal degree in co-relation 51146. Up to 4560 conditions per place. [2024-05-12 12:16:45,174 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 422 selfloop transitions, 214 changer transitions 0/642 dead transitions. [2024-05-12 12:16:45,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 642 transitions, 12779 flow [2024-05-12 12:16:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-05-12 12:16:45,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-05-12 12:16:45,176 INFO L175 Difference]: Start difference. First operand has 408 places, 578 transitions, 10691 flow. Second operand 11 states and 203 transitions. [2024-05-12 12:16:45,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 642 transitions, 12779 flow [2024-05-12 12:16:47,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 642 transitions, 12307 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-05-12 12:16:47,689 INFO L231 Difference]: Finished difference. Result has 412 places, 584 transitions, 10910 flow [2024-05-12 12:16:47,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10219, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10910, PETRI_PLACES=412, PETRI_TRANSITIONS=584} [2024-05-12 12:16:47,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-05-12 12:16:47,690 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 584 transitions, 10910 flow [2024-05-12 12:16:47,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:47,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:47,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:47,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 12:16:47,690 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:47,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -9115088, now seen corresponding path program 8 times [2024-05-12 12:16:47,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:47,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441644155] [2024-05-12 12:16:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:47,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441644155] [2024-05-12 12:16:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441644155] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:16:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421630100] [2024-05-12 12:16:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:16:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:16:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:16:52,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:52,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 584 transitions, 10910 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:52,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:55,682 INFO L124 PetriNetUnfolderBase]: 3906/6753 cut-off events. [2024-05-12 12:16:55,682 INFO L125 PetriNetUnfolderBase]: For 362463/362463 co-relation queries the response was YES. [2024-05-12 12:16:55,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52032 conditions, 6753 events. 3906/6753 cut-off events. For 362463/362463 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 48521 event pairs, 535 based on Foata normal form. 12/6758 useless extension candidates. Maximal degree in co-relation 51839. Up to 4807 conditions per place. [2024-05-12 12:16:55,775 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 439 selfloop transitions, 197 changer transitions 0/642 dead transitions. [2024-05-12 12:16:55,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 642 transitions, 12639 flow [2024-05-12 12:16:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-05-12 12:16:55,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-05-12 12:16:55,776 INFO L175 Difference]: Start difference. First operand has 412 places, 584 transitions, 10910 flow. Second operand 11 states and 203 transitions. [2024-05-12 12:16:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 642 transitions, 12639 flow [2024-05-12 12:16:58,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 642 transitions, 12280 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-05-12 12:16:58,295 INFO L231 Difference]: Finished difference. Result has 416 places, 585 transitions, 11020 flow [2024-05-12 12:16:58,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10559, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11020, PETRI_PLACES=416, PETRI_TRANSITIONS=585} [2024-05-12 12:16:58,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-05-12 12:16:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 585 transitions, 11020 flow [2024-05-12 12:16:58,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:16:58,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:58,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:16:58,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 12:16:58,299 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:58,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash 651337688, now seen corresponding path program 21 times [2024-05-12 12:16:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:58,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240703940] [2024-05-12 12:16:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:03,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:03,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240703940] [2024-05-12 12:17:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240703940] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583722417] [2024-05-12 12:17:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:03,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:03,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:03,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 585 transitions, 11020 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:03,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:03,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:03,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:06,273 INFO L124 PetriNetUnfolderBase]: 3922/6781 cut-off events. [2024-05-12 12:17:06,274 INFO L125 PetriNetUnfolderBase]: For 313847/313847 co-relation queries the response was YES. [2024-05-12 12:17:06,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52785 conditions, 6781 events. 3922/6781 cut-off events. For 313847/313847 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 48785 event pairs, 558 based on Foata normal form. 2/6776 useless extension candidates. Maximal degree in co-relation 52590. Up to 4867 conditions per place. [2024-05-12 12:17:06,379 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 425 selfloop transitions, 207 changer transitions 0/638 dead transitions. [2024-05-12 12:17:06,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 638 transitions, 12710 flow [2024-05-12 12:17:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:17:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:17:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-05-12 12:17:06,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-05-12 12:17:06,380 INFO L175 Difference]: Start difference. First operand has 416 places, 585 transitions, 11020 flow. Second operand 10 states and 182 transitions. [2024-05-12 12:17:06,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 638 transitions, 12710 flow [2024-05-12 12:17:08,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 638 transitions, 12224 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-05-12 12:17:08,867 INFO L231 Difference]: Finished difference. Result has 417 places, 588 transitions, 11063 flow [2024-05-12 12:17:08,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10534, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11063, PETRI_PLACES=417, PETRI_TRANSITIONS=588} [2024-05-12 12:17:08,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-05-12 12:17:08,868 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 588 transitions, 11063 flow [2024-05-12 12:17:08,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:08,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:08,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:17:08,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 12:17:08,871 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:08,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:08,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2089576454, now seen corresponding path program 9 times [2024-05-12 12:17:08,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834771254] [2024-05-12 12:17:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:14,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:14,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834771254] [2024-05-12 12:17:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834771254] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:14,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:14,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:17:14,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389729180] [2024-05-12 12:17:14,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:14,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:17:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:17:14,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:17:14,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:14,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 588 transitions, 11063 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:14,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:14,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:14,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:16,869 INFO L124 PetriNetUnfolderBase]: 4014/6949 cut-off events. [2024-05-12 12:17:16,869 INFO L125 PetriNetUnfolderBase]: For 385233/385233 co-relation queries the response was YES. [2024-05-12 12:17:16,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54233 conditions, 6949 events. 4014/6949 cut-off events. For 385233/385233 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 50169 event pairs, 575 based on Foata normal form. 8/6950 useless extension candidates. Maximal degree in co-relation 54037. Up to 4635 conditions per place. [2024-05-12 12:17:16,982 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 448 selfloop transitions, 196 changer transitions 0/650 dead transitions. [2024-05-12 12:17:16,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 650 transitions, 13091 flow [2024-05-12 12:17:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-05-12 12:17:16,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-05-12 12:17:16,984 INFO L175 Difference]: Start difference. First operand has 417 places, 588 transitions, 11063 flow. Second operand 11 states and 205 transitions. [2024-05-12 12:17:16,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 650 transitions, 13091 flow [2024-05-12 12:17:19,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 650 transitions, 12602 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-05-12 12:17:19,948 INFO L231 Difference]: Finished difference. Result has 420 places, 590 transitions, 11100 flow [2024-05-12 12:17:19,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10574, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11100, PETRI_PLACES=420, PETRI_TRANSITIONS=590} [2024-05-12 12:17:19,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-05-12 12:17:19,949 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 590 transitions, 11100 flow [2024-05-12 12:17:19,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:19,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:19,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:17:19,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 12:17:19,950 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:19,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:19,951 INFO L85 PathProgramCache]: Analyzing trace with hash -954834916, now seen corresponding path program 10 times [2024-05-12 12:17:19,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:19,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261937374] [2024-05-12 12:17:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261937374] [2024-05-12 12:17:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261937374] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:17:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353098969] [2024-05-12 12:17:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:24,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:17:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:17:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:17:24,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:24,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 590 transitions, 11100 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:24,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:24,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:24,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:27,680 INFO L124 PetriNetUnfolderBase]: 4106/7117 cut-off events. [2024-05-12 12:17:27,680 INFO L125 PetriNetUnfolderBase]: For 430620/430620 co-relation queries the response was YES. [2024-05-12 12:17:27,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55912 conditions, 7117 events. 4106/7117 cut-off events. For 430620/430620 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 51722 event pairs, 627 based on Foata normal form. 8/7118 useless extension candidates. Maximal degree in co-relation 55715. Up to 4780 conditions per place. [2024-05-12 12:17:27,803 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 433 selfloop transitions, 210 changer transitions 0/649 dead transitions. [2024-05-12 12:17:27,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 649 transitions, 13108 flow [2024-05-12 12:17:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-05-12 12:17:27,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-05-12 12:17:27,804 INFO L175 Difference]: Start difference. First operand has 420 places, 590 transitions, 11100 flow. Second operand 11 states and 202 transitions. [2024-05-12 12:17:27,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 649 transitions, 13108 flow [2024-05-12 12:17:31,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 649 transitions, 12805 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 12:17:31,402 INFO L231 Difference]: Finished difference. Result has 424 places, 592 transitions, 11357 flow [2024-05-12 12:17:31,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10797, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11357, PETRI_PLACES=424, PETRI_TRANSITIONS=592} [2024-05-12 12:17:31,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-05-12 12:17:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 592 transitions, 11357 flow [2024-05-12 12:17:31,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:31,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:31,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:17:31,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 12:17:31,404 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:31,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -612546556, now seen corresponding path program 11 times [2024-05-12 12:17:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:31,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821818546] [2024-05-12 12:17:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:31,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821818546] [2024-05-12 12:17:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821818546] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:17:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150584783] [2024-05-12 12:17:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:36,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:17:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:17:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:17:36,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:36,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 592 transitions, 11357 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:36,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:36,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:36,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:39,859 INFO L124 PetriNetUnfolderBase]: 4093/7094 cut-off events. [2024-05-12 12:17:39,859 INFO L125 PetriNetUnfolderBase]: For 388820/388820 co-relation queries the response was YES. [2024-05-12 12:17:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55433 conditions, 7094 events. 4093/7094 cut-off events. For 388820/388820 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 51542 event pairs, 628 based on Foata normal form. 10/7097 useless extension candidates. Maximal degree in co-relation 55234. Up to 5148 conditions per place. [2024-05-12 12:17:40,131 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 429 selfloop transitions, 210 changer transitions 0/645 dead transitions. [2024-05-12 12:17:40,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 645 transitions, 12995 flow [2024-05-12 12:17:40,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-05-12 12:17:40,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-05-12 12:17:40,133 INFO L175 Difference]: Start difference. First operand has 424 places, 592 transitions, 11357 flow. Second operand 11 states and 200 transitions. [2024-05-12 12:17:40,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 645 transitions, 12995 flow [2024-05-12 12:17:43,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 645 transitions, 12573 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-05-12 12:17:43,308 INFO L231 Difference]: Finished difference. Result has 427 places, 592 transitions, 11363 flow [2024-05-12 12:17:43,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10935, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11363, PETRI_PLACES=427, PETRI_TRANSITIONS=592} [2024-05-12 12:17:43,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-05-12 12:17:43,309 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 592 transitions, 11363 flow [2024-05-12 12:17:43,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:43,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:43,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:17:43,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 12:17:43,310 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:43,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash -955133446, now seen corresponding path program 12 times [2024-05-12 12:17:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490611087] [2024-05-12 12:17:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:48,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490611087] [2024-05-12 12:17:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490611087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:17:48,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381232635] [2024-05-12 12:17:48,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:48,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:17:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:17:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:17:48,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:48,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 592 transitions, 11363 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:48,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:48,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:48,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:51,457 INFO L124 PetriNetUnfolderBase]: 4083/7076 cut-off events. [2024-05-12 12:17:51,457 INFO L125 PetriNetUnfolderBase]: For 327326/327326 co-relation queries the response was YES. [2024-05-12 12:17:51,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54549 conditions, 7076 events. 4083/7076 cut-off events. For 327326/327326 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 51330 event pairs, 622 based on Foata normal form. 10/7079 useless extension candidates. Maximal degree in co-relation 54349. Up to 5550 conditions per place. [2024-05-12 12:17:51,566 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 430 selfloop transitions, 211 changer transitions 0/647 dead transitions. [2024-05-12 12:17:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 647 transitions, 13072 flow [2024-05-12 12:17:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-05-12 12:17:51,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-05-12 12:17:51,568 INFO L175 Difference]: Start difference. First operand has 427 places, 592 transitions, 11363 flow. Second operand 11 states and 197 transitions. [2024-05-12 12:17:51,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 647 transitions, 13072 flow [2024-05-12 12:17:54,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 647 transitions, 12594 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-05-12 12:17:54,510 INFO L231 Difference]: Finished difference. Result has 428 places, 594 transitions, 11387 flow [2024-05-12 12:17:54,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10907, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11387, PETRI_PLACES=428, PETRI_TRANSITIONS=594} [2024-05-12 12:17:54,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-05-12 12:17:54,511 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 594 transitions, 11387 flow [2024-05-12 12:17:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:54,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:54,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:17:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 12:17:54,512 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:54,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash 657839876, now seen corresponding path program 13 times [2024-05-12 12:17:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557388803] [2024-05-12 12:17:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557388803] [2024-05-12 12:17:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557388803] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013410571] [2024-05-12 12:17:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:59,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:59,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 594 transitions, 11387 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:17:59,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:59,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:59,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:02,476 INFO L124 PetriNetUnfolderBase]: 4148/7191 cut-off events. [2024-05-12 12:18:02,476 INFO L125 PetriNetUnfolderBase]: For 335035/335035 co-relation queries the response was YES. [2024-05-12 12:18:02,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55214 conditions, 7191 events. 4148/7191 cut-off events. For 335035/335035 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 52397 event pairs, 650 based on Foata normal form. 10/7194 useless extension candidates. Maximal degree in co-relation 55013. Up to 5631 conditions per place. [2024-05-12 12:18:02,828 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 450 selfloop transitions, 189 changer transitions 0/645 dead transitions. [2024-05-12 12:18:02,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 645 transitions, 13098 flow [2024-05-12 12:18:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-05-12 12:18:02,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-05-12 12:18:02,830 INFO L175 Difference]: Start difference. First operand has 428 places, 594 transitions, 11387 flow. Second operand 10 states and 181 transitions. [2024-05-12 12:18:02,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 645 transitions, 13098 flow [2024-05-12 12:18:05,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 645 transitions, 12675 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-05-12 12:18:05,524 INFO L231 Difference]: Finished difference. Result has 429 places, 597 transitions, 11464 flow [2024-05-12 12:18:05,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10964, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11464, PETRI_PLACES=429, PETRI_TRANSITIONS=597} [2024-05-12 12:18:05,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 387 predicate places. [2024-05-12 12:18:05,525 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 597 transitions, 11464 flow [2024-05-12 12:18:05,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:05,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:05,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:18:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 12:18:05,525 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:05,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 694660072, now seen corresponding path program 22 times [2024-05-12 12:18:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:05,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997868511] [2024-05-12 12:18:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:18:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997868511] [2024-05-12 12:18:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997868511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:10,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:18:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727176812] [2024-05-12 12:18:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:18:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:18:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:18:10,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:10,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 597 transitions, 11464 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:10,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:10,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:10,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:13,650 INFO L124 PetriNetUnfolderBase]: 4163/7216 cut-off events. [2024-05-12 12:18:13,650 INFO L125 PetriNetUnfolderBase]: For 295392/295392 co-relation queries the response was YES. [2024-05-12 12:18:13,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55274 conditions, 7216 events. 4163/7216 cut-off events. For 295392/295392 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 52715 event pairs, 644 based on Foata normal form. 2/7211 useless extension candidates. Maximal degree in co-relation 55072. Up to 5845 conditions per place. [2024-05-12 12:18:13,762 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 457 selfloop transitions, 182 changer transitions 0/645 dead transitions. [2024-05-12 12:18:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 645 transitions, 13128 flow [2024-05-12 12:18:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 12:18:13,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-05-12 12:18:13,764 INFO L175 Difference]: Start difference. First operand has 429 places, 597 transitions, 11464 flow. Second operand 10 states and 176 transitions. [2024-05-12 12:18:13,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 645 transitions, 13128 flow [2024-05-12 12:18:16,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 645 transitions, 12681 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-05-12 12:18:16,836 INFO L231 Difference]: Finished difference. Result has 431 places, 599 transitions, 11472 flow [2024-05-12 12:18:16,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11017, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11472, PETRI_PLACES=431, PETRI_TRANSITIONS=599} [2024-05-12 12:18:16,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-05-12 12:18:16,837 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 599 transitions, 11472 flow [2024-05-12 12:18:16,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:16,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:16,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:18:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 12:18:16,837 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1201226248, now seen corresponding path program 23 times [2024-05-12 12:18:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056993625] [2024-05-12 12:18:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:18:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056993625] [2024-05-12 12:18:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056993625] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:18:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687869426] [2024-05-12 12:18:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:18:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:18:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:18:21,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:21,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 599 transitions, 11472 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:21,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:21,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:21,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:24,777 INFO L124 PetriNetUnfolderBase]: 4176/7239 cut-off events. [2024-05-12 12:18:24,777 INFO L125 PetriNetUnfolderBase]: For 294108/294108 co-relation queries the response was YES. [2024-05-12 12:18:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54994 conditions, 7239 events. 4176/7239 cut-off events. For 294108/294108 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 52778 event pairs, 648 based on Foata normal form. 4/7236 useless extension candidates. Maximal degree in co-relation 54791. Up to 5850 conditions per place. [2024-05-12 12:18:24,892 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 467 selfloop transitions, 180 changer transitions 0/653 dead transitions. [2024-05-12 12:18:24,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 653 transitions, 13222 flow [2024-05-12 12:18:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 12:18:24,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 12:18:24,893 INFO L175 Difference]: Start difference. First operand has 431 places, 599 transitions, 11472 flow. Second operand 10 states and 178 transitions. [2024-05-12 12:18:24,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 653 transitions, 13222 flow [2024-05-12 12:18:27,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 653 transitions, 12732 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-05-12 12:18:27,853 INFO L231 Difference]: Finished difference. Result has 432 places, 602 transitions, 11466 flow [2024-05-12 12:18:27,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10982, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11466, PETRI_PLACES=432, PETRI_TRANSITIONS=602} [2024-05-12 12:18:27,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-05-12 12:18:27,854 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 602 transitions, 11466 flow [2024-05-12 12:18:27,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:27,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:27,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:18:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 12:18:27,863 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:27,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1192644580, now seen corresponding path program 14 times [2024-05-12 12:18:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422589009] [2024-05-12 12:18:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:18:32,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422589009] [2024-05-12 12:18:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422589009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:32,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:18:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658941493] [2024-05-12 12:18:32,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:32,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:18:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:18:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:18:33,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 602 transitions, 11466 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:33,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:36,118 INFO L124 PetriNetUnfolderBase]: 4304/7467 cut-off events. [2024-05-12 12:18:36,119 INFO L125 PetriNetUnfolderBase]: For 393522/393522 co-relation queries the response was YES. [2024-05-12 12:18:36,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57439 conditions, 7467 events. 4304/7467 cut-off events. For 393522/393522 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 54783 event pairs, 672 based on Foata normal form. 8/7468 useless extension candidates. Maximal degree in co-relation 57235. Up to 5142 conditions per place. [2024-05-12 12:18:36,240 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 464 selfloop transitions, 187 changer transitions 0/657 dead transitions. [2024-05-12 12:18:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 657 transitions, 13484 flow [2024-05-12 12:18:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-05-12 12:18:36,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-05-12 12:18:36,242 INFO L175 Difference]: Start difference. First operand has 432 places, 602 transitions, 11466 flow. Second operand 10 states and 186 transitions. [2024-05-12 12:18:36,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 657 transitions, 13484 flow [2024-05-12 12:18:39,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 657 transitions, 13032 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-05-12 12:18:39,338 INFO L231 Difference]: Finished difference. Result has 434 places, 604 transitions, 11535 flow [2024-05-12 12:18:39,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11014, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11535, PETRI_PLACES=434, PETRI_TRANSITIONS=604} [2024-05-12 12:18:39,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-05-12 12:18:39,339 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 604 transitions, 11535 flow [2024-05-12 12:18:39,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:39,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:39,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:18:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 12:18:39,339 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:39,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1479899720, now seen corresponding path program 15 times [2024-05-12 12:18:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187227350] [2024-05-12 12:18:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:18:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:44,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187227350] [2024-05-12 12:18:44,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187227350] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:44,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:44,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:18:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666811968] [2024-05-12 12:18:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:18:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:18:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:18:44,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:44,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 604 transitions, 11535 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:44,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:44,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:44,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:47,623 INFO L124 PetriNetUnfolderBase]: 4318/7497 cut-off events. [2024-05-12 12:18:47,623 INFO L125 PetriNetUnfolderBase]: For 373668/373668 co-relation queries the response was YES. [2024-05-12 12:18:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57062 conditions, 7497 events. 4318/7497 cut-off events. For 373668/373668 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 54896 event pairs, 656 based on Foata normal form. 8/7498 useless extension candidates. Maximal degree in co-relation 56857. Up to 3712 conditions per place. [2024-05-12 12:18:47,756 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 235 changer transitions 0/671 dead transitions. [2024-05-12 12:18:47,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 671 transitions, 13635 flow [2024-05-12 12:18:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:18:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:18:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-05-12 12:18:47,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-05-12 12:18:47,758 INFO L175 Difference]: Start difference. First operand has 434 places, 604 transitions, 11535 flow. Second operand 12 states and 218 transitions. [2024-05-12 12:18:47,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 671 transitions, 13635 flow [2024-05-12 12:18:50,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 671 transitions, 13342 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 12:18:50,865 INFO L231 Difference]: Finished difference. Result has 440 places, 605 transitions, 11790 flow [2024-05-12 12:18:50,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11242, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11790, PETRI_PLACES=440, PETRI_TRANSITIONS=605} [2024-05-12 12:18:50,866 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-05-12 12:18:50,866 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 605 transitions, 11790 flow [2024-05-12 12:18:50,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:50,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:50,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:18:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 12:18:50,867 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:50,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1192654810, now seen corresponding path program 16 times [2024-05-12 12:18:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626804257] [2024-05-12 12:18:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:50,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:18:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626804257] [2024-05-12 12:18:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626804257] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:18:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210681982] [2024-05-12 12:18:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:55,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:18:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:18:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:18:55,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:55,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 605 transitions, 11790 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:18:55,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:55,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:55,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:58,613 INFO L124 PetriNetUnfolderBase]: 4347/7552 cut-off events. [2024-05-12 12:18:58,614 INFO L125 PetriNetUnfolderBase]: For 363599/363599 co-relation queries the response was YES. [2024-05-12 12:18:58,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57799 conditions, 7552 events. 4347/7552 cut-off events. For 363599/363599 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 55577 event pairs, 705 based on Foata normal form. 10/7555 useless extension candidates. Maximal degree in co-relation 57592. Up to 5606 conditions per place. [2024-05-12 12:18:58,735 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 463 selfloop transitions, 187 changer transitions 0/656 dead transitions. [2024-05-12 12:18:58,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 656 transitions, 13488 flow [2024-05-12 12:18:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 12:18:58,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 12:18:58,736 INFO L175 Difference]: Start difference. First operand has 440 places, 605 transitions, 11790 flow. Second operand 10 states and 184 transitions. [2024-05-12 12:18:58,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 656 transitions, 13488 flow [2024-05-12 12:19:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 656 transitions, 12962 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-05-12 12:19:01,630 INFO L231 Difference]: Finished difference. Result has 440 places, 606 transitions, 11704 flow [2024-05-12 12:19:01,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11264, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11704, PETRI_PLACES=440, PETRI_TRANSITIONS=606} [2024-05-12 12:19:01,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-05-12 12:19:01,630 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 606 transitions, 11704 flow [2024-05-12 12:19:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:19:01,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:19:01,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:19:01,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 12:19:01,631 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:19:01,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:19:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1201232758, now seen corresponding path program 24 times [2024-05-12 12:19:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:19:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036608504] [2024-05-12 12:19:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:19:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:19:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15