./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.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.oepc_pso.oepc_rmo.oepc.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.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:05:11,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:05:11,262 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:05:11,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:05:11,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:05:11,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:05:11,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:05:11,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:05:11,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:05:11,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:05:11,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:05:11,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:05:11,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:05:11,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:05:11,300 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:05:11,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:05:11,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:05:11,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:05:11,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:05:11,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:05:11,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:05:11,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:05:11,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:05:11,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:05:11,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:05:11,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:05:11,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:05:11,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:05:11,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:05:11,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:05:11,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:05:11,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:05:11,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:05:11,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:05:11,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:05:11,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:05:11,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:05:11,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:05:11,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:05:11,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:05:11,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:05:11,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:05:11,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:05:11,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:05:11,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:05:11,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:05:11,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:05:11,514 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:05:11,515 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:05:11,516 INFO L431 ainManager$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.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 12:05:11,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:05:11,710 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:05:11,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 12:05:12,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:05:13,056 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:05:13,057 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 12:05:13,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dedc1a92/482c193fba994b4186d0b5daf222147e/FLAG815dc05a6 [2024-05-12 12:05:13,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dedc1a92/482c193fba994b4186d0b5daf222147e [2024-05-12 12:05:13,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:05:13,097 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:05:13,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:05:13,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:05:13,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:05:13,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:11" (1/2) ... [2024-05-12 12:05:13,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5f53bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:05:13, skipping insertion in model container [2024-05-12 12:05:13,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:11" (1/2) ... [2024-05-12 12:05:13,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@96a1d46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:05:13, skipping insertion in model container [2024-05-12 12:05:13,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:05:13" (2/2) ... [2024-05-12 12:05:13,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5f53bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13, skipping insertion in model container [2024-05-12 12:05:13,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:05:13" (2/2) ... [2024-05-12 12:05:13,110 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:05:13,172 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:05:13,173 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 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$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 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$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 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$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 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 )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 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 )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$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)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 12:05:13,174 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 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 )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 12:05:13,174 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:05:13,174 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-05-12 12:05:13,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:05:13,383 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.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 12:05:13,605 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:05:13,616 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:05:13,650 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.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:05:13,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:05:13,896 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:05:13,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13 WrapperNode [2024-05-12 12:05:13,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:05:13,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:05:13,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:05:13,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:05:13,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:13,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:13,987 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-05-12 12:05:13,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:05:13,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:05:13,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:05:13,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:05:13,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:13,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,050 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 12:05:14,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:05:14,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:05:14,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:05:14,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:05:14,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (1/1) ... [2024-05-12 12:05:14,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:05:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:05:14,120 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 12:05:14,138 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 12:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:05:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:05:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:05:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:05:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:05:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:05:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 12:05:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 12:05:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 12:05:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 12:05:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:05:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:05:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:05:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:05:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:05:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:05:14,155 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 12:05:14,251 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:05:14,253 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:05:14,866 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:05:14,867 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:05:15,087 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:05:15,088 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:05:15,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:05:15 BoogieIcfgContainer [2024-05-12 12:05:15,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:05:15,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:05:15,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:05:15,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:05:15,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:05:11" (1/4) ... [2024-05-12 12:05:15,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fa9e99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:05:15, skipping insertion in model container [2024-05-12 12:05:15,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:05:13" (2/4) ... [2024-05-12 12:05:15,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fa9e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:05:15, skipping insertion in model container [2024-05-12 12:05:15,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:05:13" (3/4) ... [2024-05-12 12:05:15,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fa9e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:05:15, skipping insertion in model container [2024-05-12 12:05:15,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:05:15" (4/4) ... [2024-05-12 12:05:15,109 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 12:05:15,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:05:15,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:05:15,123 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:05:15,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:05:15,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 12:05:15,249 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-05-12 12:05:15,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:05:15,261 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 4. Compared 54 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 12:05:15,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 12:05:15,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-05-12 12:05:15,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:05:15,278 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;@51a6cd41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:05:15,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 12:05:15,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:05:15,288 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:05:15,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:05:15,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:15,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:05:15,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1095263490, now seen corresponding path program 1 times [2024-05-12 12:05:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455153403] [2024-05-12 12:05:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:18,837 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 12:05:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455153403] [2024-05-12 12:05:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455153403] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:05:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200017736] [2024-05-12 12:05:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:05:18,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:05:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:05:18,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:05:18,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:18,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:19,457 INFO L124 PetriNetUnfolderBase]: 740/1224 cut-off events. [2024-05-12 12:05:19,457 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 12:05:19,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1224 events. 740/1224 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5983 event pairs, 280 based on Foata normal form. 57/1205 useless extension candidates. Maximal degree in co-relation 2447. Up to 1205 conditions per place. [2024-05-12 12:05:19,466 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 36 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-05-12 12:05:19,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 183 flow [2024-05-12 12:05:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:05:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:05:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-05-12 12:05:19,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-05-12 12:05:19,477 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 71 transitions. [2024-05-12 12:05:19,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 183 flow [2024-05-12 12:05:19,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:19,482 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-05-12 12:05:19,483 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 12:05:19,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 12:05:19,486 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-05-12 12:05:19,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:05:19,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:19,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:05:19,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:05:19,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:19,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1095263181, now seen corresponding path program 1 times [2024-05-12 12:05:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:19,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643328221] [2024-05-12 12:05:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:19,533 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 12:05:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643328221] [2024-05-12 12:05:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643328221] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:19,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:19,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:05:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314974976] [2024-05-12 12:05:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:05:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:05:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:05:19,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-05-12 12:05:19,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 12:05:19,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-05-12 12:05:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:19,675 INFO L124 PetriNetUnfolderBase]: 247/556 cut-off events. [2024-05-12 12:05:19,676 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-05-12 12:05:19,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 556 events. 247/556 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3092 event pairs, 151 based on Foata normal form. 0/527 useless extension candidates. Maximal degree in co-relation 1054. Up to 364 conditions per place. [2024-05-12 12:05:19,679 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 29 selfloop transitions, 3 changer transitions 2/49 dead transitions. [2024-05-12 12:05:19,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 189 flow [2024-05-12 12:05:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:05:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:05:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-05-12 12:05:19,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-05-12 12:05:19,681 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 3 states and 82 transitions. [2024-05-12 12:05:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 189 flow [2024-05-12 12:05:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:19,683 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 94 flow [2024-05-12 12:05:19,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-05-12 12:05:19,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 12:05:19,684 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 94 flow [2024-05-12 12:05:19,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 12:05:19,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:19,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:19,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:05:19,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash -281186564, now seen corresponding path program 1 times [2024-05-12 12:05:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699634581] [2024-05-12 12:05:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:22,176 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 12:05:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699634581] [2024-05-12 12:05:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699634581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:22,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:05:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081809294] [2024-05-12 12:05:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:05:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:05:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:05:22,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:22,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 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 12:05:22,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:22,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:22,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:22,518 INFO L124 PetriNetUnfolderBase]: 546/1023 cut-off events. [2024-05-12 12:05:22,518 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-05-12 12:05:22,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1023 events. 546/1023 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5327 event pairs, 287 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2144. Up to 886 conditions per place. [2024-05-12 12:05:22,523 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 40 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-05-12 12:05:22,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 234 flow [2024-05-12 12:05:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:05:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:05:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-05-12 12:05:22,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 12:05:22,525 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 4 states and 82 transitions. [2024-05-12 12:05:22,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 234 flow [2024-05-12 12:05:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:22,527 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 137 flow [2024-05-12 12:05:22,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, 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=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-05-12 12:05:22,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-05-12 12:05:22,528 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 137 flow [2024-05-12 12:05:22,528 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 12:05:22,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:22,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:22,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:05:22,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:22,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash -126847557, now seen corresponding path program 1 times [2024-05-12 12:05:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:22,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106789024] [2024-05-12 12:05:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:24,483 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 12:05:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106789024] [2024-05-12 12:05:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106789024] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:24,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:05:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287826146] [2024-05-12 12:05:24,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:05:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:05:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:05:24,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:24,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 137 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 12:05:24,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:24,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:24,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:24,824 INFO L124 PetriNetUnfolderBase]: 570/1072 cut-off events. [2024-05-12 12:05:24,824 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-05-12 12:05:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 1072 events. 570/1072 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5721 event pairs, 232 based on Foata normal form. 3/1034 useless extension candidates. Maximal degree in co-relation 2413. Up to 861 conditions per place. [2024-05-12 12:05:24,829 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 52 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-05-12 12:05:24,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 359 flow [2024-05-12 12:05:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:05:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:05:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-05-12 12:05:24,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631578947368421 [2024-05-12 12:05:24,831 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 137 flow. Second operand 5 states and 107 transitions. [2024-05-12 12:05:24,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 359 flow [2024-05-12 12:05:24,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:24,833 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 218 flow [2024-05-12 12:05:24,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-05-12 12:05:24,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-05-12 12:05:24,834 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 218 flow [2024-05-12 12:05:24,834 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 12:05:24,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:24,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:05:24,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:24,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 612045065, now seen corresponding path program 1 times [2024-05-12 12:05:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489786225] [2024-05-12 12:05:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:27,340 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 12:05:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489786225] [2024-05-12 12:05:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489786225] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:05:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585799237] [2024-05-12 12:05:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:05:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:05:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:05:27,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:27,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:27,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:27,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:27,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:27,763 INFO L124 PetriNetUnfolderBase]: 584/1094 cut-off events. [2024-05-12 12:05:27,764 INFO L125 PetriNetUnfolderBase]: For 1026/1026 co-relation queries the response was YES. [2024-05-12 12:05:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1094 events. 584/1094 cut-off events. For 1026/1026 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5836 event pairs, 174 based on Foata normal form. 3/1056 useless extension candidates. Maximal degree in co-relation 2898. Up to 856 conditions per place. [2024-05-12 12:05:27,769 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 59 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-05-12 12:05:27,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 478 flow [2024-05-12 12:05:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-05-12 12:05:27,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-05-12 12:05:27,770 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 218 flow. Second operand 6 states and 127 transitions. [2024-05-12 12:05:27,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 478 flow [2024-05-12 12:05:27,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 474 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 12:05:27,773 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 281 flow [2024-05-12 12:05:27,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-05-12 12:05:27,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-05-12 12:05:27,774 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 281 flow [2024-05-12 12:05:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:05:27,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:27,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1793529228, now seen corresponding path program 1 times [2024-05-12 12:05:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658181542] [2024-05-12 12:05:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658181542] [2024-05-12 12:05:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658181542] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:30,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:30,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:30,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583869946] [2024-05-12 12:05:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:30,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:30,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:30,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:05:30,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 281 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 12:05:30,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:30,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:05:30,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:30,601 INFO L124 PetriNetUnfolderBase]: 604/1130 cut-off events. [2024-05-12 12:05:30,601 INFO L125 PetriNetUnfolderBase]: For 1531/1531 co-relation queries the response was YES. [2024-05-12 12:05:30,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3367 conditions, 1130 events. 604/1130 cut-off events. For 1531/1531 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6099 event pairs, 115 based on Foata normal form. 6/1095 useless extension candidates. Maximal degree in co-relation 3342. Up to 838 conditions per place. [2024-05-12 12:05:30,608 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 63 selfloop transitions, 20 changer transitions 0/90 dead transitions. [2024-05-12 12:05:30,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 571 flow [2024-05-12 12:05:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-05-12 12:05:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375939849624061 [2024-05-12 12:05:30,609 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 281 flow. Second operand 7 states and 143 transitions. [2024-05-12 12:05:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 571 flow [2024-05-12 12:05:30,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 534 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 12:05:30,613 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 306 flow [2024-05-12 12:05:30,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-05-12 12:05:30,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-05-12 12:05:30,614 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 306 flow [2024-05-12 12:05:30,615 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 12:05:30,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:30,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:30,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:05:30,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:30,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1865027971, now seen corresponding path program 1 times [2024-05-12 12:05:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:30,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342086263] [2024-05-12 12:05:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:33,821 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 12:05:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342086263] [2024-05-12 12:05:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342086263] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:05:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137867652] [2024-05-12 12:05:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:05:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:05:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:05:33,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:33,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:33,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:33,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:33,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:34,279 INFO L124 PetriNetUnfolderBase]: 691/1316 cut-off events. [2024-05-12 12:05:34,280 INFO L125 PetriNetUnfolderBase]: For 2063/2063 co-relation queries the response was YES. [2024-05-12 12:05:34,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1316 events. 691/1316 cut-off events. For 2063/2063 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7106 event pairs, 233 based on Foata normal form. 1/1259 useless extension candidates. Maximal degree in co-relation 3966. Up to 1117 conditions per place. [2024-05-12 12:05:34,288 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 54 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-05-12 12:05:34,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 484 flow [2024-05-12 12:05:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:05:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:05:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-05-12 12:05:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-05-12 12:05:34,290 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 306 flow. Second operand 5 states and 86 transitions. [2024-05-12 12:05:34,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 484 flow [2024-05-12 12:05:34,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 434 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 12:05:34,295 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 302 flow [2024-05-12 12:05:34,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-05-12 12:05:34,297 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-05-12 12:05:34,297 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 302 flow [2024-05-12 12:05:34,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:05:34,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:34,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:34,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:05:34,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:34,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1945285284, now seen corresponding path program 1 times [2024-05-12 12:05:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239645283] [2024-05-12 12:05:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:37,970 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 12:05:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239645283] [2024-05-12 12:05:37,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239645283] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:37,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425797611] [2024-05-12 12:05:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:37,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:37,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:38,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:38,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 302 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 12:05:38,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:38,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:38,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:38,500 INFO L124 PetriNetUnfolderBase]: 689/1295 cut-off events. [2024-05-12 12:05:38,500 INFO L125 PetriNetUnfolderBase]: For 2211/2211 co-relation queries the response was YES. [2024-05-12 12:05:38,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 1295 events. 689/1295 cut-off events. For 2211/2211 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6949 event pairs, 231 based on Foata normal form. 1/1244 useless extension candidates. Maximal degree in co-relation 3862. Up to 1111 conditions per place. [2024-05-12 12:05:38,507 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 58 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-05-12 12:05:38,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 545 flow [2024-05-12 12:05:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:05:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:05:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-05-12 12:05:38,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 12:05:38,513 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 302 flow. Second operand 6 states and 99 transitions. [2024-05-12 12:05:38,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 545 flow [2024-05-12 12:05:38,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 520 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 12:05:38,518 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 406 flow [2024-05-12 12:05:38,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-05-12 12:05:38,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-05-12 12:05:38,520 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 406 flow [2024-05-12 12:05:38,521 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 12:05:38,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:38,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:05:38,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:38,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash 167658015, now seen corresponding path program 1 times [2024-05-12 12:05:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175045285] [2024-05-12 12:05:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:42,001 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 12:05:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175045285] [2024-05-12 12:05:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175045285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32661255] [2024-05-12 12:05:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:42,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:42,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 406 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 12:05:42,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:42,506 INFO L124 PetriNetUnfolderBase]: 782/1482 cut-off events. [2024-05-12 12:05:42,507 INFO L125 PetriNetUnfolderBase]: For 3103/3103 co-relation queries the response was YES. [2024-05-12 12:05:42,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 1482 events. 782/1482 cut-off events. For 3103/3103 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8121 event pairs, 377 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 4709. Up to 1141 conditions per place. [2024-05-12 12:05:42,517 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 72 selfloop transitions, 27 changer transitions 0/105 dead transitions. [2024-05-12 12:05:42,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 812 flow [2024-05-12 12:05:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-05-12 12:05:42,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-05-12 12:05:42,518 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 406 flow. Second operand 7 states and 117 transitions. [2024-05-12 12:05:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 812 flow [2024-05-12 12:05:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 790 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:42,525 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 600 flow [2024-05-12 12:05:42,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-05-12 12:05:42,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-05-12 12:05:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 600 flow [2024-05-12 12:05:42,526 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 12:05:42,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:42,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:05:42,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:42,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1983968187, now seen corresponding path program 2 times [2024-05-12 12:05:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420981169] [2024-05-12 12:05:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:46,062 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 12:05:46,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:46,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420981169] [2024-05-12 12:05:46,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420981169] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:46,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:46,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931304195] [2024-05-12 12:05:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:46,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:46,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 600 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 12:05:46,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:46,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:46,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:46,667 INFO L124 PetriNetUnfolderBase]: 849/1571 cut-off events. [2024-05-12 12:05:46,667 INFO L125 PetriNetUnfolderBase]: For 4596/4596 co-relation queries the response was YES. [2024-05-12 12:05:46,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1571 events. 849/1571 cut-off events. For 4596/4596 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8780 event pairs, 153 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 5715. Up to 1189 conditions per place. [2024-05-12 12:05:46,676 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 93 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-05-12 12:05:46,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 133 transitions, 1181 flow [2024-05-12 12:05:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-05-12 12:05:46,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699248120300752 [2024-05-12 12:05:46,678 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 600 flow. Second operand 7 states and 125 transitions. [2024-05-12 12:05:46,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 133 transitions, 1181 flow [2024-05-12 12:05:46,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 1163 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-05-12 12:05:46,687 INFO L231 Difference]: Finished difference. Result has 80 places, 102 transitions, 878 flow [2024-05-12 12:05:46,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=80, PETRI_TRANSITIONS=102} [2024-05-12 12:05:46,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-05-12 12:05:46,688 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 102 transitions, 878 flow [2024-05-12 12:05:46,689 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 12:05:46,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:46,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:46,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:05:46,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:46,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:46,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1290563265, now seen corresponding path program 3 times [2024-05-12 12:05:46,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:46,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606916892] [2024-05-12 12:05:46,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:46,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606916892] [2024-05-12 12:05:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606916892] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:50,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:50,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:05:50,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517733169] [2024-05-12 12:05:50,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:50,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:05:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:05:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:05:50,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:50,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 102 transitions, 878 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 12:05:50,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:50,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:50,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:50,721 INFO L124 PetriNetUnfolderBase]: 844/1605 cut-off events. [2024-05-12 12:05:50,721 INFO L125 PetriNetUnfolderBase]: For 5941/5941 co-relation queries the response was YES. [2024-05-12 12:05:50,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 1605 events. 844/1605 cut-off events. For 5941/5941 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9046 event pairs, 390 based on Foata normal form. 1/1535 useless extension candidates. Maximal degree in co-relation 6254. Up to 1334 conditions per place. [2024-05-12 12:05:50,734 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 93 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-05-12 12:05:50,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 1192 flow [2024-05-12 12:05:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-05-12 12:05:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41729323308270677 [2024-05-12 12:05:50,737 INFO L175 Difference]: Start difference. First operand has 80 places, 102 transitions, 878 flow. Second operand 7 states and 111 transitions. [2024-05-12 12:05:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 1192 flow [2024-05-12 12:05:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 1165 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 12:05:50,746 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 935 flow [2024-05-12 12:05:50,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=935, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-05-12 12:05:50,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2024-05-12 12:05:50,747 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 935 flow [2024-05-12 12:05:50,748 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 12:05:50,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:50,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:50,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:05:50,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:50,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 174303392, now seen corresponding path program 1 times [2024-05-12 12:05:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:50,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248231156] [2024-05-12 12:05:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:50,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:05:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248231156] [2024-05-12 12:05:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248231156] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:54,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:54,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:05:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236816492] [2024-05-12 12:05:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:05:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:05:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:05:54,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 935 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 12:05:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:55,585 INFO L124 PetriNetUnfolderBase]: 842/1602 cut-off events. [2024-05-12 12:05:55,585 INFO L125 PetriNetUnfolderBase]: For 6543/6543 co-relation queries the response was YES. [2024-05-12 12:05:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 1602 events. 842/1602 cut-off events. For 6543/6543 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9037 event pairs, 387 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 6385. Up to 1324 conditions per place. [2024-05-12 12:05:55,597 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 102 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-05-12 12:05:55,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 1277 flow [2024-05-12 12:05:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:05:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:05:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 12:05:55,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-05-12 12:05:55,599 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 935 flow. Second operand 7 states and 118 transitions. [2024-05-12 12:05:55,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 1277 flow [2024-05-12 12:05:55,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 1221 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 12:05:55,610 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 966 flow [2024-05-12 12:05:55,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2024-05-12 12:05:55,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-05-12 12:05:55,611 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 966 flow [2024-05-12 12:05:55,611 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 12:05:55,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:55,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:55,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:05:55,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:55,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 240096782, now seen corresponding path program 1 times [2024-05-12 12:05:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:55,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886393953] [2024-05-12 12:05:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:55,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:05:58,820 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 12:05:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:05:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886393953] [2024-05-12 12:05:58,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886393953] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:05:58,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:05:58,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:05:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780523097] [2024-05-12 12:05:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:05:58,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:05:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:05:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:05:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:05:58,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:05:58,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 966 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 12:05:58,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:05:58,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:05:58,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:05:59,467 INFO L124 PetriNetUnfolderBase]: 954/1763 cut-off events. [2024-05-12 12:05:59,467 INFO L125 PetriNetUnfolderBase]: For 7519/7519 co-relation queries the response was YES. [2024-05-12 12:05:59,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 1763 events. 954/1763 cut-off events. For 7519/7519 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9930 event pairs, 185 based on Foata normal form. 3/1698 useless extension candidates. Maximal degree in co-relation 7203. Up to 1109 conditions per place. [2024-05-12 12:05:59,478 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 154 selfloop transitions, 44 changer transitions 0/204 dead transitions. [2024-05-12 12:05:59,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 204 transitions, 2146 flow [2024-05-12 12:05:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:05:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:05:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 12:05:59,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-05-12 12:05:59,479 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 966 flow. Second operand 8 states and 151 transitions. [2024-05-12 12:05:59,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 204 transitions, 2146 flow [2024-05-12 12:05:59,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 204 transitions, 2117 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 12:05:59,491 INFO L231 Difference]: Finished difference. Result has 95 places, 137 transitions, 1342 flow [2024-05-12 12:05:59,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1342, PETRI_PLACES=95, PETRI_TRANSITIONS=137} [2024-05-12 12:05:59,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-05-12 12:05:59,493 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 137 transitions, 1342 flow [2024-05-12 12:05:59,493 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 12:05:59,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:05:59,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:05:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:05:59,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:05:59,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:05:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 902432870, now seen corresponding path program 2 times [2024-05-12 12:05:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:05:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857463437] [2024-05-12 12:05:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:05:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:05:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:03,446 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 12:06:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857463437] [2024-05-12 12:06:03,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857463437] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:03,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:03,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930052118] [2024-05-12 12:06:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:03,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:03,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:03,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:03,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 137 transitions, 1342 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 12:06:03,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:03,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:03,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:04,099 INFO L124 PetriNetUnfolderBase]: 1023/1867 cut-off events. [2024-05-12 12:06:04,099 INFO L125 PetriNetUnfolderBase]: For 9771/9771 co-relation queries the response was YES. [2024-05-12 12:06:04,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8654 conditions, 1867 events. 1023/1867 cut-off events. For 9771/9771 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10519 event pairs, 191 based on Foata normal form. 3/1803 useless extension candidates. Maximal degree in co-relation 8605. Up to 1171 conditions per place. [2024-05-12 12:06:04,111 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 139 selfloop transitions, 66 changer transitions 0/211 dead transitions. [2024-05-12 12:06:04,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 211 transitions, 2404 flow [2024-05-12 12:06:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-05-12 12:06:04,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-05-12 12:06:04,113 INFO L175 Difference]: Start difference. First operand has 95 places, 137 transitions, 1342 flow. Second operand 7 states and 130 transitions. [2024-05-12 12:06:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 211 transitions, 2404 flow [2024-05-12 12:06:04,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 211 transitions, 2324 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:04,144 INFO L231 Difference]: Finished difference. Result has 101 places, 162 transitions, 1758 flow [2024-05-12 12:06:04,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1758, PETRI_PLACES=101, PETRI_TRANSITIONS=162} [2024-05-12 12:06:04,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-05-12 12:06:04,145 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 162 transitions, 1758 flow [2024-05-12 12:06:04,145 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 12:06:04,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:06:04,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:04,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash -367047220, now seen corresponding path program 3 times [2024-05-12 12:06:04,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:04,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039291645] [2024-05-12 12:06:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039291645] [2024-05-12 12:06:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039291645] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173707264] [2024-05-12 12:06:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:08,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:08,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:08,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 162 transitions, 1758 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 12:06:08,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:08,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:08,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:08,760 INFO L124 PetriNetUnfolderBase]: 1039/1896 cut-off events. [2024-05-12 12:06:08,761 INFO L125 PetriNetUnfolderBase]: For 12072/12072 co-relation queries the response was YES. [2024-05-12 12:06:08,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 1896 events. 1039/1896 cut-off events. For 12072/12072 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10671 event pairs, 379 based on Foata normal form. 1/1828 useless extension candidates. Maximal degree in co-relation 9450. Up to 1606 conditions per place. [2024-05-12 12:06:08,772 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 161 selfloop transitions, 30 changer transitions 0/197 dead transitions. [2024-05-12 12:06:08,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 197 transitions, 2425 flow [2024-05-12 12:06:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-05-12 12:06:08,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-05-12 12:06:08,774 INFO L175 Difference]: Start difference. First operand has 101 places, 162 transitions, 1758 flow. Second operand 7 states and 117 transitions. [2024-05-12 12:06:08,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 197 transitions, 2425 flow [2024-05-12 12:06:08,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 197 transitions, 2331 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:08,798 INFO L231 Difference]: Finished difference. Result has 106 places, 177 transitions, 1939 flow [2024-05-12 12:06:08,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1939, PETRI_PLACES=106, PETRI_TRANSITIONS=177} [2024-05-12 12:06:08,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-05-12 12:06:08,799 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 177 transitions, 1939 flow [2024-05-12 12:06:08,799 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 12:06:08,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:08,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:08,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:06:08,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:08,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1108429730, now seen corresponding path program 4 times [2024-05-12 12:06:08,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:08,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933300654] [2024-05-12 12:06:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:12,588 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 12:06:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933300654] [2024-05-12 12:06:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933300654] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:12,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56991807] [2024-05-12 12:06:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:12,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:12,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 177 transitions, 1939 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 12:06:12,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:12,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:13,305 INFO L124 PetriNetUnfolderBase]: 1041/1898 cut-off events. [2024-05-12 12:06:13,305 INFO L125 PetriNetUnfolderBase]: For 12095/12095 co-relation queries the response was YES. [2024-05-12 12:06:13,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9314 conditions, 1898 events. 1041/1898 cut-off events. For 12095/12095 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10715 event pairs, 381 based on Foata normal form. 1/1830 useless extension candidates. Maximal degree in co-relation 9260. Up to 1636 conditions per place. [2024-05-12 12:06:13,316 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 169 selfloop transitions, 25 changer transitions 0/200 dead transitions. [2024-05-12 12:06:13,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 200 transitions, 2480 flow [2024-05-12 12:06:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-05-12 12:06:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323308270676692 [2024-05-12 12:06:13,329 INFO L175 Difference]: Start difference. First operand has 106 places, 177 transitions, 1939 flow. Second operand 7 states and 115 transitions. [2024-05-12 12:06:13,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 200 transitions, 2480 flow [2024-05-12 12:06:13,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 200 transitions, 2400 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:13,355 INFO L231 Difference]: Finished difference. Result has 111 places, 185 transitions, 2030 flow [2024-05-12 12:06:13,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2030, PETRI_PLACES=111, PETRI_TRANSITIONS=185} [2024-05-12 12:06:13,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-05-12 12:06:13,357 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 185 transitions, 2030 flow [2024-05-12 12:06:13,357 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 12:06:13,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:13,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:06:13,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 244807921, now seen corresponding path program 1 times [2024-05-12 12:06:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632695430] [2024-05-12 12:06:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:18,223 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 12:06:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632695430] [2024-05-12 12:06:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632695430] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:18,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:18,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:06:18,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075647272] [2024-05-12 12:06:18,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:18,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:06:18,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:06:18,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:06:18,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:18,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 185 transitions, 2030 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 12:06:18,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:18,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:19,096 INFO L124 PetriNetUnfolderBase]: 1037/1883 cut-off events. [2024-05-12 12:06:19,097 INFO L125 PetriNetUnfolderBase]: For 12656/12656 co-relation queries the response was YES. [2024-05-12 12:06:19,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9364 conditions, 1883 events. 1037/1883 cut-off events. For 12656/12656 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10499 event pairs, 365 based on Foata normal form. 2/1819 useless extension candidates. Maximal degree in co-relation 9307. Up to 1590 conditions per place. [2024-05-12 12:06:19,108 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 183 selfloop transitions, 25 changer transitions 0/214 dead transitions. [2024-05-12 12:06:19,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 2564 flow [2024-05-12 12:06:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 12:06:19,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2024-05-12 12:06:19,110 INFO L175 Difference]: Start difference. First operand has 111 places, 185 transitions, 2030 flow. Second operand 8 states and 135 transitions. [2024-05-12 12:06:19,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 2564 flow [2024-05-12 12:06:19,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 214 transitions, 2523 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 12:06:19,131 INFO L231 Difference]: Finished difference. Result has 116 places, 187 transitions, 2062 flow [2024-05-12 12:06:19,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2062, PETRI_PLACES=116, PETRI_TRANSITIONS=187} [2024-05-12 12:06:19,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-05-12 12:06:19,132 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 187 transitions, 2062 flow [2024-05-12 12:06:19,132 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 12:06:19,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:19,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:19,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:06:19,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:19,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1200214576, now seen corresponding path program 1 times [2024-05-12 12:06:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537646202] [2024-05-12 12:06:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:23,712 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 12:06:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:23,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537646202] [2024-05-12 12:06:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537646202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:23,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:23,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10246754] [2024-05-12 12:06:23,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:23,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:23,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 187 transitions, 2062 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 12:06:23,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:23,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:24,486 INFO L124 PetriNetUnfolderBase]: 1110/1994 cut-off events. [2024-05-12 12:06:24,486 INFO L125 PetriNetUnfolderBase]: For 14354/14354 co-relation queries the response was YES. [2024-05-12 12:06:24,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1994 events. 1110/1994 cut-off events. For 14354/14354 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11217 event pairs, 204 based on Foata normal form. 1/1930 useless extension candidates. Maximal degree in co-relation 10148. Up to 1404 conditions per place. [2024-05-12 12:06:24,522 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 196 selfloop transitions, 77 changer transitions 0/279 dead transitions. [2024-05-12 12:06:24,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 279 transitions, 3482 flow [2024-05-12 12:06:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 12:06:24,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-05-12 12:06:24,524 INFO L175 Difference]: Start difference. First operand has 116 places, 187 transitions, 2062 flow. Second operand 8 states and 147 transitions. [2024-05-12 12:06:24,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 279 transitions, 3482 flow [2024-05-12 12:06:24,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 279 transitions, 3423 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 12:06:24,574 INFO L231 Difference]: Finished difference. Result has 121 places, 235 transitions, 2814 flow [2024-05-12 12:06:24,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2814, PETRI_PLACES=121, PETRI_TRANSITIONS=235} [2024-05-12 12:06:24,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-05-12 12:06:24,589 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 235 transitions, 2814 flow [2024-05-12 12:06:24,589 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 12:06:24,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:24,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:24,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:06:24,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:24,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1203014806, now seen corresponding path program 2 times [2024-05-12 12:06:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712479071] [2024-05-12 12:06:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:24,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:29,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:29,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712479071] [2024-05-12 12:06:29,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712479071] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:29,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:29,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634373344] [2024-05-12 12:06:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:29,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:29,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:29,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 235 transitions, 2814 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 12:06:29,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:29,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:29,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:30,643 INFO L124 PetriNetUnfolderBase]: 1111/2016 cut-off events. [2024-05-12 12:06:30,643 INFO L125 PetriNetUnfolderBase]: For 15940/15940 co-relation queries the response was YES. [2024-05-12 12:06:30,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 2016 events. 1111/2016 cut-off events. For 15940/15940 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11534 event pairs, 167 based on Foata normal form. 1/1945 useless extension candidates. Maximal degree in co-relation 10898. Up to 1567 conditions per place. [2024-05-12 12:06:30,656 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 215 selfloop transitions, 54 changer transitions 0/275 dead transitions. [2024-05-12 12:06:30,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 275 transitions, 3642 flow [2024-05-12 12:06:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:06:30,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:06:30,660 INFO L175 Difference]: Start difference. First operand has 121 places, 235 transitions, 2814 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:06:30,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 275 transitions, 3642 flow [2024-05-12 12:06:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 275 transitions, 3592 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-05-12 12:06:30,695 INFO L231 Difference]: Finished difference. Result has 127 places, 239 transitions, 2939 flow [2024-05-12 12:06:30,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2939, PETRI_PLACES=127, PETRI_TRANSITIONS=239} [2024-05-12 12:06:30,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-05-12 12:06:30,696 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 239 transitions, 2939 flow [2024-05-12 12:06:30,696 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 12:06:30,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:30,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 12:06:30,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:30,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash -193963098, now seen corresponding path program 3 times [2024-05-12 12:06:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144338563] [2024-05-12 12:06:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144338563] [2024-05-12 12:06:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144338563] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667015580] [2024-05-12 12:06:34,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:34,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:34,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:34,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 239 transitions, 2939 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 12:06:34,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:34,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:35,572 INFO L124 PetriNetUnfolderBase]: 1172/2104 cut-off events. [2024-05-12 12:06:35,573 INFO L125 PetriNetUnfolderBase]: For 18878/18878 co-relation queries the response was YES. [2024-05-12 12:06:35,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11887 conditions, 2104 events. 1172/2104 cut-off events. For 18878/18878 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11953 event pairs, 219 based on Foata normal form. 1/2036 useless extension candidates. Maximal degree in co-relation 11823. Up to 1466 conditions per place. [2024-05-12 12:06:35,589 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 238 selfloop transitions, 109 changer transitions 0/353 dead transitions. [2024-05-12 12:06:35,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 353 transitions, 5017 flow [2024-05-12 12:06:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 12:06:35,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-05-12 12:06:35,591 INFO L175 Difference]: Start difference. First operand has 127 places, 239 transitions, 2939 flow. Second operand 8 states and 147 transitions. [2024-05-12 12:06:35,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 353 transitions, 5017 flow [2024-05-12 12:06:35,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 353 transitions, 4844 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 12:06:35,628 INFO L231 Difference]: Finished difference. Result has 133 places, 303 transitions, 4067 flow [2024-05-12 12:06:35,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4067, PETRI_PLACES=133, PETRI_TRANSITIONS=303} [2024-05-12 12:06:35,629 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-05-12 12:06:35,629 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 303 transitions, 4067 flow [2024-05-12 12:06:35,629 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 12:06:35,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:35,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 12:06:35,630 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:35,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1146932618, now seen corresponding path program 1 times [2024-05-12 12:06:35,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:35,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371272601] [2024-05-12 12:06:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:35,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:39,647 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 12:06:39,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:39,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371272601] [2024-05-12 12:06:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371272601] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:39,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:06:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140526107] [2024-05-12 12:06:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:06:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:06:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:06:39,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:39,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 303 transitions, 4067 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 12:06:39,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:39,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:40,669 INFO L124 PetriNetUnfolderBase]: 1301/2351 cut-off events. [2024-05-12 12:06:40,669 INFO L125 PetriNetUnfolderBase]: For 22809/22809 co-relation queries the response was YES. [2024-05-12 12:06:40,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13805 conditions, 2351 events. 1301/2351 cut-off events. For 22809/22809 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13769 event pairs, 212 based on Foata normal form. 3/2269 useless extension candidates. Maximal degree in co-relation 13736. Up to 953 conditions per place. [2024-05-12 12:06:40,686 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 275 selfloop transitions, 107 changer transitions 0/388 dead transitions. [2024-05-12 12:06:40,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 388 transitions, 5630 flow [2024-05-12 12:06:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:06:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:06:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-05-12 12:06:40,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-05-12 12:06:40,688 INFO L175 Difference]: Start difference. First operand has 133 places, 303 transitions, 4067 flow. Second operand 9 states and 178 transitions. [2024-05-12 12:06:40,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 388 transitions, 5630 flow [2024-05-12 12:06:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 388 transitions, 5494 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-05-12 12:06:40,743 INFO L231 Difference]: Finished difference. Result has 144 places, 322 transitions, 4528 flow [2024-05-12 12:06:40,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3965, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4528, PETRI_PLACES=144, PETRI_TRANSITIONS=322} [2024-05-12 12:06:40,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-05-12 12:06:40,744 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 322 transitions, 4528 flow [2024-05-12 12:06:40,744 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 12:06:40,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:40,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 12:06:40,745 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:40,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash 373320543, now seen corresponding path program 1 times [2024-05-12 12:06:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899219307] [2024-05-12 12:06:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:06:45,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:45,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899219307] [2024-05-12 12:06:45,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899219307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:45,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:45,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689972909] [2024-05-12 12:06:45,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:45,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:45,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:45,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 322 transitions, 4528 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 12:06:45,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:45,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:45,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:45,881 INFO L124 PetriNetUnfolderBase]: 1347/2429 cut-off events. [2024-05-12 12:06:45,881 INFO L125 PetriNetUnfolderBase]: For 28257/28257 co-relation queries the response was YES. [2024-05-12 12:06:45,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15463 conditions, 2429 events. 1347/2429 cut-off events. For 28257/28257 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14380 event pairs, 237 based on Foata normal form. 1/2345 useless extension candidates. Maximal degree in co-relation 15388. Up to 1535 conditions per place. [2024-05-12 12:06:45,897 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 206 selfloop transitions, 180 changer transitions 0/392 dead transitions. [2024-05-12 12:06:45,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 392 transitions, 6092 flow [2024-05-12 12:06:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-05-12 12:06:45,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-05-12 12:06:45,899 INFO L175 Difference]: Start difference. First operand has 144 places, 322 transitions, 4528 flow. Second operand 8 states and 148 transitions. [2024-05-12 12:06:45,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 392 transitions, 6092 flow [2024-05-12 12:06:45,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 392 transitions, 6031 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-05-12 12:06:45,999 INFO L231 Difference]: Finished difference. Result has 152 places, 350 transitions, 5385 flow [2024-05-12 12:06:46,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5385, PETRI_PLACES=152, PETRI_TRANSITIONS=350} [2024-05-12 12:06:46,000 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-05-12 12:06:46,000 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 350 transitions, 5385 flow [2024-05-12 12:06:46,000 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 12:06:46,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:46,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:46,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:06:46,001 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:46,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1146938415, now seen corresponding path program 2 times [2024-05-12 12:06:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875256461] [2024-05-12 12:06:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:50,419 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 12:06:50,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875256461] [2024-05-12 12:06:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875256461] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:50,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22176291] [2024-05-12 12:06:50,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:50,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:50,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:50,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:50,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:50,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 350 transitions, 5385 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 12:06:50,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:50,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:51,384 INFO L124 PetriNetUnfolderBase]: 1413/2522 cut-off events. [2024-05-12 12:06:51,384 INFO L125 PetriNetUnfolderBase]: For 33496/33496 co-relation queries the response was YES. [2024-05-12 12:06:51,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17290 conditions, 2522 events. 1413/2522 cut-off events. For 33496/33496 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14828 event pairs, 255 based on Foata normal form. 2/2442 useless extension candidates. Maximal degree in co-relation 17211. Up to 1572 conditions per place. [2024-05-12 12:06:51,402 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 235 selfloop transitions, 189 changer transitions 0/430 dead transitions. [2024-05-12 12:06:51,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 430 transitions, 7350 flow [2024-05-12 12:06:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:06:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:06:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 12:06:51,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-05-12 12:06:51,404 INFO L175 Difference]: Start difference. First operand has 152 places, 350 transitions, 5385 flow. Second operand 8 states and 151 transitions. [2024-05-12 12:06:51,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 430 transitions, 7350 flow [2024-05-12 12:06:51,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 430 transitions, 7020 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 12:06:51,485 INFO L231 Difference]: Finished difference. Result has 158 places, 384 transitions, 6233 flow [2024-05-12 12:06:51,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6233, PETRI_PLACES=158, PETRI_TRANSITIONS=384} [2024-05-12 12:06:51,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-05-12 12:06:51,486 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 384 transitions, 6233 flow [2024-05-12 12:06:51,486 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 12:06:51,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:51,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 12:06:51,486 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 476505470, now seen corresponding path program 4 times [2024-05-12 12:06:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465176569] [2024-05-12 12:06:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:06:55,806 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 12:06:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:06:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465176569] [2024-05-12 12:06:55,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465176569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:06:55,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:06:55,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:06:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639873560] [2024-05-12 12:06:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:06:55,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:06:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:06:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:06:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:06:55,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:06:55,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 384 transitions, 6233 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 12:06:55,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:06:55,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:06:55,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:06:56,686 INFO L124 PetriNetUnfolderBase]: 1433/2553 cut-off events. [2024-05-12 12:06:56,687 INFO L125 PetriNetUnfolderBase]: For 36224/36224 co-relation queries the response was YES. [2024-05-12 12:06:56,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18023 conditions, 2553 events. 1433/2553 cut-off events. For 36224/36224 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15016 event pairs, 250 based on Foata normal form. 1/2472 useless extension candidates. Maximal degree in co-relation 17941. Up to 1678 conditions per place. [2024-05-12 12:06:56,708 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 210 selfloop transitions, 218 changer transitions 0/434 dead transitions. [2024-05-12 12:06:56,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 434 transitions, 7704 flow [2024-05-12 12:06:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:06:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:06:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 12:06:56,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-05-12 12:06:56,714 INFO L175 Difference]: Start difference. First operand has 158 places, 384 transitions, 6233 flow. Second operand 7 states and 129 transitions. [2024-05-12 12:06:56,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 434 transitions, 7704 flow [2024-05-12 12:06:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 434 transitions, 7441 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 12:06:56,813 INFO L231 Difference]: Finished difference. Result has 163 places, 405 transitions, 7017 flow [2024-05-12 12:06:56,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5997, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7017, PETRI_PLACES=163, PETRI_TRANSITIONS=405} [2024-05-12 12:06:56,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-05-12 12:06:56,814 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 405 transitions, 7017 flow [2024-05-12 12:06:56,814 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 12:06:56,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:06:56,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:06:56,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 12:06:56,814 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:06:56,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:06:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash 476595680, now seen corresponding path program 5 times [2024-05-12 12:06:56,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:06:56,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384067317] [2024-05-12 12:06:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:06:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:06:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:00,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:00,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384067317] [2024-05-12 12:07:00,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384067317] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:00,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:00,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:07:00,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590242828] [2024-05-12 12:07:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:00,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:07:00,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:00,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:07:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:07:00,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:00,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 405 transitions, 7017 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 12:07:00,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:00,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:00,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:01,296 INFO L124 PetriNetUnfolderBase]: 1464/2589 cut-off events. [2024-05-12 12:07:01,296 INFO L125 PetriNetUnfolderBase]: For 41387/41387 co-relation queries the response was YES. [2024-05-12 12:07:01,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19298 conditions, 2589 events. 1464/2589 cut-off events. For 41387/41387 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15133 event pairs, 395 based on Foata normal form. 2/2513 useless extension candidates. Maximal degree in co-relation 19213. Up to 1999 conditions per place. [2024-05-12 12:07:01,315 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 309 selfloop transitions, 146 changer transitions 0/461 dead transitions. [2024-05-12 12:07:01,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 461 transitions, 8825 flow [2024-05-12 12:07:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-05-12 12:07:01,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-05-12 12:07:01,318 INFO L175 Difference]: Start difference. First operand has 163 places, 405 transitions, 7017 flow. Second operand 8 states and 133 transitions. [2024-05-12 12:07:01,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 461 transitions, 8825 flow [2024-05-12 12:07:01,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 461 transitions, 8725 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:01,414 INFO L231 Difference]: Finished difference. Result has 169 places, 434 transitions, 8071 flow [2024-05-12 12:07:01,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6921, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8071, PETRI_PLACES=169, PETRI_TRANSITIONS=434} [2024-05-12 12:07:01,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-05-12 12:07:01,414 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 434 transitions, 8071 flow [2024-05-12 12:07:01,415 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 12:07:01,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:01,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 12:07:01,415 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2089356167, now seen corresponding path program 3 times [2024-05-12 12:07:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853634243] [2024-05-12 12:07:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853634243] [2024-05-12 12:07:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853634243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:04,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:07:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459668870] [2024-05-12 12:07:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:04,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:07:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:07:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:07:04,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:04,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 434 transitions, 8071 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 12:07:04,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:04,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:04,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:05,738 INFO L124 PetriNetUnfolderBase]: 1480/2642 cut-off events. [2024-05-12 12:07:05,738 INFO L125 PetriNetUnfolderBase]: For 42965/42965 co-relation queries the response was YES. [2024-05-12 12:07:05,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20207 conditions, 2642 events. 1480/2642 cut-off events. For 42965/42965 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15765 event pairs, 281 based on Foata normal form. 2/2558 useless extension candidates. Maximal degree in co-relation 20120. Up to 1619 conditions per place. [2024-05-12 12:07:05,761 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 218 selfloop transitions, 266 changer transitions 0/490 dead transitions. [2024-05-12 12:07:05,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 490 transitions, 9851 flow [2024-05-12 12:07:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:07:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:07:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-05-12 12:07:05,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-05-12 12:07:05,763 INFO L175 Difference]: Start difference. First operand has 169 places, 434 transitions, 8071 flow. Second operand 7 states and 132 transitions. [2024-05-12 12:07:05,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 490 transitions, 9851 flow [2024-05-12 12:07:05,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 490 transitions, 9509 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:05,887 INFO L231 Difference]: Finished difference. Result has 174 places, 454 transitions, 9017 flow [2024-05-12 12:07:05,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7764, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9017, PETRI_PLACES=174, PETRI_TRANSITIONS=454} [2024-05-12 12:07:05,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-05-12 12:07:05,888 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 454 transitions, 9017 flow [2024-05-12 12:07:05,888 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 12:07:05,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:05,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:05,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 12:07:05,888 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:05,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2089350370, now seen corresponding path program 2 times [2024-05-12 12:07:05,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:05,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241504022] [2024-05-12 12:07:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:05,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:10,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:10,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241504022] [2024-05-12 12:07:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241504022] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:10,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:10,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:10,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310473778] [2024-05-12 12:07:10,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:10,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:10,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:10,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 454 transitions, 9017 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 12:07:10,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:10,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:10,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:11,269 INFO L124 PetriNetUnfolderBase]: 1600/2865 cut-off events. [2024-05-12 12:07:11,270 INFO L125 PetriNetUnfolderBase]: For 48428/48428 co-relation queries the response was YES. [2024-05-12 12:07:11,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22514 conditions, 2865 events. 1600/2865 cut-off events. For 48428/48428 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17338 event pairs, 213 based on Foata normal form. 3/2767 useless extension candidates. Maximal degree in co-relation 22424. Up to 1074 conditions per place. [2024-05-12 12:07:11,294 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 195 changer transitions 0/527 dead transitions. [2024-05-12 12:07:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 527 transitions, 10821 flow [2024-05-12 12:07:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:07:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:07:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-05-12 12:07:11,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-05-12 12:07:11,295 INFO L175 Difference]: Start difference. First operand has 174 places, 454 transitions, 9017 flow. Second operand 9 states and 170 transitions. [2024-05-12 12:07:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 527 transitions, 10821 flow [2024-05-12 12:07:11,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 527 transitions, 10479 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-05-12 12:07:11,448 INFO L231 Difference]: Finished difference. Result has 183 places, 471 transitions, 9598 flow [2024-05-12 12:07:11,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8679, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9598, PETRI_PLACES=183, PETRI_TRANSITIONS=471} [2024-05-12 12:07:11,449 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-05-12 12:07:11,449 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 471 transitions, 9598 flow [2024-05-12 12:07:11,449 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 12:07:11,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:11,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 12:07:11,450 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:11,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2089350587, now seen corresponding path program 4 times [2024-05-12 12:07:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:11,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038467617] [2024-05-12 12:07:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:15,405 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 12:07:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038467617] [2024-05-12 12:07:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038467617] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:07:15,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033152453] [2024-05-12 12:07:15,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:15,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:07:15,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:07:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:07:15,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:15,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 471 transitions, 9598 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 12:07:15,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:16,424 INFO L124 PetriNetUnfolderBase]: 1624/2905 cut-off events. [2024-05-12 12:07:16,425 INFO L125 PetriNetUnfolderBase]: For 58206/58206 co-relation queries the response was YES. [2024-05-12 12:07:16,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24219 conditions, 2905 events. 1624/2905 cut-off events. For 58206/58206 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17728 event pairs, 260 based on Foata normal form. 1/2804 useless extension candidates. Maximal degree in co-relation 24125. Up to 1824 conditions per place. [2024-05-12 12:07:16,451 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 209 selfloop transitions, 295 changer transitions 0/510 dead transitions. [2024-05-12 12:07:16,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 510 transitions, 11131 flow [2024-05-12 12:07:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:07:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:07:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-05-12 12:07:16,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:07:16,454 INFO L175 Difference]: Start difference. First operand has 183 places, 471 transitions, 9598 flow. Second operand 7 states and 126 transitions. [2024-05-12 12:07:16,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 510 transitions, 11131 flow [2024-05-12 12:07:16,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 510 transitions, 10960 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:16,623 INFO L231 Difference]: Finished difference. Result has 186 places, 485 transitions, 10360 flow [2024-05-12 12:07:16,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9427, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10360, PETRI_PLACES=186, PETRI_TRANSITIONS=485} [2024-05-12 12:07:16,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-05-12 12:07:16,628 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 485 transitions, 10360 flow [2024-05-12 12:07:16,628 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 12:07:16,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:16,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:16,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 12:07:16,629 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:16,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1014196416, now seen corresponding path program 3 times [2024-05-12 12:07:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870784058] [2024-05-12 12:07:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:20,768 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 12:07:20,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:20,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870784058] [2024-05-12 12:07:20,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870784058] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:20,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:20,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450505820] [2024-05-12 12:07:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:20,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:20,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:20,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:20,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 485 transitions, 10360 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 12:07:20,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:20,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:20,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:21,933 INFO L124 PetriNetUnfolderBase]: 1652/2971 cut-off events. [2024-05-12 12:07:21,934 INFO L125 PetriNetUnfolderBase]: For 62780/62780 co-relation queries the response was YES. [2024-05-12 12:07:21,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24657 conditions, 2971 events. 1652/2971 cut-off events. For 62780/62780 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18203 event pairs, 407 based on Foata normal form. 1/2864 useless extension candidates. Maximal degree in co-relation 24562. Up to 2434 conditions per place. [2024-05-12 12:07:21,962 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 475 selfloop transitions, 49 changer transitions 0/530 dead transitions. [2024-05-12 12:07:21,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 530 transitions, 11851 flow [2024-05-12 12:07:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:07:21,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:07:21,976 INFO L175 Difference]: Start difference. First operand has 186 places, 485 transitions, 10360 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:07:21,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 530 transitions, 11851 flow [2024-05-12 12:07:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 530 transitions, 11424 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:22,157 INFO L231 Difference]: Finished difference. Result has 190 places, 493 transitions, 10191 flow [2024-05-12 12:07:22,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10191, PETRI_PLACES=190, PETRI_TRANSITIONS=493} [2024-05-12 12:07:22,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-05-12 12:07:22,160 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 493 transitions, 10191 flow [2024-05-12 12:07:22,161 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 12:07:22,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:22,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:22,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 12:07:22,161 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:22,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1880734, now seen corresponding path program 4 times [2024-05-12 12:07:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:22,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523853760] [2024-05-12 12:07:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:26,104 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 12:07:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523853760] [2024-05-12 12:07:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523853760] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133684864] [2024-05-12 12:07:26,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:26,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:26,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 493 transitions, 10191 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 12:07:26,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:26,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:26,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:27,301 INFO L124 PetriNetUnfolderBase]: 1682/3012 cut-off events. [2024-05-12 12:07:27,302 INFO L125 PetriNetUnfolderBase]: For 64053/64053 co-relation queries the response was YES. [2024-05-12 12:07:27,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24657 conditions, 3012 events. 1682/3012 cut-off events. For 64053/64053 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18462 event pairs, 414 based on Foata normal form. 1/2907 useless extension candidates. Maximal degree in co-relation 24561. Up to 2585 conditions per place. [2024-05-12 12:07:27,329 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 489 selfloop transitions, 32 changer transitions 0/527 dead transitions. [2024-05-12 12:07:27,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 527 transitions, 11469 flow [2024-05-12 12:07:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 12:07:27,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:07:27,331 INFO L175 Difference]: Start difference. First operand has 190 places, 493 transitions, 10191 flow. Second operand 8 states and 136 transitions. [2024-05-12 12:07:27,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 527 transitions, 11469 flow [2024-05-12 12:07:27,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 527 transitions, 11393 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-05-12 12:07:27,528 INFO L231 Difference]: Finished difference. Result has 197 places, 502 transitions, 10328 flow [2024-05-12 12:07:27,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10118, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10328, PETRI_PLACES=197, PETRI_TRANSITIONS=502} [2024-05-12 12:07:27,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-05-12 12:07:27,529 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 502 transitions, 10328 flow [2024-05-12 12:07:27,529 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 12:07:27,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:27,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 12:07:27,530 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:27,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash 398416193, now seen corresponding path program 5 times [2024-05-12 12:07:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:27,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201734709] [2024-05-12 12:07:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:31,799 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 12:07:31,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:31,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201734709] [2024-05-12 12:07:31,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201734709] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:31,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:31,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:07:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354546736] [2024-05-12 12:07:31,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:31,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:07:31,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:07:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:07:31,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:31,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 502 transitions, 10328 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 12:07:31,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:31,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:31,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:32,764 INFO L124 PetriNetUnfolderBase]: 1682/3019 cut-off events. [2024-05-12 12:07:32,765 INFO L125 PetriNetUnfolderBase]: For 65001/65001 co-relation queries the response was YES. [2024-05-12 12:07:32,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24811 conditions, 3019 events. 1682/3019 cut-off events. For 65001/65001 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18632 event pairs, 422 based on Foata normal form. 1/2912 useless extension candidates. Maximal degree in co-relation 24711. Up to 2604 conditions per place. [2024-05-12 12:07:32,793 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 479 selfloop transitions, 41 changer transitions 0/526 dead transitions. [2024-05-12 12:07:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 526 transitions, 11620 flow [2024-05-12 12:07:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:07:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:07:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-05-12 12:07:32,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43609022556390975 [2024-05-12 12:07:32,795 INFO L175 Difference]: Start difference. First operand has 197 places, 502 transitions, 10328 flow. Second operand 7 states and 116 transitions. [2024-05-12 12:07:32,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 526 transitions, 11620 flow [2024-05-12 12:07:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 526 transitions, 11542 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-05-12 12:07:32,981 INFO L231 Difference]: Finished difference. Result has 201 places, 508 transitions, 10494 flow [2024-05-12 12:07:32,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10252, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10494, PETRI_PLACES=201, PETRI_TRANSITIONS=508} [2024-05-12 12:07:32,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-05-12 12:07:32,982 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 508 transitions, 10494 flow [2024-05-12 12:07:32,982 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 12:07:32,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:32,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:32,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 12:07:32,982 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:32,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1005951036, now seen corresponding path program 5 times [2024-05-12 12:07:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476075492] [2024-05-12 12:07:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:36,967 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 12:07:36,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:36,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476075492] [2024-05-12 12:07:36,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476075492] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:36,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591040362] [2024-05-12 12:07:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:37,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:37,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 508 transitions, 10494 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 12:07:37,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:37,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:37,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:38,104 INFO L124 PetriNetUnfolderBase]: 1688/3025 cut-off events. [2024-05-12 12:07:38,104 INFO L125 PetriNetUnfolderBase]: For 65149/65149 co-relation queries the response was YES. [2024-05-12 12:07:38,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24814 conditions, 3025 events. 1688/3025 cut-off events. For 65149/65149 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18574 event pairs, 413 based on Foata normal form. 1/2919 useless extension candidates. Maximal degree in co-relation 24713. Up to 2571 conditions per place. [2024-05-12 12:07:38,134 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 495 selfloop transitions, 38 changer transitions 0/539 dead transitions. [2024-05-12 12:07:38,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 539 transitions, 11798 flow [2024-05-12 12:07:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:07:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:07:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 12:07:38,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:07:38,135 INFO L175 Difference]: Start difference. First operand has 201 places, 508 transitions, 10494 flow. Second operand 8 states and 136 transitions. [2024-05-12 12:07:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 539 transitions, 11798 flow [2024-05-12 12:07:38,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 539 transitions, 11642 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-05-12 12:07:38,322 INFO L231 Difference]: Finished difference. Result has 205 places, 512 transitions, 10523 flow [2024-05-12 12:07:38,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10360, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10523, PETRI_PLACES=205, PETRI_TRANSITIONS=512} [2024-05-12 12:07:38,323 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-05-12 12:07:38,323 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 512 transitions, 10523 flow [2024-05-12 12:07:38,323 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 12:07:38,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:38,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 12:07:38,324 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:38,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1482968151, now seen corresponding path program 1 times [2024-05-12 12:07:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:38,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410646652] [2024-05-12 12:07:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:43,627 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 12:07:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410646652] [2024-05-12 12:07:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410646652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:43,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:43,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:43,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084768137] [2024-05-12 12:07:43,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:43,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:43,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:43,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:43,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 512 transitions, 10523 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 12:07:43,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:43,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:44,777 INFO L124 PetriNetUnfolderBase]: 1774/3185 cut-off events. [2024-05-12 12:07:44,777 INFO L125 PetriNetUnfolderBase]: For 67172/67172 co-relation queries the response was YES. [2024-05-12 12:07:44,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25623 conditions, 3185 events. 1774/3185 cut-off events. For 67172/67172 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19988 event pairs, 246 based on Foata normal form. 2/3080 useless extension candidates. Maximal degree in co-relation 25520. Up to 2334 conditions per place. [2024-05-12 12:07:44,808 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 461 selfloop transitions, 104 changer transitions 0/571 dead transitions. [2024-05-12 12:07:44,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 571 transitions, 12275 flow [2024-05-12 12:07:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:07:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:07:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:07:44,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:07:44,809 INFO L175 Difference]: Start difference. First operand has 205 places, 512 transitions, 10523 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:07:44,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 571 transitions, 12275 flow [2024-05-12 12:07:44,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 571 transitions, 12199 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:45,000 INFO L231 Difference]: Finished difference. Result has 212 places, 527 transitions, 11016 flow [2024-05-12 12:07:45,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10447, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11016, PETRI_PLACES=212, PETRI_TRANSITIONS=527} [2024-05-12 12:07:45,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-05-12 12:07:45,001 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 527 transitions, 11016 flow [2024-05-12 12:07:45,001 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 12:07:45,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:45,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:45,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 12:07:45,002 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:45,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1397109621, now seen corresponding path program 2 times [2024-05-12 12:07:45,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:45,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306824526] [2024-05-12 12:07:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:45,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:07:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:07:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:07:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306824526] [2024-05-12 12:07:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306824526] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:07:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:07:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:07:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884916444] [2024-05-12 12:07:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:07:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:07:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:07:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:07:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:07:50,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:07:50,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 527 transitions, 11016 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 12:07:50,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:07:50,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:07:50,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:07:51,846 INFO L124 PetriNetUnfolderBase]: 1793/3239 cut-off events. [2024-05-12 12:07:51,846 INFO L125 PetriNetUnfolderBase]: For 71006/71006 co-relation queries the response was YES. [2024-05-12 12:07:51,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26457 conditions, 3239 events. 1793/3239 cut-off events. For 71006/71006 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20566 event pairs, 266 based on Foata normal form. 2/3127 useless extension candidates. Maximal degree in co-relation 26350. Up to 2489 conditions per place. [2024-05-12 12:07:51,890 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 461 selfloop transitions, 104 changer transitions 0/571 dead transitions. [2024-05-12 12:07:51,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 571 transitions, 12508 flow [2024-05-12 12:07:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:07:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:07:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 12:07:51,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 12:07:51,892 INFO L175 Difference]: Start difference. First operand has 212 places, 527 transitions, 11016 flow. Second operand 9 states and 157 transitions. [2024-05-12 12:07:51,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 571 transitions, 12508 flow [2024-05-12 12:07:52,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 571 transitions, 12405 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-05-12 12:07:52,206 INFO L231 Difference]: Finished difference. Result has 217 places, 529 transitions, 11168 flow [2024-05-12 12:07:52,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10921, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11168, PETRI_PLACES=217, PETRI_TRANSITIONS=529} [2024-05-12 12:07:52,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-05-12 12:07:52,207 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 529 transitions, 11168 flow [2024-05-12 12:07:52,207 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 12:07:52,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:07:52,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:07:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 12:07:52,208 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:07:52,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:07:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1361240327, now seen corresponding path program 1 times [2024-05-12 12:07:52,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:07:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141853809] [2024-05-12 12:07:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:07:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:07:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:01,504 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 12:08:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141853809] [2024-05-12 12:08:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141853809] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:01,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:01,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:08:01,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352347917] [2024-05-12 12:08:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:08:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:08:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:08:01,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:01,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 529 transitions, 11168 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 12:08:01,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:01,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:01,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:02,979 INFO L124 PetriNetUnfolderBase]: 1791/3206 cut-off events. [2024-05-12 12:08:02,979 INFO L125 PetriNetUnfolderBase]: For 69868/69868 co-relation queries the response was YES. [2024-05-12 12:08:02,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26529 conditions, 3206 events. 1791/3206 cut-off events. For 69868/69868 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20058 event pairs, 285 based on Foata normal form. 1/3098 useless extension candidates. Maximal degree in co-relation 26420. Up to 2107 conditions per place. [2024-05-12 12:08:03,009 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 297 selfloop transitions, 261 changer transitions 0/564 dead transitions. [2024-05-12 12:08:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 564 transitions, 12619 flow [2024-05-12 12:08:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-05-12 12:08:03,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-05-12 12:08:03,011 INFO L175 Difference]: Start difference. First operand has 217 places, 529 transitions, 11168 flow. Second operand 9 states and 164 transitions. [2024-05-12 12:08:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 564 transitions, 12619 flow [2024-05-12 12:08:03,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 564 transitions, 12372 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 12:08:03,312 INFO L231 Difference]: Finished difference. Result has 220 places, 529 transitions, 11462 flow [2024-05-12 12:08:03,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10921, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11462, PETRI_PLACES=220, PETRI_TRANSITIONS=529} [2024-05-12 12:08:03,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-05-12 12:08:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 529 transitions, 11462 flow [2024-05-12 12:08:03,313 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 12:08:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 12:08:03,314 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1817453425, now seen corresponding path program 3 times [2024-05-12 12:08:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937619720] [2024-05-12 12:08:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:08,920 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 12:08:08,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937619720] [2024-05-12 12:08:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937619720] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:08,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:08,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:08:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715085711] [2024-05-12 12:08:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:08,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:08:08,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:08:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:08:09,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:09,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 529 transitions, 11462 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 12:08:09,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:09,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:09,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:10,129 INFO L124 PetriNetUnfolderBase]: 1801/3247 cut-off events. [2024-05-12 12:08:10,130 INFO L125 PetriNetUnfolderBase]: For 73591/73591 co-relation queries the response was YES. [2024-05-12 12:08:10,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26938 conditions, 3247 events. 1801/3247 cut-off events. For 73591/73591 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20609 event pairs, 259 based on Foata normal form. 2/3137 useless extension candidates. Maximal degree in co-relation 26828. Up to 2600 conditions per place. [2024-05-12 12:08:10,166 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 489 selfloop transitions, 76 changer transitions 0/571 dead transitions. [2024-05-12 12:08:10,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 571 transitions, 12934 flow [2024-05-12 12:08:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 12:08:10,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 12:08:10,168 INFO L175 Difference]: Start difference. First operand has 220 places, 529 transitions, 11462 flow. Second operand 9 states and 156 transitions. [2024-05-12 12:08:10,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 571 transitions, 12934 flow [2024-05-12 12:08:10,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 571 transitions, 12370 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-05-12 12:08:10,404 INFO L231 Difference]: Finished difference. Result has 222 places, 531 transitions, 11094 flow [2024-05-12 12:08:10,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10906, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11094, PETRI_PLACES=222, PETRI_TRANSITIONS=531} [2024-05-12 12:08:10,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-05-12 12:08:10,405 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 531 transitions, 11094 flow [2024-05-12 12:08:10,405 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 12:08:10,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:10,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:10,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 12:08:10,405 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:10,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 703004597, now seen corresponding path program 4 times [2024-05-12 12:08:10,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:10,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329554371] [2024-05-12 12:08:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329554371] [2024-05-12 12:08:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329554371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:15,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:15,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:08:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18957765] [2024-05-12 12:08:15,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:15,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:08:15,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:08:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:08:15,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:08:15,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 531 transitions, 11094 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:15,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:15,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:08:15,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:16,508 INFO L124 PetriNetUnfolderBase]: 1781/3279 cut-off events. [2024-05-12 12:08:16,508 INFO L125 PetriNetUnfolderBase]: For 74004/74116 co-relation queries the response was YES. [2024-05-12 12:08:16,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26010 conditions, 3279 events. 1781/3279 cut-off events. For 74004/74116 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 21471 event pairs, 217 based on Foata normal form. 101/3263 useless extension candidates. Maximal degree in co-relation 25899. Up to 1675 conditions per place. [2024-05-12 12:08:16,539 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 253 selfloop transitions, 246 changer transitions 0/577 dead transitions. [2024-05-12 12:08:16,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 577 transitions, 12554 flow [2024-05-12 12:08:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-05-12 12:08:16,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-05-12 12:08:16,541 INFO L175 Difference]: Start difference. First operand has 222 places, 531 transitions, 11094 flow. Second operand 8 states and 148 transitions. [2024-05-12 12:08:16,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 577 transitions, 12554 flow [2024-05-12 12:08:16,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 577 transitions, 12442 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 12:08:16,783 INFO L231 Difference]: Finished difference. Result has 227 places, 546 transitions, 11720 flow [2024-05-12 12:08:16,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10987, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11720, PETRI_PLACES=227, PETRI_TRANSITIONS=546} [2024-05-12 12:08:16,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-05-12 12:08:16,784 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 546 transitions, 11720 flow [2024-05-12 12:08:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:16,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:16,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 12:08:16,785 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:16,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1599518767, now seen corresponding path program 5 times [2024-05-12 12:08:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181942970] [2024-05-12 12:08:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181942970] [2024-05-12 12:08:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181942970] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:22,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:08:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439753880] [2024-05-12 12:08:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:08:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:08:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:08:22,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:08:22,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 546 transitions, 11720 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:22,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:22,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:08:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:23,469 INFO L124 PetriNetUnfolderBase]: 1901/3509 cut-off events. [2024-05-12 12:08:23,470 INFO L125 PetriNetUnfolderBase]: For 86683/86797 co-relation queries the response was YES. [2024-05-12 12:08:23,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28365 conditions, 3509 events. 1901/3509 cut-off events. For 86683/86797 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23546 event pairs, 318 based on Foata normal form. 101/3478 useless extension candidates. Maximal degree in co-relation 28251. Up to 1922 conditions per place. [2024-05-12 12:08:23,507 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 257 selfloop transitions, 256 changer transitions 0/591 dead transitions. [2024-05-12 12:08:23,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 591 transitions, 13321 flow [2024-05-12 12:08:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-05-12 12:08:23,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:08:23,509 INFO L175 Difference]: Start difference. First operand has 227 places, 546 transitions, 11720 flow. Second operand 8 states and 152 transitions. [2024-05-12 12:08:23,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 591 transitions, 13321 flow [2024-05-12 12:08:23,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 591 transitions, 12948 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:23,800 INFO L231 Difference]: Finished difference. Result has 232 places, 561 transitions, 12177 flow [2024-05-12 12:08:23,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11431, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12177, PETRI_PLACES=232, PETRI_TRANSITIONS=561} [2024-05-12 12:08:23,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-05-12 12:08:23,801 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 561 transitions, 12177 flow [2024-05-12 12:08:23,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:23,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:23,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:23,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 12:08:23,802 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:23,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1563449647, now seen corresponding path program 6 times [2024-05-12 12:08:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221851816] [2024-05-12 12:08:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:29,090 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 12:08:29,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:29,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221851816] [2024-05-12 12:08:29,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221851816] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:29,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:29,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:08:29,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647311968] [2024-05-12 12:08:29,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:29,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:08:29,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:08:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:08:29,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 12:08:29,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 561 transitions, 12177 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:29,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:29,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 12:08:29,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:30,449 INFO L124 PetriNetUnfolderBase]: 1933/3565 cut-off events. [2024-05-12 12:08:30,449 INFO L125 PetriNetUnfolderBase]: For 84928/85043 co-relation queries the response was YES. [2024-05-12 12:08:30,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29104 conditions, 3565 events. 1933/3565 cut-off events. For 84928/85043 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23895 event pairs, 343 based on Foata normal form. 103/3536 useless extension candidates. Maximal degree in co-relation 28988. Up to 2224 conditions per place. [2024-05-12 12:08:30,491 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 264 selfloop transitions, 253 changer transitions 0/595 dead transitions. [2024-05-12 12:08:30,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 595 transitions, 13572 flow [2024-05-12 12:08:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 12:08:30,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-05-12 12:08:30,492 INFO L175 Difference]: Start difference. First operand has 232 places, 561 transitions, 12177 flow. Second operand 8 states and 151 transitions. [2024-05-12 12:08:30,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 595 transitions, 13572 flow [2024-05-12 12:08:30,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 595 transitions, 13326 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:30,792 INFO L231 Difference]: Finished difference. Result has 236 places, 565 transitions, 12521 flow [2024-05-12 12:08:30,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11931, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12521, PETRI_PLACES=236, PETRI_TRANSITIONS=565} [2024-05-12 12:08:30,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-05-12 12:08:30,793 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 565 transitions, 12521 flow [2024-05-12 12:08:30,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:08:30,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:30,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 12:08:30,794 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:30,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1162854891, now seen corresponding path program 2 times [2024-05-12 12:08:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520828224] [2024-05-12 12:08:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:35,515 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 12:08:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520828224] [2024-05-12 12:08:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520828224] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:35,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:08:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285718629] [2024-05-12 12:08:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:08:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:08:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:08:35,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:35,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 565 transitions, 12521 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:08:35,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:35,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:36,976 INFO L124 PetriNetUnfolderBase]: 2110/3774 cut-off events. [2024-05-12 12:08:36,977 INFO L125 PetriNetUnfolderBase]: For 88574/88574 co-relation queries the response was YES. [2024-05-12 12:08:37,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31287 conditions, 3774 events. 2110/3774 cut-off events. For 88574/88574 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24659 event pairs, 434 based on Foata normal form. 1/3668 useless extension candidates. Maximal degree in co-relation 31169. Up to 2969 conditions per place. [2024-05-12 12:08:37,020 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 416 selfloop transitions, 183 changer transitions 0/605 dead transitions. [2024-05-12 12:08:37,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 605 transitions, 14192 flow [2024-05-12 12:08:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:08:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:08:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 12:08:37,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-05-12 12:08:37,025 INFO L175 Difference]: Start difference. First operand has 236 places, 565 transitions, 12521 flow. Second operand 8 states and 147 transitions. [2024-05-12 12:08:37,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 605 transitions, 14192 flow [2024-05-12 12:08:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 605 transitions, 13832 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 12:08:37,351 INFO L231 Difference]: Finished difference. Result has 239 places, 573 transitions, 12739 flow [2024-05-12 12:08:37,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12161, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12739, PETRI_PLACES=239, PETRI_TRANSITIONS=573} [2024-05-12 12:08:37,352 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-05-12 12:08:37,352 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 573 transitions, 12739 flow [2024-05-12 12:08:37,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:08:37,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:37,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 12:08:37,353 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:37,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1195350765, now seen corresponding path program 1 times [2024-05-12 12:08:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:37,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9854900] [2024-05-12 12:08:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:08:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9854900] [2024-05-12 12:08:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9854900] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:41,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:08:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403706867] [2024-05-12 12:08:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:08:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:08:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:08:42,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 573 transitions, 12739 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 12:08:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:42,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:43,432 INFO L124 PetriNetUnfolderBase]: 2187/3883 cut-off events. [2024-05-12 12:08:43,433 INFO L125 PetriNetUnfolderBase]: For 93911/93911 co-relation queries the response was YES. [2024-05-12 12:08:43,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32215 conditions, 3883 events. 2187/3883 cut-off events. For 93911/93911 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 25394 event pairs, 400 based on Foata normal form. 2/3782 useless extension candidates. Maximal degree in co-relation 32096. Up to 1865 conditions per place. [2024-05-12 12:08:43,481 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 491 selfloop transitions, 166 changer transitions 0/663 dead transitions. [2024-05-12 12:08:43,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 663 transitions, 15217 flow [2024-05-12 12:08:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-05-12 12:08:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-05-12 12:08:43,483 INFO L175 Difference]: Start difference. First operand has 239 places, 573 transitions, 12739 flow. Second operand 9 states and 177 transitions. [2024-05-12 12:08:43,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 663 transitions, 15217 flow [2024-05-12 12:08:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 663 transitions, 14931 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 12:08:43,843 INFO L231 Difference]: Finished difference. Result has 246 places, 599 transitions, 13376 flow [2024-05-12 12:08:43,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12453, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13376, PETRI_PLACES=246, PETRI_TRANSITIONS=599} [2024-05-12 12:08:43,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-05-12 12:08:43,845 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 599 transitions, 13376 flow [2024-05-12 12:08:43,845 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 12:08:43,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:43,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:43,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 12:08:43,845 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:43,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1195171027, now seen corresponding path program 1 times [2024-05-12 12:08:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027783001] [2024-05-12 12:08:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:48,717 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 12:08:48,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027783001] [2024-05-12 12:08:48,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027783001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:48,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:48,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:08:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175681926] [2024-05-12 12:08:48,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:48,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:08:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:08:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:08:48,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:48,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 599 transitions, 13376 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 12:08:48,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:48,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:48,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:50,510 INFO L124 PetriNetUnfolderBase]: 2373/4227 cut-off events. [2024-05-12 12:08:50,511 INFO L125 PetriNetUnfolderBase]: For 107920/107920 co-relation queries the response was YES. [2024-05-12 12:08:50,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35264 conditions, 4227 events. 2373/4227 cut-off events. For 107920/107920 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 27930 event pairs, 443 based on Foata normal form. 6/4108 useless extension candidates. Maximal degree in co-relation 35142. Up to 1647 conditions per place. [2024-05-12 12:08:50,558 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 513 selfloop transitions, 164 changer transitions 0/683 dead transitions. [2024-05-12 12:08:50,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 683 transitions, 15712 flow [2024-05-12 12:08:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:08:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:08:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-05-12 12:08:50,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-05-12 12:08:50,560 INFO L175 Difference]: Start difference. First operand has 246 places, 599 transitions, 13376 flow. Second operand 10 states and 205 transitions. [2024-05-12 12:08:50,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 683 transitions, 15712 flow [2024-05-12 12:08:51,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 683 transitions, 15508 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:51,033 INFO L231 Difference]: Finished difference. Result has 253 places, 610 transitions, 13670 flow [2024-05-12 12:08:51,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13172, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13670, PETRI_PLACES=253, PETRI_TRANSITIONS=610} [2024-05-12 12:08:51,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-05-12 12:08:51,035 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 610 transitions, 13670 flow [2024-05-12 12:08:51,035 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 12:08:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 12:08:51,035 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:51,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1157525805, now seen corresponding path program 2 times [2024-05-12 12:08:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507609639] [2024-05-12 12:08:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:08:55,569 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 12:08:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:08:55,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507609639] [2024-05-12 12:08:55,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507609639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:08:55,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:08:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:08:55,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185094082] [2024-05-12 12:08:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:08:55,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:08:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:08:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:08:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:08:55,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:08:55,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 610 transitions, 13670 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 12:08:55,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:08:55,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:08:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:08:57,300 INFO L124 PetriNetUnfolderBase]: 2470/4430 cut-off events. [2024-05-12 12:08:57,300 INFO L125 PetriNetUnfolderBase]: For 116610/116610 co-relation queries the response was YES. [2024-05-12 12:08:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37063 conditions, 4430 events. 2470/4430 cut-off events. For 116610/116610 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29840 event pairs, 428 based on Foata normal form. 1/4292 useless extension candidates. Maximal degree in co-relation 36939. Up to 2207 conditions per place. [2024-05-12 12:08:57,352 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 481 selfloop transitions, 202 changer transitions 0/689 dead transitions. [2024-05-12 12:08:57,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 689 transitions, 16108 flow [2024-05-12 12:08:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:08:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:08:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-05-12 12:08:57,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 12:08:57,354 INFO L175 Difference]: Start difference. First operand has 253 places, 610 transitions, 13670 flow. Second operand 9 states and 174 transitions. [2024-05-12 12:08:57,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 689 transitions, 16108 flow [2024-05-12 12:08:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 689 transitions, 15985 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-05-12 12:08:57,921 INFO L231 Difference]: Finished difference. Result has 261 places, 630 transitions, 14548 flow [2024-05-12 12:08:57,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13557, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14548, PETRI_PLACES=261, PETRI_TRANSITIONS=630} [2024-05-12 12:08:57,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-05-12 12:08:57,922 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 630 transitions, 14548 flow [2024-05-12 12:08:57,923 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 12:08:57,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:08:57,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:08:57,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 12:08:57,923 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:08:57,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:08:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1195171275, now seen corresponding path program 3 times [2024-05-12 12:08:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:08:57,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854393698] [2024-05-12 12:08:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:08:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:08:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854393698] [2024-05-12 12:09:02,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854393698] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:02,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677061895] [2024-05-12 12:09:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:02,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:02,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:02,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 630 transitions, 14548 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 12:09:02,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:02,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:02,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:04,047 INFO L124 PetriNetUnfolderBase]: 2468/4427 cut-off events. [2024-05-12 12:09:04,047 INFO L125 PetriNetUnfolderBase]: For 126643/126643 co-relation queries the response was YES. [2024-05-12 12:09:04,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38387 conditions, 4427 events. 2468/4427 cut-off events. For 126643/126643 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29853 event pairs, 425 based on Foata normal form. 1/4289 useless extension candidates. Maximal degree in co-relation 38258. Up to 2206 conditions per place. [2024-05-12 12:09:04,093 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 462 selfloop transitions, 221 changer transitions 0/689 dead transitions. [2024-05-12 12:09:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 689 transitions, 16670 flow [2024-05-12 12:09:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-05-12 12:09:04,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-05-12 12:09:04,095 INFO L175 Difference]: Start difference. First operand has 261 places, 630 transitions, 14548 flow. Second operand 9 states and 173 transitions. [2024-05-12 12:09:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 689 transitions, 16670 flow [2024-05-12 12:09:04,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 689 transitions, 16415 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-05-12 12:09:04,546 INFO L231 Difference]: Finished difference. Result has 267 places, 636 transitions, 14964 flow [2024-05-12 12:09:04,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14320, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14964, PETRI_PLACES=267, PETRI_TRANSITIONS=636} [2024-05-12 12:09:04,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-05-12 12:09:04,548 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 636 transitions, 14964 flow [2024-05-12 12:09:04,550 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 12:09:04,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:04,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 12:09:04,551 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:04,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 178559375, now seen corresponding path program 7 times [2024-05-12 12:09:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294077455] [2024-05-12 12:09:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:09,326 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 12:09:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294077455] [2024-05-12 12:09:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294077455] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319540768] [2024-05-12 12:09:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:09,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:09,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 636 transitions, 14964 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 12:09:09,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:09,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:09,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:10,989 INFO L124 PetriNetUnfolderBase]: 2513/4531 cut-off events. [2024-05-12 12:09:10,989 INFO L125 PetriNetUnfolderBase]: For 136470/136470 co-relation queries the response was YES. [2024-05-12 12:09:11,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39408 conditions, 4531 events. 2513/4531 cut-off events. For 136470/136470 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 30930 event pairs, 242 based on Foata normal form. 2/4388 useless extension candidates. Maximal degree in co-relation 39277. Up to 2960 conditions per place. [2024-05-12 12:09:11,044 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 494 selfloop transitions, 204 changer transitions 0/704 dead transitions. [2024-05-12 12:09:11,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 704 transitions, 17330 flow [2024-05-12 12:09:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 12:09:11,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-05-12 12:09:11,045 INFO L175 Difference]: Start difference. First operand has 267 places, 636 transitions, 14964 flow. Second operand 8 states and 146 transitions. [2024-05-12 12:09:11,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 704 transitions, 17330 flow [2024-05-12 12:09:11,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 704 transitions, 17110 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-05-12 12:09:11,543 INFO L231 Difference]: Finished difference. Result has 272 places, 662 transitions, 15959 flow [2024-05-12 12:09:11,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14756, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15959, PETRI_PLACES=272, PETRI_TRANSITIONS=662} [2024-05-12 12:09:11,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-05-12 12:09:11,544 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 662 transitions, 15959 flow [2024-05-12 12:09:11,544 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 12:09:11,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:11,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:11,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 12:09:11,545 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:11,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash 178619825, now seen corresponding path program 8 times [2024-05-12 12:09:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069815644] [2024-05-12 12:09:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:16,238 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 12:09:16,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069815644] [2024-05-12 12:09:16,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069815644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:16,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:16,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:16,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648370817] [2024-05-12 12:09:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:16,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:16,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:16,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 662 transitions, 15959 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 12:09:16,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:16,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:17,945 INFO L124 PetriNetUnfolderBase]: 2517/4541 cut-off events. [2024-05-12 12:09:17,945 INFO L125 PetriNetUnfolderBase]: For 141097/141097 co-relation queries the response was YES. [2024-05-12 12:09:17,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40261 conditions, 4541 events. 2517/4541 cut-off events. For 141097/141097 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30955 event pairs, 422 based on Foata normal form. 2/4398 useless extension candidates. Maximal degree in co-relation 40127. Up to 3353 conditions per place. [2024-05-12 12:09:17,999 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 489 selfloop transitions, 217 changer transitions 0/712 dead transitions. [2024-05-12 12:09:18,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 712 transitions, 17844 flow [2024-05-12 12:09:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 12:09:18,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 12:09:18,002 INFO L175 Difference]: Start difference. First operand has 272 places, 662 transitions, 15959 flow. Second operand 9 states and 161 transitions. [2024-05-12 12:09:18,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 712 transitions, 17844 flow [2024-05-12 12:09:18,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 712 transitions, 17644 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 12:09:18,552 INFO L231 Difference]: Finished difference. Result has 278 places, 665 transitions, 16365 flow [2024-05-12 12:09:18,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15777, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16365, PETRI_PLACES=278, PETRI_TRANSITIONS=665} [2024-05-12 12:09:18,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-05-12 12:09:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 665 transitions, 16365 flow [2024-05-12 12:09:18,563 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 12:09:18,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:18,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 12:09:18,563 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:18,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2005034693, now seen corresponding path program 3 times [2024-05-12 12:09:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:18,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910815004] [2024-05-12 12:09:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:18,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:22,353 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 12:09:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910815004] [2024-05-12 12:09:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910815004] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:22,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:09:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062572920] [2024-05-12 12:09:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:09:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:09:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:09:22,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:22,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 665 transitions, 16365 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:09:22,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:22,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:22,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:23,937 INFO L124 PetriNetUnfolderBase]: 2545/4591 cut-off events. [2024-05-12 12:09:23,938 INFO L125 PetriNetUnfolderBase]: For 148052/148052 co-relation queries the response was YES. [2024-05-12 12:09:23,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41068 conditions, 4591 events. 2545/4591 cut-off events. For 148052/148052 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 31521 event pairs, 685 based on Foata normal form. 1/4444 useless extension candidates. Maximal degree in co-relation 40932. Up to 3688 conditions per place. [2024-05-12 12:09:23,991 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 491 selfloop transitions, 212 changer transitions 0/709 dead transitions. [2024-05-12 12:09:23,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 709 transitions, 18821 flow [2024-05-12 12:09:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 12:09:23,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2024-05-12 12:09:23,993 INFO L175 Difference]: Start difference. First operand has 278 places, 665 transitions, 16365 flow. Second operand 8 states and 135 transitions. [2024-05-12 12:09:23,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 709 transitions, 18821 flow [2024-05-12 12:09:24,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 709 transitions, 18317 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-05-12 12:09:24,568 INFO L231 Difference]: Finished difference. Result has 281 places, 686 transitions, 17340 flow [2024-05-12 12:09:24,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15883, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17340, PETRI_PLACES=281, PETRI_TRANSITIONS=686} [2024-05-12 12:09:24,569 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-05-12 12:09:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 686 transitions, 17340 flow [2024-05-12 12:09:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 12:09:24,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:24,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 12:09:24,570 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:24,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 296885445, now seen corresponding path program 4 times [2024-05-12 12:09:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889061873] [2024-05-12 12:09:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:28,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889061873] [2024-05-12 12:09:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889061873] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:28,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:28,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834177175] [2024-05-12 12:09:28,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:28,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:28,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:28,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 686 transitions, 17340 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 12:09:28,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:28,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:30,407 INFO L124 PetriNetUnfolderBase]: 2678/4833 cut-off events. [2024-05-12 12:09:30,407 INFO L125 PetriNetUnfolderBase]: For 153285/153285 co-relation queries the response was YES. [2024-05-12 12:09:30,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43310 conditions, 4833 events. 2678/4833 cut-off events. For 153285/153285 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33342 event pairs, 438 based on Foata normal form. 1/4675 useless extension candidates. Maximal degree in co-relation 43172. Up to 2376 conditions per place. [2024-05-12 12:09:30,469 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 455 selfloop transitions, 289 changer transitions 0/750 dead transitions. [2024-05-12 12:09:30,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 750 transitions, 19851 flow [2024-05-12 12:09:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-05-12 12:09:30,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:09:30,470 INFO L175 Difference]: Start difference. First operand has 281 places, 686 transitions, 17340 flow. Second operand 8 states and 152 transitions. [2024-05-12 12:09:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 750 transitions, 19851 flow [2024-05-12 12:09:31,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 750 transitions, 19671 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 12:09:31,124 INFO L231 Difference]: Finished difference. Result has 287 places, 702 transitions, 18344 flow [2024-05-12 12:09:31,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17160, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18344, PETRI_PLACES=287, PETRI_TRANSITIONS=702} [2024-05-12 12:09:31,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-05-12 12:09:31,140 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 702 transitions, 18344 flow [2024-05-12 12:09:31,140 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 12:09:31,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:31,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 12:09:31,140 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2005041389, now seen corresponding path program 5 times [2024-05-12 12:09:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748061785] [2024-05-12 12:09:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:35,124 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 12:09:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748061785] [2024-05-12 12:09:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748061785] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:35,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155593875] [2024-05-12 12:09:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:35,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:35,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 702 transitions, 18344 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 12:09:35,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:35,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:35,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:36,955 INFO L124 PetriNetUnfolderBase]: 2676/4829 cut-off events. [2024-05-12 12:09:36,955 INFO L125 PetriNetUnfolderBase]: For 166972/166972 co-relation queries the response was YES. [2024-05-12 12:09:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44948 conditions, 4829 events. 2676/4829 cut-off events. For 166972/166972 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33325 event pairs, 435 based on Foata normal form. 1/4671 useless extension candidates. Maximal degree in co-relation 44807. Up to 2375 conditions per place. [2024-05-12 12:09:37,174 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 422 selfloop transitions, 320 changer transitions 0/748 dead transitions. [2024-05-12 12:09:37,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 748 transitions, 20491 flow [2024-05-12 12:09:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 12:09:37,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-05-12 12:09:37,177 INFO L175 Difference]: Start difference. First operand has 287 places, 702 transitions, 18344 flow. Second operand 8 states and 151 transitions. [2024-05-12 12:09:37,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 748 transitions, 20491 flow [2024-05-12 12:09:37,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 748 transitions, 20343 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-05-12 12:09:37,881 INFO L231 Difference]: Finished difference. Result has 294 places, 707 transitions, 19168 flow [2024-05-12 12:09:37,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18224, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19168, PETRI_PLACES=294, PETRI_TRANSITIONS=707} [2024-05-12 12:09:37,882 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-05-12 12:09:37,882 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 707 transitions, 19168 flow [2024-05-12 12:09:37,882 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 12:09:37,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:37,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:37,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 12:09:37,883 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:37,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 296712465, now seen corresponding path program 6 times [2024-05-12 12:09:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464574936] [2024-05-12 12:09:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:41,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464574936] [2024-05-12 12:09:41,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464574936] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:41,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:41,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:09:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389424794] [2024-05-12 12:09:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:41,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:09:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:09:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:09:41,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:41,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 707 transitions, 19168 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 12:09:41,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:41,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:41,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:43,679 INFO L124 PetriNetUnfolderBase]: 2672/4779 cut-off events. [2024-05-12 12:09:43,679 INFO L125 PetriNetUnfolderBase]: For 173191/173191 co-relation queries the response was YES. [2024-05-12 12:09:43,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45674 conditions, 4779 events. 2672/4779 cut-off events. For 173191/173191 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 32815 event pairs, 443 based on Foata normal form. 2/4638 useless extension candidates. Maximal degree in co-relation 45530. Up to 2372 conditions per place. [2024-05-12 12:09:43,737 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 470 selfloop transitions, 286 changer transitions 0/762 dead transitions. [2024-05-12 12:09:43,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 762 transitions, 21462 flow [2024-05-12 12:09:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:09:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:09:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-05-12 12:09:43,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 12:09:43,738 INFO L175 Difference]: Start difference. First operand has 294 places, 707 transitions, 19168 flow. Second operand 8 states and 156 transitions. [2024-05-12 12:09:43,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 762 transitions, 21462 flow [2024-05-12 12:09:44,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 762 transitions, 21032 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-05-12 12:09:44,414 INFO L231 Difference]: Finished difference. Result has 299 places, 709 transitions, 19734 flow [2024-05-12 12:09:44,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18750, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19734, PETRI_PLACES=299, PETRI_TRANSITIONS=709} [2024-05-12 12:09:44,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-05-12 12:09:44,415 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 709 transitions, 19734 flow [2024-05-12 12:09:44,415 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 12:09:44,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:44,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 12:09:44,416 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:44,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 296892203, now seen corresponding path program 2 times [2024-05-12 12:09:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153433274] [2024-05-12 12:09:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:49,120 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 12:09:49,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:49,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153433274] [2024-05-12 12:09:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153433274] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:49,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760136311] [2024-05-12 12:09:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:49,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:49,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 709 transitions, 19734 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 12:09:49,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:49,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:49,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:51,267 INFO L124 PetriNetUnfolderBase]: 2852/5119 cut-off events. [2024-05-12 12:09:51,267 INFO L125 PetriNetUnfolderBase]: For 187039/187039 co-relation queries the response was YES. [2024-05-12 12:09:51,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48646 conditions, 5119 events. 2852/5119 cut-off events. For 187039/187039 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35436 event pairs, 457 based on Foata normal form. 6/4962 useless extension candidates. Maximal degree in co-relation 48500. Up to 1868 conditions per place. [2024-05-12 12:09:51,326 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 514 selfloop transitions, 262 changer transitions 0/782 dead transitions. [2024-05-12 12:09:51,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 782 transitions, 22223 flow [2024-05-12 12:09:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-05-12 12:09:51,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 12:09:51,328 INFO L175 Difference]: Start difference. First operand has 299 places, 709 transitions, 19734 flow. Second operand 9 states and 180 transitions. [2024-05-12 12:09:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 782 transitions, 22223 flow [2024-05-12 12:09:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 782 transitions, 21466 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 12:09:52,027 INFO L231 Difference]: Finished difference. Result has 300 places, 719 transitions, 19655 flow [2024-05-12 12:09:52,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18985, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19655, PETRI_PLACES=300, PETRI_TRANSITIONS=719} [2024-05-12 12:09:52,028 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-05-12 12:09:52,028 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 719 transitions, 19655 flow [2024-05-12 12:09:52,028 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 12:09:52,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:52,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 12:09:52,028 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:52,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 345351873, now seen corresponding path program 3 times [2024-05-12 12:09:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633311355] [2024-05-12 12:09:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:09:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:09:56,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:09:56,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633311355] [2024-05-12 12:09:56,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633311355] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:09:56,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:09:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:09:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823698247] [2024-05-12 12:09:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:09:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:09:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:09:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:09:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:09:56,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:09:56,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 719 transitions, 19655 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 12:09:56,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:09:56,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:09:56,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:09:59,049 INFO L124 PetriNetUnfolderBase]: 2954/5353 cut-off events. [2024-05-12 12:09:59,050 INFO L125 PetriNetUnfolderBase]: For 190704/190704 co-relation queries the response was YES. [2024-05-12 12:09:59,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49790 conditions, 5353 events. 2954/5353 cut-off events. For 190704/190704 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37776 event pairs, 793 based on Foata normal form. 2/5166 useless extension candidates. Maximal degree in co-relation 49645. Up to 4505 conditions per place. [2024-05-12 12:09:59,116 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 717 selfloop transitions, 43 changer transitions 0/766 dead transitions. [2024-05-12 12:09:59,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 766 transitions, 21614 flow [2024-05-12 12:09:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:09:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:09:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:09:59,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:09:59,119 INFO L175 Difference]: Start difference. First operand has 300 places, 719 transitions, 19655 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:09:59,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 766 transitions, 21614 flow [2024-05-12 12:09:59,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 766 transitions, 21310 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 12:09:59,896 INFO L231 Difference]: Finished difference. Result has 305 places, 729 transitions, 19598 flow [2024-05-12 12:09:59,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19358, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19598, PETRI_PLACES=305, PETRI_TRANSITIONS=729} [2024-05-12 12:09:59,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-05-12 12:09:59,897 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 729 transitions, 19598 flow [2024-05-12 12:09:59,897 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 12:09:59,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:09:59,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:09:59,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 12:09:59,897 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:09:59,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:09:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -206470203, now seen corresponding path program 4 times [2024-05-12 12:09:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:09:59,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659207299] [2024-05-12 12:09:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:09:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:09:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:04,618 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 12:10:04,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:04,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659207299] [2024-05-12 12:10:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659207299] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:04,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725227051] [2024-05-12 12:10:04,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:04,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:04,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:04,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 729 transitions, 19598 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 12:10:04,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:04,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:04,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:06,696 INFO L124 PetriNetUnfolderBase]: 2998/5434 cut-off events. [2024-05-12 12:10:06,697 INFO L125 PetriNetUnfolderBase]: For 193255/193255 co-relation queries the response was YES. [2024-05-12 12:10:06,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49682 conditions, 5434 events. 2998/5434 cut-off events. For 193255/193255 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 38433 event pairs, 802 based on Foata normal form. 2/5244 useless extension candidates. Maximal degree in co-relation 49535. Up to 4333 conditions per place. [2024-05-12 12:10:06,784 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 698 selfloop transitions, 77 changer transitions 0/781 dead transitions. [2024-05-12 12:10:06,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 781 transitions, 21757 flow [2024-05-12 12:10:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:10:06,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:10:06,786 INFO L175 Difference]: Start difference. First operand has 305 places, 729 transitions, 19598 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:10:06,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 781 transitions, 21757 flow [2024-05-12 12:10:07,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 781 transitions, 21682 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 12:10:07,626 INFO L231 Difference]: Finished difference. Result has 311 places, 735 transitions, 19785 flow [2024-05-12 12:10:07,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19523, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19785, PETRI_PLACES=311, PETRI_TRANSITIONS=735} [2024-05-12 12:10:07,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-05-12 12:10:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 735 transitions, 19785 flow [2024-05-12 12:10:07,627 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 12:10:07,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 12:10:07,628 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 58630017, now seen corresponding path program 5 times [2024-05-12 12:10:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699316685] [2024-05-12 12:10:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:12,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699316685] [2024-05-12 12:10:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699316685] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:12,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322486724] [2024-05-12 12:10:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:12,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:12,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:12,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:12,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 735 transitions, 19785 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 12:10:12,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:12,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:12,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:14,254 INFO L124 PetriNetUnfolderBase]: 3012/5474 cut-off events. [2024-05-12 12:10:14,255 INFO L125 PetriNetUnfolderBase]: For 192995/192995 co-relation queries the response was YES. [2024-05-12 12:10:14,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49878 conditions, 5474 events. 3012/5474 cut-off events. For 192995/192995 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 38952 event pairs, 817 based on Foata normal form. 2/5278 useless extension candidates. Maximal degree in co-relation 49729. Up to 4643 conditions per place. [2024-05-12 12:10:14,327 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 727 selfloop transitions, 42 changer transitions 0/775 dead transitions. [2024-05-12 12:10:14,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 775 transitions, 21628 flow [2024-05-12 12:10:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 12:10:14,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 12:10:14,330 INFO L175 Difference]: Start difference. First operand has 311 places, 735 transitions, 19785 flow. Second operand 9 states and 156 transitions. [2024-05-12 12:10:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 775 transitions, 21628 flow [2024-05-12 12:10:15,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 775 transitions, 21501 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 12:10:15,214 INFO L231 Difference]: Finished difference. Result has 317 places, 743 transitions, 19909 flow [2024-05-12 12:10:15,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19664, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19909, PETRI_PLACES=317, PETRI_TRANSITIONS=743} [2024-05-12 12:10:15,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-05-12 12:10:15,215 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 743 transitions, 19909 flow [2024-05-12 12:10:15,220 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 12:10:15,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:15,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 12:10:15,221 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -963069381, now seen corresponding path program 7 times [2024-05-12 12:10:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650771126] [2024-05-12 12:10:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:19,238 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 12:10:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650771126] [2024-05-12 12:10:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650771126] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:10:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832058273] [2024-05-12 12:10:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:19,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:10:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:10:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:10:19,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:19,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 743 transitions, 19909 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 12:10:19,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:19,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:19,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:21,328 INFO L124 PetriNetUnfolderBase]: 3043/5506 cut-off events. [2024-05-12 12:10:21,328 INFO L125 PetriNetUnfolderBase]: For 192872/192872 co-relation queries the response was YES. [2024-05-12 12:10:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50098 conditions, 5506 events. 3043/5506 cut-off events. For 192872/192872 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 39152 event pairs, 838 based on Foata normal form. 1/5315 useless extension candidates. Maximal degree in co-relation 49945. Up to 4744 conditions per place. [2024-05-12 12:10:21,426 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 731 selfloop transitions, 37 changer transitions 0/774 dead transitions. [2024-05-12 12:10:21,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 774 transitions, 21724 flow [2024-05-12 12:10:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:10:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:10:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-05-12 12:10:21,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-05-12 12:10:21,428 INFO L175 Difference]: Start difference. First operand has 317 places, 743 transitions, 19909 flow. Second operand 8 states and 137 transitions. [2024-05-12 12:10:21,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 774 transitions, 21724 flow [2024-05-12 12:10:22,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 774 transitions, 21657 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-05-12 12:10:22,596 INFO L231 Difference]: Finished difference. Result has 322 places, 747 transitions, 20011 flow [2024-05-12 12:10:22,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19842, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20011, PETRI_PLACES=322, PETRI_TRANSITIONS=747} [2024-05-12 12:10:22,597 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 280 predicate places. [2024-05-12 12:10:22,597 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 747 transitions, 20011 flow [2024-05-12 12:10:22,597 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 12:10:22,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:22,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:22,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 12:10:22,598 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:22,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1119709281, now seen corresponding path program 6 times [2024-05-12 12:10:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:22,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831257810] [2024-05-12 12:10:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:22,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:27,373 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 12:10:27,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831257810] [2024-05-12 12:10:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831257810] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:10:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284177439] [2024-05-12 12:10:27,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:10:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:10:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:10:27,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:27,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 747 transitions, 20011 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 12:10:27,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:27,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:29,576 INFO L124 PetriNetUnfolderBase]: 3049/5545 cut-off events. [2024-05-12 12:10:29,576 INFO L125 PetriNetUnfolderBase]: For 194865/194865 co-relation queries the response was YES. [2024-05-12 12:10:29,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50212 conditions, 5545 events. 3049/5545 cut-off events. For 194865/194865 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 39574 event pairs, 820 based on Foata normal form. 2/5345 useless extension candidates. Maximal degree in co-relation 50058. Up to 4670 conditions per place. [2024-05-12 12:10:29,654 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 729 selfloop transitions, 49 changer transitions 0/784 dead transitions. [2024-05-12 12:10:29,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 784 transitions, 21866 flow [2024-05-12 12:10:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 12:10:29,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-05-12 12:10:29,656 INFO L175 Difference]: Start difference. First operand has 322 places, 747 transitions, 20011 flow. Second operand 9 states and 155 transitions. [2024-05-12 12:10:29,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 784 transitions, 21866 flow [2024-05-12 12:10:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 784 transitions, 21734 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-05-12 12:10:30,531 INFO L231 Difference]: Finished difference. Result has 325 places, 749 transitions, 20034 flow [2024-05-12 12:10:30,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19893, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20034, PETRI_PLACES=325, PETRI_TRANSITIONS=749} [2024-05-12 12:10:30,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-05-12 12:10:30,532 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 749 transitions, 20034 flow [2024-05-12 12:10:30,532 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 12:10:30,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:30,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 12:10:30,533 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:30,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 49136329, now seen corresponding path program 8 times [2024-05-12 12:10:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298029039] [2024-05-12 12:10:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:34,849 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 12:10:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298029039] [2024-05-12 12:10:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298029039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:34,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:34,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:10:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487577028] [2024-05-12 12:10:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:34,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:10:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:10:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:10:34,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:34,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 749 transitions, 20034 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 12:10:34,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:34,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:34,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:37,027 INFO L124 PetriNetUnfolderBase]: 3073/5561 cut-off events. [2024-05-12 12:10:37,027 INFO L125 PetriNetUnfolderBase]: For 194299/194299 co-relation queries the response was YES. [2024-05-12 12:10:37,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50321 conditions, 5561 events. 3073/5561 cut-off events. For 194299/194299 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39680 event pairs, 857 based on Foata normal form. 1/5367 useless extension candidates. Maximal degree in co-relation 50166. Up to 4777 conditions per place. [2024-05-12 12:10:37,105 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 724 selfloop transitions, 60 changer transitions 0/790 dead transitions. [2024-05-12 12:10:37,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 790 transitions, 22258 flow [2024-05-12 12:10:37,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:10:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:10:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 12:10:37,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2024-05-12 12:10:37,106 INFO L175 Difference]: Start difference. First operand has 325 places, 749 transitions, 20034 flow. Second operand 8 states and 135 transitions. [2024-05-12 12:10:37,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 790 transitions, 22258 flow [2024-05-12 12:10:38,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 790 transitions, 22133 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 12:10:38,039 INFO L231 Difference]: Finished difference. Result has 328 places, 768 transitions, 20487 flow [2024-05-12 12:10:38,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19919, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20487, PETRI_PLACES=328, PETRI_TRANSITIONS=768} [2024-05-12 12:10:38,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-05-12 12:10:38,041 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 768 transitions, 20487 flow [2024-05-12 12:10:38,041 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 12:10:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:38,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:38,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 12:10:38,041 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:38,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1119716039, now seen corresponding path program 9 times [2024-05-12 12:10:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518838476] [2024-05-12 12:10:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518838476] [2024-05-12 12:10:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518838476] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:10:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676026264] [2024-05-12 12:10:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:10:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:10:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:10:42,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:42,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 768 transitions, 20487 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 12:10:42,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:44,191 INFO L124 PetriNetUnfolderBase]: 3086/5590 cut-off events. [2024-05-12 12:10:44,192 INFO L125 PetriNetUnfolderBase]: For 196368/196368 co-relation queries the response was YES. [2024-05-12 12:10:44,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50653 conditions, 5590 events. 3086/5590 cut-off events. For 196368/196368 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39940 event pairs, 846 based on Foata normal form. 1/5394 useless extension candidates. Maximal degree in co-relation 50495. Up to 4728 conditions per place. [2024-05-12 12:10:44,263 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 731 selfloop transitions, 72 changer transitions 0/809 dead transitions. [2024-05-12 12:10:44,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 809 transitions, 22606 flow [2024-05-12 12:10:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:10:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:10:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:10:44,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:10:44,264 INFO L175 Difference]: Start difference. First operand has 328 places, 768 transitions, 20487 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:10:44,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 809 transitions, 22606 flow [2024-05-12 12:10:45,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 809 transitions, 22456 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-05-12 12:10:45,125 INFO L231 Difference]: Finished difference. Result has 334 places, 777 transitions, 20761 flow [2024-05-12 12:10:45,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20347, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20761, PETRI_PLACES=334, PETRI_TRANSITIONS=777} [2024-05-12 12:10:45,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-05-12 12:10:45,126 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 777 transitions, 20761 flow [2024-05-12 12:10:45,127 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 12:10:45,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:45,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 12:10:45,127 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1110203968, now seen corresponding path program 1 times [2024-05-12 12:10:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544884945] [2024-05-12 12:10:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:50,430 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 12:10:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:50,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544884945] [2024-05-12 12:10:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544884945] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:10:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613831280] [2024-05-12 12:10:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:10:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:10:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:10:50,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:10:50,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 777 transitions, 20761 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 12:10:50,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:50,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:10:50,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:52,696 INFO L124 PetriNetUnfolderBase]: 3083/5622 cut-off events. [2024-05-12 12:10:52,697 INFO L125 PetriNetUnfolderBase]: For 196173/196173 co-relation queries the response was YES. [2024-05-12 12:10:52,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50553 conditions, 5622 events. 3083/5622 cut-off events. For 196173/196173 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 40343 event pairs, 828 based on Foata normal form. 2/5414 useless extension candidates. Maximal degree in co-relation 50391. Up to 4777 conditions per place. [2024-05-12 12:10:52,775 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 760 selfloop transitions, 42 changer transitions 0/808 dead transitions. [2024-05-12 12:10:52,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 808 transitions, 22539 flow [2024-05-12 12:10:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:10:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:10:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 12:10:52,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-05-12 12:10:52,777 INFO L175 Difference]: Start difference. First operand has 334 places, 777 transitions, 20761 flow. Second operand 9 states and 150 transitions. [2024-05-12 12:10:52,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 808 transitions, 22539 flow [2024-05-12 12:10:53,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 808 transitions, 22388 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-05-12 12:10:53,867 INFO L231 Difference]: Finished difference. Result has 339 places, 777 transitions, 20700 flow [2024-05-12 12:10:53,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20610, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20700, PETRI_PLACES=339, PETRI_TRANSITIONS=777} [2024-05-12 12:10:53,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-05-12 12:10:53,868 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 777 transitions, 20700 flow [2024-05-12 12:10:53,868 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 12:10:53,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:53,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:10:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 12:10:53,869 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:53,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -928692278, now seen corresponding path program 1 times [2024-05-12 12:10:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387640000] [2024-05-12 12:10:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:10:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:10:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:10:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387640000] [2024-05-12 12:10:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387640000] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:10:54,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:10:54,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:10:54,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797720658] [2024-05-12 12:10:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:10:54,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:10:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:10:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:10:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:10:54,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 12:10:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 777 transitions, 20700 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 12:10:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:10:54,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 12:10:54,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:10:56,552 INFO L124 PetriNetUnfolderBase]: 3317/5799 cut-off events. [2024-05-12 12:10:56,553 INFO L125 PetriNetUnfolderBase]: For 181297/181525 co-relation queries the response was YES. [2024-05-12 12:10:56,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49918 conditions, 5799 events. 3317/5799 cut-off events. For 181297/181525 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40248 event pairs, 537 based on Foata normal form. 178/5832 useless extension candidates. Maximal degree in co-relation 49754. Up to 1423 conditions per place. [2024-05-12 12:10:56,619 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 334 selfloop transitions, 124 changer transitions 433/1073 dead transitions. [2024-05-12 12:10:56,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1073 transitions, 27166 flow [2024-05-12 12:10:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:10:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:10:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-05-12 12:10:56,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153508771929824 [2024-05-12 12:10:56,621 INFO L175 Difference]: Start difference. First operand has 339 places, 777 transitions, 20700 flow. Second operand 12 states and 235 transitions. [2024-05-12 12:10:56,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1073 transitions, 27166 flow [2024-05-12 12:10:57,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 1073 transitions, 26963 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 12:10:57,464 INFO L231 Difference]: Finished difference. Result has 349 places, 596 transitions, 16175 flow [2024-05-12 12:10:57,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20587, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16175, PETRI_PLACES=349, PETRI_TRANSITIONS=596} [2024-05-12 12:10:57,467 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-05-12 12:10:57,467 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 596 transitions, 16175 flow [2024-05-12 12:10:57,467 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 12:10:57,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:10:57,467 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 12:10:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 12:10:57,467 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:10:57,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:10:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash 500622303, now seen corresponding path program 1 times [2024-05-12 12:10:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:10:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453022092] [2024-05-12 12:10:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:10:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:10:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453022092] [2024-05-12 12:11:02,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453022092] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:02,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:02,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:02,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939554299] [2024-05-12 12:11:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:02,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:02,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:02,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 596 transitions, 16175 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 12:11:02,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:02,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:04,545 INFO L124 PetriNetUnfolderBase]: 2840/5068 cut-off events. [2024-05-12 12:11:04,545 INFO L125 PetriNetUnfolderBase]: For 191956/191958 co-relation queries the response was YES. [2024-05-12 12:11:04,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48441 conditions, 5068 events. 2840/5068 cut-off events. For 191956/191958 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 34551 event pairs, 611 based on Foata normal form. 1/5053 useless extension candidates. Maximal degree in co-relation 48272. Up to 3897 conditions per place. [2024-05-12 12:11:04,610 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 440 selfloop transitions, 146 changer transitions 110/703 dead transitions. [2024-05-12 12:11:04,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 703 transitions, 19098 flow [2024-05-12 12:11:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:11:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:11:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 12:11:04,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:11:04,616 INFO L175 Difference]: Start difference. First operand has 349 places, 596 transitions, 16175 flow. Second operand 10 states and 180 transitions. [2024-05-12 12:11:04,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 703 transitions, 19098 flow [2024-05-12 12:11:05,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 703 transitions, 16407 flow, removed 152 selfloop flow, removed 28 redundant places. [2024-05-12 12:11:05,579 INFO L231 Difference]: Finished difference. Result has 334 places, 551 transitions, 13351 flow [2024-05-12 12:11:05,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13720, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13351, PETRI_PLACES=334, PETRI_TRANSITIONS=551} [2024-05-12 12:11:05,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-05-12 12:11:05,580 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 551 transitions, 13351 flow [2024-05-12 12:11:05,581 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 12:11:05,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:05,581 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 12:11:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 12:11:05,581 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 506631053, now seen corresponding path program 2 times [2024-05-12 12:11:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:05,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408882443] [2024-05-12 12:11:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:10,397 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 12:11:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:10,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408882443] [2024-05-12 12:11:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408882443] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:10,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:11:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070197728] [2024-05-12 12:11:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:11:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:11:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:11:10,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:10,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 551 transitions, 13351 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 12:11:10,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:10,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:10,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:11,994 INFO L124 PetriNetUnfolderBase]: 2474/4310 cut-off events. [2024-05-12 12:11:11,995 INFO L125 PetriNetUnfolderBase]: For 153976/153978 co-relation queries the response was YES. [2024-05-12 12:11:12,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37931 conditions, 4310 events. 2474/4310 cut-off events. For 153976/153978 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 27706 event pairs, 541 based on Foata normal form. 1/4308 useless extension candidates. Maximal degree in co-relation 37771. Up to 3330 conditions per place. [2024-05-12 12:11:12,049 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 423 selfloop transitions, 162 changer transitions 0/592 dead transitions. [2024-05-12 12:11:12,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 592 transitions, 15000 flow [2024-05-12 12:11:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 12:11:12,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 12:11:12,051 INFO L175 Difference]: Start difference. First operand has 334 places, 551 transitions, 13351 flow. Second operand 9 states and 158 transitions. [2024-05-12 12:11:12,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 592 transitions, 15000 flow [2024-05-12 12:11:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 592 transitions, 13355 flow, removed 58 selfloop flow, removed 39 redundant places. [2024-05-12 12:11:12,770 INFO L231 Difference]: Finished difference. Result has 298 places, 551 transitions, 12087 flow [2024-05-12 12:11:12,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11754, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12087, PETRI_PLACES=298, PETRI_TRANSITIONS=551} [2024-05-12 12:11:12,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-05-12 12:11:12,771 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 551 transitions, 12087 flow [2024-05-12 12:11:12,771 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 12:11:12,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:12,771 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 12:11:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 12:11:12,772 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:12,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1726590356, now seen corresponding path program 1 times [2024-05-12 12:11:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518688173] [2024-05-12 12:11:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:17,412 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 12:11:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518688173] [2024-05-12 12:11:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518688173] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:11:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909596273] [2024-05-12 12:11:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:11:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:11:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:11:17,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:17,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 551 transitions, 12087 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 12:11:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:17,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:18,964 INFO L124 PetriNetUnfolderBase]: 2529/4413 cut-off events. [2024-05-12 12:11:18,964 INFO L125 PetriNetUnfolderBase]: For 140997/140999 co-relation queries the response was YES. [2024-05-12 12:11:18,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36168 conditions, 4413 events. 2529/4413 cut-off events. For 140997/140999 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28644 event pairs, 491 based on Foata normal form. 2/4411 useless extension candidates. Maximal degree in co-relation 36031. Up to 3203 conditions per place. [2024-05-12 12:11:19,016 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 406 selfloop transitions, 180 changer transitions 0/593 dead transitions. [2024-05-12 12:11:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 593 transitions, 13679 flow [2024-05-12 12:11:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 12:11:19,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 12:11:19,018 INFO L175 Difference]: Start difference. First operand has 298 places, 551 transitions, 12087 flow. Second operand 9 states and 160 transitions. [2024-05-12 12:11:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 593 transitions, 13679 flow [2024-05-12 12:11:19,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 593 transitions, 13187 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-05-12 12:11:19,570 INFO L231 Difference]: Finished difference. Result has 297 places, 557 transitions, 12059 flow [2024-05-12 12:11:19,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11597, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12059, PETRI_PLACES=297, PETRI_TRANSITIONS=557} [2024-05-12 12:11:19,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-05-12 12:11:19,571 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 557 transitions, 12059 flow [2024-05-12 12:11:19,571 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 12:11:19,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:19,571 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 12:11:19,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 12:11:19,572 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:19,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1598683610, now seen corresponding path program 2 times [2024-05-12 12:11:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278269693] [2024-05-12 12:11:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:19,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:24,445 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 12:11:24,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278269693] [2024-05-12 12:11:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278269693] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:24,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:24,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:11:24,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785528286] [2024-05-12 12:11:24,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:24,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:11:24,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:11:24,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:11:24,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:24,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 557 transitions, 12059 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 12:11:24,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:24,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:24,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:26,100 INFO L124 PetriNetUnfolderBase]: 2549/4451 cut-off events. [2024-05-12 12:11:26,101 INFO L125 PetriNetUnfolderBase]: For 143550/143552 co-relation queries the response was YES. [2024-05-12 12:11:26,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36117 conditions, 4451 events. 2549/4451 cut-off events. For 143550/143552 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28933 event pairs, 519 based on Foata normal form. 2/4449 useless extension candidates. Maximal degree in co-relation 35980. Up to 3355 conditions per place. [2024-05-12 12:11:26,147 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 400 selfloop transitions, 186 changer transitions 0/593 dead transitions. [2024-05-12 12:11:26,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 593 transitions, 13507 flow [2024-05-12 12:11:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 12:11:26,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-05-12 12:11:26,149 INFO L175 Difference]: Start difference. First operand has 297 places, 557 transitions, 12059 flow. Second operand 9 states and 157 transitions. [2024-05-12 12:11:26,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 593 transitions, 13507 flow [2024-05-12 12:11:26,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 593 transitions, 13296 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:11:26,662 INFO L231 Difference]: Finished difference. Result has 301 places, 559 transitions, 12255 flow [2024-05-12 12:11:26,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11848, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12255, PETRI_PLACES=301, PETRI_TRANSITIONS=559} [2024-05-12 12:11:26,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-05-12 12:11:26,663 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 559 transitions, 12255 flow [2024-05-12 12:11:26,663 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 12:11:26,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:26,664 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 12:11:26,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 12:11:26,664 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:26,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:26,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1604190295, now seen corresponding path program 3 times [2024-05-12 12:11:26,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539567621] [2024-05-12 12:11:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:26,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:31,134 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 12:11:31,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:31,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539567621] [2024-05-12 12:11:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539567621] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:11:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031064520] [2024-05-12 12:11:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:31,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:11:31,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:11:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:11:31,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:31,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 559 transitions, 12255 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 12:11:31,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:31,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:31,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:32,818 INFO L124 PetriNetUnfolderBase]: 2558/4464 cut-off events. [2024-05-12 12:11:32,818 INFO L125 PetriNetUnfolderBase]: For 142334/142336 co-relation queries the response was YES. [2024-05-12 12:11:32,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36693 conditions, 4464 events. 2558/4464 cut-off events. For 142334/142336 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 29053 event pairs, 546 based on Foata normal form. 1/4462 useless extension candidates. Maximal degree in co-relation 36554. Up to 3423 conditions per place. [2024-05-12 12:11:32,869 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 422 selfloop transitions, 181 changer transitions 0/610 dead transitions. [2024-05-12 12:11:32,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 610 transitions, 14080 flow [2024-05-12 12:11:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-05-12 12:11:32,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:11:32,870 INFO L175 Difference]: Start difference. First operand has 301 places, 559 transitions, 12255 flow. Second operand 9 states and 162 transitions. [2024-05-12 12:11:32,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 610 transitions, 14080 flow [2024-05-12 12:11:33,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 610 transitions, 13804 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 12:11:33,438 INFO L231 Difference]: Finished difference. Result has 304 places, 566 transitions, 12427 flow [2024-05-12 12:11:33,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11979, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12427, PETRI_PLACES=304, PETRI_TRANSITIONS=566} [2024-05-12 12:11:33,439 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-05-12 12:11:33,439 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 566 transitions, 12427 flow [2024-05-12 12:11:33,439 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 12:11:33,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:33,440 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 12:11:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 12:11:33,440 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:33,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1604190140, now seen corresponding path program 3 times [2024-05-12 12:11:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:33,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201772261] [2024-05-12 12:11:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201772261] [2024-05-12 12:11:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201772261] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:38,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:38,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:11:38,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808972903] [2024-05-12 12:11:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:38,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:11:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:38,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:11:38,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:11:38,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:38,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 566 transitions, 12427 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 12:11:38,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:38,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:38,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:40,071 INFO L124 PetriNetUnfolderBase]: 2555/4461 cut-off events. [2024-05-12 12:11:40,072 INFO L125 PetriNetUnfolderBase]: For 144207/144209 co-relation queries the response was YES. [2024-05-12 12:11:40,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36712 conditions, 4461 events. 2555/4461 cut-off events. For 144207/144209 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 29049 event pairs, 528 based on Foata normal form. 2/4460 useless extension candidates. Maximal degree in co-relation 36572. Up to 3632 conditions per place. [2024-05-12 12:11:40,127 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 444 selfloop transitions, 153 changer transitions 0/604 dead transitions. [2024-05-12 12:11:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 604 transitions, 13958 flow [2024-05-12 12:11:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:11:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:11:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 12:11:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 12:11:40,128 INFO L175 Difference]: Start difference. First operand has 304 places, 566 transitions, 12427 flow. Second operand 9 states and 159 transitions. [2024-05-12 12:11:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 604 transitions, 13958 flow [2024-05-12 12:11:40,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 604 transitions, 13752 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 12:11:40,709 INFO L231 Difference]: Finished difference. Result has 309 places, 566 transitions, 12544 flow [2024-05-12 12:11:40,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12221, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12544, PETRI_PLACES=309, PETRI_TRANSITIONS=566} [2024-05-12 12:11:40,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-05-12 12:11:40,710 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 566 transitions, 12544 flow [2024-05-12 12:11:40,710 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 12:11:40,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:40,710 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 12:11:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 12:11:40,710 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:40,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1604196092, now seen corresponding path program 1 times [2024-05-12 12:11:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:40,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759394923] [2024-05-12 12:11:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:45,328 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 12:11:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:45,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759394923] [2024-05-12 12:11:45,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759394923] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:45,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:45,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388808437] [2024-05-12 12:11:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:45,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:45,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:45,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 566 transitions, 12544 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 12:11:45,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:45,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:45,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:47,109 INFO L124 PetriNetUnfolderBase]: 2770/4832 cut-off events. [2024-05-12 12:11:47,109 INFO L125 PetriNetUnfolderBase]: For 159085/159092 co-relation queries the response was YES. [2024-05-12 12:11:47,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38879 conditions, 4832 events. 2770/4832 cut-off events. For 159085/159092 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31756 event pairs, 513 based on Foata normal form. 7/4834 useless extension candidates. Maximal degree in co-relation 38738. Up to 1885 conditions per place. [2024-05-12 12:11:47,168 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 448 selfloop transitions, 216 changer transitions 0/671 dead transitions. [2024-05-12 12:11:47,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 671 transitions, 15148 flow [2024-05-12 12:11:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:11:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:11:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-05-12 12:11:47,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-05-12 12:11:47,170 INFO L175 Difference]: Start difference. First operand has 309 places, 566 transitions, 12544 flow. Second operand 10 states and 200 transitions. [2024-05-12 12:11:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 671 transitions, 15148 flow [2024-05-12 12:11:47,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 671 transitions, 14874 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 12:11:47,950 INFO L231 Difference]: Finished difference. Result has 314 places, 586 transitions, 13025 flow [2024-05-12 12:11:47,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12270, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13025, PETRI_PLACES=314, PETRI_TRANSITIONS=586} [2024-05-12 12:11:47,951 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-05-12 12:11:47,951 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 586 transitions, 13025 flow [2024-05-12 12:11:47,951 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 12:11:47,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:47,951 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 12:11:47,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 12:11:47,951 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:47,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1604397685, now seen corresponding path program 4 times [2024-05-12 12:11:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699085146] [2024-05-12 12:11:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:11:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:11:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:11:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699085146] [2024-05-12 12:11:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699085146] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:11:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:11:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:11:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944182734] [2024-05-12 12:11:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:11:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:11:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:11:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:11:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:11:52,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:11:52,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 586 transitions, 13025 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 12:11:52,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:11:52,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:11:52,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:11:54,737 INFO L124 PetriNetUnfolderBase]: 2777/4854 cut-off events. [2024-05-12 12:11:54,738 INFO L125 PetriNetUnfolderBase]: For 166521/166526 co-relation queries the response was YES. [2024-05-12 12:11:54,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40286 conditions, 4854 events. 2777/4854 cut-off events. For 166521/166526 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 32008 event pairs, 590 based on Foata normal form. 1/4853 useless extension candidates. Maximal degree in co-relation 40142. Up to 3856 conditions per place. [2024-05-12 12:11:54,795 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 461 selfloop transitions, 162 changer transitions 0/630 dead transitions. [2024-05-12 12:11:54,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 630 transitions, 14740 flow [2024-05-12 12:11:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:11:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:11:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 12:11:54,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-05-12 12:11:54,796 INFO L175 Difference]: Start difference. First operand has 314 places, 586 transitions, 13025 flow. Second operand 10 states and 169 transitions. [2024-05-12 12:11:54,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 630 transitions, 14740 flow [2024-05-12 12:11:55,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 630 transitions, 14525 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 12:11:55,476 INFO L231 Difference]: Finished difference. Result has 319 places, 588 transitions, 13179 flow [2024-05-12 12:11:55,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12811, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13179, PETRI_PLACES=319, PETRI_TRANSITIONS=588} [2024-05-12 12:11:55,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-05-12 12:11:55,477 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 588 transitions, 13179 flow [2024-05-12 12:11:55,477 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 12:11:55,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:11:55,477 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 12:11:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 12:11:55,477 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:11:55,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:11:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1604195875, now seen corresponding path program 5 times [2024-05-12 12:11:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:11:55,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017482614] [2024-05-12 12:11:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:11:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:11:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:00,027 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 12:12:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017482614] [2024-05-12 12:12:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017482614] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:00,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65877055] [2024-05-12 12:12:00,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:00,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:00,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 588 transitions, 13179 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 12:12:00,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:00,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:00,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:01,922 INFO L124 PetriNetUnfolderBase]: 2786/4868 cut-off events. [2024-05-12 12:12:01,923 INFO L125 PetriNetUnfolderBase]: For 169923/169928 co-relation queries the response was YES. [2024-05-12 12:12:01,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40143 conditions, 4868 events. 2786/4868 cut-off events. For 169923/169928 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32106 event pairs, 581 based on Foata normal form. 1/4867 useless extension candidates. Maximal degree in co-relation 39998. Up to 3870 conditions per place. [2024-05-12 12:12:01,981 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 475 selfloop transitions, 152 changer transitions 0/634 dead transitions. [2024-05-12 12:12:01,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 634 transitions, 14936 flow [2024-05-12 12:12:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 12:12:01,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:12:01,983 INFO L175 Difference]: Start difference. First operand has 319 places, 588 transitions, 13179 flow. Second operand 10 states and 170 transitions. [2024-05-12 12:12:01,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 634 transitions, 14936 flow [2024-05-12 12:12:02,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 634 transitions, 14721 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 12:12:02,789 INFO L231 Difference]: Finished difference. Result has 323 places, 590 transitions, 13316 flow [2024-05-12 12:12:02,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12964, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13316, PETRI_PLACES=323, PETRI_TRANSITIONS=590} [2024-05-12 12:12:02,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-05-12 12:12:02,789 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 590 transitions, 13316 flow [2024-05-12 12:12:02,790 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 12:12:02,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:02,790 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 12:12:02,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 12:12:02,790 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:02,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1598833712, now seen corresponding path program 2 times [2024-05-12 12:12:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:02,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819157119] [2024-05-12 12:12:02,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:02,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819157119] [2024-05-12 12:12:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819157119] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:07,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343203046] [2024-05-12 12:12:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:07,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:07,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:07,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:07,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 590 transitions, 13316 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 12:12:07,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:07,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:07,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:09,779 INFO L124 PetriNetUnfolderBase]: 2870/4993 cut-off events. [2024-05-12 12:12:09,779 INFO L125 PetriNetUnfolderBase]: For 173169/173183 co-relation queries the response was YES. [2024-05-12 12:12:09,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40896 conditions, 4993 events. 2870/4993 cut-off events. For 173169/173183 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 32969 event pairs, 600 based on Foata normal form. 17/5006 useless extension candidates. Maximal degree in co-relation 40751. Up to 1940 conditions per place. [2024-05-12 12:12:09,829 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 469 selfloop transitions, 205 changer transitions 0/681 dead transitions. [2024-05-12 12:12:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 681 transitions, 15808 flow [2024-05-12 12:12:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-05-12 12:12:09,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-05-12 12:12:09,831 INFO L175 Difference]: Start difference. First operand has 323 places, 590 transitions, 13316 flow. Second operand 10 states and 199 transitions. [2024-05-12 12:12:09,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 681 transitions, 15808 flow [2024-05-12 12:12:10,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 681 transitions, 15580 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 12:12:10,586 INFO L231 Difference]: Finished difference. Result has 328 places, 606 transitions, 13821 flow [2024-05-12 12:12:10,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13094, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13821, PETRI_PLACES=328, PETRI_TRANSITIONS=606} [2024-05-12 12:12:10,597 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-05-12 12:12:10,597 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 606 transitions, 13821 flow [2024-05-12 12:12:10,597 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 12:12:10,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:10,597 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 12:12:10,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 12:12:10,598 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:10,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1598833495, now seen corresponding path program 6 times [2024-05-12 12:12:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:10,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189500108] [2024-05-12 12:12:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:15,556 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 12:12:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189500108] [2024-05-12 12:12:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189500108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:15,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680051819] [2024-05-12 12:12:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:15,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:15,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:15,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 606 transitions, 13821 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 12:12:15,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:15,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:15,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:17,567 INFO L124 PetriNetUnfolderBase]: 2869/5018 cut-off events. [2024-05-12 12:12:17,567 INFO L125 PetriNetUnfolderBase]: For 176564/176569 co-relation queries the response was YES. [2024-05-12 12:12:17,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42027 conditions, 5018 events. 2869/5018 cut-off events. For 176564/176569 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33312 event pairs, 570 based on Foata normal form. 1/5016 useless extension candidates. Maximal degree in co-relation 41880. Up to 3331 conditions per place. [2024-05-12 12:12:17,633 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 434 selfloop transitions, 205 changer transitions 0/646 dead transitions. [2024-05-12 12:12:17,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 646 transitions, 15548 flow [2024-05-12 12:12:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 12:12:17,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 12:12:17,634 INFO L175 Difference]: Start difference. First operand has 328 places, 606 transitions, 13821 flow. Second operand 10 states and 177 transitions. [2024-05-12 12:12:17,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 646 transitions, 15548 flow [2024-05-12 12:12:18,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 646 transitions, 15299 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 12:12:18,472 INFO L231 Difference]: Finished difference. Result has 332 places, 608 transitions, 14032 flow [2024-05-12 12:12:18,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13579, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14032, PETRI_PLACES=332, PETRI_TRANSITIONS=608} [2024-05-12 12:12:18,473 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-05-12 12:12:18,473 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 608 transitions, 14032 flow [2024-05-12 12:12:18,473 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 12:12:18,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:18,473 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 12:12:18,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 12:12:18,473 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:18,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1604397902, now seen corresponding path program 3 times [2024-05-12 12:12:18,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:18,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724687885] [2024-05-12 12:12:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:22,985 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 12:12:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724687885] [2024-05-12 12:12:22,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724687885] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:22,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:22,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190899481] [2024-05-12 12:12:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:22,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:23,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 608 transitions, 14032 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 12:12:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:24,858 INFO L124 PetriNetUnfolderBase]: 2890/5043 cut-off events. [2024-05-12 12:12:24,859 INFO L125 PetriNetUnfolderBase]: For 185186/185199 co-relation queries the response was YES. [2024-05-12 12:12:24,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42037 conditions, 5043 events. 2890/5043 cut-off events. For 185186/185199 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33345 event pairs, 540 based on Foata normal form. 13/5051 useless extension candidates. Maximal degree in co-relation 41889. Up to 1942 conditions per place. [2024-05-12 12:12:24,922 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 435 selfloop transitions, 242 changer transitions 0/684 dead transitions. [2024-05-12 12:12:24,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 684 transitions, 16360 flow [2024-05-12 12:12:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-05-12 12:12:24,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-05-12 12:12:24,923 INFO L175 Difference]: Start difference. First operand has 332 places, 608 transitions, 14032 flow. Second operand 10 states and 199 transitions. [2024-05-12 12:12:24,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 684 transitions, 16360 flow [2024-05-12 12:12:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 684 transitions, 15955 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 12:12:25,696 INFO L231 Difference]: Finished difference. Result has 335 places, 611 transitions, 14153 flow [2024-05-12 12:12:25,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13627, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14153, PETRI_PLACES=335, PETRI_TRANSITIONS=611} [2024-05-12 12:12:25,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-05-12 12:12:25,697 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 611 transitions, 14153 flow [2024-05-12 12:12:25,697 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 12:12:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:25,697 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 12:12:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 12:12:25,697 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:25,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1604405342, now seen corresponding path program 4 times [2024-05-12 12:12:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456029494] [2024-05-12 12:12:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:12:30,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456029494] [2024-05-12 12:12:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456029494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:30,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:30,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791640741] [2024-05-12 12:12:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:30,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:30,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:30,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:30,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 611 transitions, 14153 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 12:12:30,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:32,539 INFO L124 PetriNetUnfolderBase]: 2884/5034 cut-off events. [2024-05-12 12:12:32,540 INFO L125 PetriNetUnfolderBase]: For 185274/185287 co-relation queries the response was YES. [2024-05-12 12:12:32,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42326 conditions, 5034 events. 2884/5034 cut-off events. For 185274/185287 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33342 event pairs, 529 based on Foata normal form. 14/5043 useless extension candidates. Maximal degree in co-relation 42177. Up to 1940 conditions per place. [2024-05-12 12:12:32,599 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 424 selfloop transitions, 249 changer transitions 0/680 dead transitions. [2024-05-12 12:12:32,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 680 transitions, 16299 flow [2024-05-12 12:12:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:12:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:12:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-05-12 12:12:32,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 12:12:32,601 INFO L175 Difference]: Start difference. First operand has 335 places, 611 transitions, 14153 flow. Second operand 10 states and 195 transitions. [2024-05-12 12:12:32,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 680 transitions, 16299 flow [2024-05-12 12:12:33,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 680 transitions, 15823 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 12:12:33,395 INFO L231 Difference]: Finished difference. Result has 338 places, 611 transitions, 14188 flow [2024-05-12 12:12:33,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13677, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14188, PETRI_PLACES=338, PETRI_TRANSITIONS=611} [2024-05-12 12:12:33,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-05-12 12:12:33,396 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 611 transitions, 14188 flow [2024-05-12 12:12:33,397 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 12:12:33,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:33,397 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 12:12:33,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 12:12:33,397 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:33,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1487484896, now seen corresponding path program 4 times [2024-05-12 12:12:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48126941] [2024-05-12 12:12:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:37,830 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 12:12:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48126941] [2024-05-12 12:12:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48126941] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:37,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:12:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626597544] [2024-05-12 12:12:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:37,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:12:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:12:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:12:37,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:37,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 611 transitions, 14188 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 12:12:37,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:37,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:37,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:39,644 INFO L124 PetriNetUnfolderBase]: 2902/5079 cut-off events. [2024-05-12 12:12:39,644 INFO L125 PetriNetUnfolderBase]: For 187493/187498 co-relation queries the response was YES. [2024-05-12 12:12:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42417 conditions, 5079 events. 2902/5079 cut-off events. For 187493/187498 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 33783 event pairs, 461 based on Foata normal form. 2/5077 useless extension candidates. Maximal degree in co-relation 42267. Up to 2949 conditions per place. [2024-05-12 12:12:39,705 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 458 selfloop transitions, 177 changer transitions 0/642 dead transitions. [2024-05-12 12:12:39,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 642 transitions, 15800 flow [2024-05-12 12:12:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:12:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:12:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-05-12 12:12:39,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-05-12 12:12:39,707 INFO L175 Difference]: Start difference. First operand has 338 places, 611 transitions, 14188 flow. Second operand 8 states and 133 transitions. [2024-05-12 12:12:39,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 642 transitions, 15800 flow [2024-05-12 12:12:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 642 transitions, 15329 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 12:12:40,492 INFO L231 Difference]: Finished difference. Result has 338 places, 613 transitions, 14095 flow [2024-05-12 12:12:40,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13717, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14095, PETRI_PLACES=338, PETRI_TRANSITIONS=613} [2024-05-12 12:12:40,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-05-12 12:12:40,493 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 613 transitions, 14095 flow [2024-05-12 12:12:40,493 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 12:12:40,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:40,494 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 12:12:40,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 12:12:40,494 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:40,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1487394686, now seen corresponding path program 5 times [2024-05-12 12:12:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585061012] [2024-05-12 12:12:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:40,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:44,255 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 12:12:44,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:44,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585061012] [2024-05-12 12:12:44,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585061012] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:44,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:44,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:12:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889290860] [2024-05-12 12:12:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:12:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:12:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:12:44,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:44,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 613 transitions, 14095 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 12:12:44,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:44,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:46,072 INFO L124 PetriNetUnfolderBase]: 2956/5181 cut-off events. [2024-05-12 12:12:46,072 INFO L125 PetriNetUnfolderBase]: For 192462/192467 co-relation queries the response was YES. [2024-05-12 12:12:46,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42792 conditions, 5181 events. 2956/5181 cut-off events. For 192462/192467 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34712 event pairs, 876 based on Foata normal form. 2/5179 useless extension candidates. Maximal degree in co-relation 42641. Up to 4202 conditions per place. [2024-05-12 12:12:46,133 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 482 selfloop transitions, 169 changer transitions 0/658 dead transitions. [2024-05-12 12:12:46,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 658 transitions, 16136 flow [2024-05-12 12:12:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:12:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:12:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-05-12 12:12:46,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2024-05-12 12:12:46,135 INFO L175 Difference]: Start difference. First operand has 338 places, 613 transitions, 14095 flow. Second operand 9 states and 145 transitions. [2024-05-12 12:12:46,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 658 transitions, 16136 flow [2024-05-12 12:12:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 658 transitions, 15857 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-05-12 12:12:46,957 INFO L231 Difference]: Finished difference. Result has 345 places, 627 transitions, 14791 flow [2024-05-12 12:12:46,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13829, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14791, PETRI_PLACES=345, PETRI_TRANSITIONS=627} [2024-05-12 12:12:46,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-05-12 12:12:46,958 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 627 transitions, 14791 flow [2024-05-12 12:12:46,958 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 12:12:46,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:46,959 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 12:12:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 12:12:46,959 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:46,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1487398406, now seen corresponding path program 6 times [2024-05-12 12:12:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620207061] [2024-05-12 12:12:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:50,578 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 12:12:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620207061] [2024-05-12 12:12:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620207061] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:50,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:50,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:12:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024590049] [2024-05-12 12:12:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:12:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:12:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:12:50,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:50,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 627 transitions, 14791 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 12:12:50,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:50,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:50,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:12:52,626 INFO L124 PetriNetUnfolderBase]: 3033/5319 cut-off events. [2024-05-12 12:12:52,627 INFO L125 PetriNetUnfolderBase]: For 198515/198520 co-relation queries the response was YES. [2024-05-12 12:12:52,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44181 conditions, 5319 events. 3033/5319 cut-off events. For 198515/198520 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 35874 event pairs, 604 based on Foata normal form. 2/5316 useless extension candidates. Maximal degree in co-relation 44026. Up to 3738 conditions per place. [2024-05-12 12:12:52,687 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 459 selfloop transitions, 204 changer transitions 0/670 dead transitions. [2024-05-12 12:12:52,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 670 transitions, 16701 flow [2024-05-12 12:12:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:12:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:12:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:12:52,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-05-12 12:12:52,688 INFO L175 Difference]: Start difference. First operand has 345 places, 627 transitions, 14791 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:12:52,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 670 transitions, 16701 flow [2024-05-12 12:12:53,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 670 transitions, 16510 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 12:12:53,625 INFO L231 Difference]: Finished difference. Result has 348 places, 635 transitions, 15115 flow [2024-05-12 12:12:53,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14600, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15115, PETRI_PLACES=348, PETRI_TRANSITIONS=635} [2024-05-12 12:12:53,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-05-12 12:12:53,628 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 635 transitions, 15115 flow [2024-05-12 12:12:53,628 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 12:12:53,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:12:53,628 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 12:12:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 12:12:53,628 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:12:53,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:12:53,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1400552991, now seen corresponding path program 7 times [2024-05-12 12:12:53,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:12:53,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046137345] [2024-05-12 12:12:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:12:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:12:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:12:58,202 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 12:12:58,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:12:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046137345] [2024-05-12 12:12:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046137345] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:12:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:12:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:12:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217503452] [2024-05-12 12:12:58,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:12:58,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:12:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:12:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:12:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:12:58,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:12:58,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 635 transitions, 15115 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 12:12:58,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:12:58,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:12:58,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:00,249 INFO L124 PetriNetUnfolderBase]: 3047/5344 cut-off events. [2024-05-12 12:13:00,249 INFO L125 PetriNetUnfolderBase]: For 207993/207998 co-relation queries the response was YES. [2024-05-12 12:13:00,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44761 conditions, 5344 events. 3047/5344 cut-off events. For 207993/207998 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36133 event pairs, 710 based on Foata normal form. 1/5343 useless extension candidates. Maximal degree in co-relation 44605. Up to 4240 conditions per place. [2024-05-12 12:13:00,319 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 474 selfloop transitions, 194 changer transitions 0/675 dead transitions. [2024-05-12 12:13:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 675 transitions, 16891 flow [2024-05-12 12:13:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:13:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:13:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-05-12 12:13:00,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-05-12 12:13:00,320 INFO L175 Difference]: Start difference. First operand has 348 places, 635 transitions, 15115 flow. Second operand 9 states and 151 transitions. [2024-05-12 12:13:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 675 transitions, 16891 flow [2024-05-12 12:13:01,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 675 transitions, 16653 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 12:13:01,272 INFO L231 Difference]: Finished difference. Result has 355 places, 641 transitions, 15533 flow [2024-05-12 12:13:01,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14877, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15533, PETRI_PLACES=355, PETRI_TRANSITIONS=641} [2024-05-12 12:13:01,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-05-12 12:13:01,273 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 641 transitions, 15533 flow [2024-05-12 12:13:01,274 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 12:13:01,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:01,274 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 12:13:01,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 12:13:01,274 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:01,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1400558726, now seen corresponding path program 7 times [2024-05-12 12:13:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:01,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109184024] [2024-05-12 12:13:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:05,622 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 12:13:05,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:05,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109184024] [2024-05-12 12:13:05,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109184024] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:05,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:05,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:13:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137527227] [2024-05-12 12:13:05,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:05,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:13:05,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:13:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:13:05,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:05,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 641 transitions, 15533 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 12:13:05,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:05,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:05,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:07,712 INFO L124 PetriNetUnfolderBase]: 3091/5425 cut-off events. [2024-05-12 12:13:07,712 INFO L125 PetriNetUnfolderBase]: For 206632/206637 co-relation queries the response was YES. [2024-05-12 12:13:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46011 conditions, 5425 events. 3091/5425 cut-off events. For 206632/206637 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36887 event pairs, 711 based on Foata normal form. 2/5425 useless extension candidates. Maximal degree in co-relation 45851. Up to 4414 conditions per place. [2024-05-12 12:13:07,786 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 481 selfloop transitions, 185 changer transitions 0/673 dead transitions. [2024-05-12 12:13:07,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 673 transitions, 17185 flow [2024-05-12 12:13:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:13:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:13:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 12:13:07,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:13:07,787 INFO L175 Difference]: Start difference. First operand has 355 places, 641 transitions, 15533 flow. Second operand 8 states and 136 transitions. [2024-05-12 12:13:07,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 673 transitions, 17185 flow [2024-05-12 12:13:08,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 673 transitions, 16981 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 12:13:08,849 INFO L231 Difference]: Finished difference. Result has 358 places, 644 transitions, 15773 flow [2024-05-12 12:13:08,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15329, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15773, PETRI_PLACES=358, PETRI_TRANSITIONS=644} [2024-05-12 12:13:08,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-05-12 12:13:08,850 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 644 transitions, 15773 flow [2024-05-12 12:13:08,850 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 12:13:08,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:08,851 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 12:13:08,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 12:13:08,851 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:08,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1400558571, now seen corresponding path program 8 times [2024-05-12 12:13:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:08,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459891930] [2024-05-12 12:13:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:13,203 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 12:13:13,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459891930] [2024-05-12 12:13:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459891930] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:13,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:13,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:13:13,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777453509] [2024-05-12 12:13:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:13,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:13:13,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:13:13,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:13:13,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:13,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 644 transitions, 15773 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 12:13:13,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:13,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:13,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:15,177 INFO L124 PetriNetUnfolderBase]: 3089/5425 cut-off events. [2024-05-12 12:13:15,178 INFO L125 PetriNetUnfolderBase]: For 207730/207735 co-relation queries the response was YES. [2024-05-12 12:13:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46098 conditions, 5425 events. 3089/5425 cut-off events. For 207730/207735 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36837 event pairs, 721 based on Foata normal form. 1/5424 useless extension candidates. Maximal degree in co-relation 45938. Up to 4215 conditions per place. [2024-05-12 12:13:15,250 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 448 selfloop transitions, 224 changer transitions 0/679 dead transitions. [2024-05-12 12:13:15,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 679 transitions, 17538 flow [2024-05-12 12:13:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:13:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:13:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-05-12 12:13:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-05-12 12:13:15,251 INFO L175 Difference]: Start difference. First operand has 358 places, 644 transitions, 15773 flow. Second operand 8 states and 139 transitions. [2024-05-12 12:13:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 679 transitions, 17538 flow [2024-05-12 12:13:16,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 679 transitions, 17173 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 12:13:16,207 INFO L231 Difference]: Finished difference. Result has 359 places, 644 transitions, 15874 flow [2024-05-12 12:13:16,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15408, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15874, PETRI_PLACES=359, PETRI_TRANSITIONS=644} [2024-05-12 12:13:16,208 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-05-12 12:13:16,208 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 644 transitions, 15874 flow [2024-05-12 12:13:16,208 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 12:13:16,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:16,208 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 12:13:16,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 12:13:16,209 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:16,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1475023760, now seen corresponding path program 8 times [2024-05-12 12:13:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:16,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4609503] [2024-05-12 12:13:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:20,460 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 12:13:20,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4609503] [2024-05-12 12:13:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4609503] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:20,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:13:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738818400] [2024-05-12 12:13:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:20,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:13:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:13:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:13:20,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:20,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 644 transitions, 15874 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 12:13:20,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:20,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:20,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:22,691 INFO L124 PetriNetUnfolderBase]: 3116/5480 cut-off events. [2024-05-12 12:13:22,692 INFO L125 PetriNetUnfolderBase]: For 209922/209927 co-relation queries the response was YES. [2024-05-12 12:13:22,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46560 conditions, 5480 events. 3116/5480 cut-off events. For 209922/209927 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37517 event pairs, 481 based on Foata normal form. 2/5479 useless extension candidates. Maximal degree in co-relation 46400. Up to 3850 conditions per place. [2024-05-12 12:13:22,751 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 458 selfloop transitions, 221 changer transitions 0/686 dead transitions. [2024-05-12 12:13:22,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 686 transitions, 17830 flow [2024-05-12 12:13:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:13:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:13:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 12:13:22,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-05-12 12:13:22,753 INFO L175 Difference]: Start difference. First operand has 359 places, 644 transitions, 15874 flow. Second operand 8 states and 141 transitions. [2024-05-12 12:13:22,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 686 transitions, 17830 flow [2024-05-12 12:13:23,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 686 transitions, 17263 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 12:13:23,675 INFO L231 Difference]: Finished difference. Result has 359 places, 647 transitions, 15802 flow [2024-05-12 12:13:23,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15309, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15802, PETRI_PLACES=359, PETRI_TRANSITIONS=647} [2024-05-12 12:13:23,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-05-12 12:13:23,676 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 647 transitions, 15802 flow [2024-05-12 12:13:23,676 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 12:13:23,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:23,676 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 12:13:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 12:13:23,676 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:23,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 608003484, now seen corresponding path program 9 times [2024-05-12 12:13:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365849361] [2024-05-12 12:13:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:28,012 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 12:13:28,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:28,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365849361] [2024-05-12 12:13:28,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365849361] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:28,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:28,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:13:28,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069488452] [2024-05-12 12:13:28,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:28,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:13:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:13:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:13:28,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:28,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 647 transitions, 15802 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 12:13:28,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:28,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:28,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:30,015 INFO L124 PetriNetUnfolderBase]: 3143/5523 cut-off events. [2024-05-12 12:13:30,015 INFO L125 PetriNetUnfolderBase]: For 211886/211891 co-relation queries the response was YES. [2024-05-12 12:13:30,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46895 conditions, 5523 events. 3143/5523 cut-off events. For 211886/211891 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 37790 event pairs, 667 based on Foata normal form. 2/5522 useless extension candidates. Maximal degree in co-relation 46735. Up to 4266 conditions per place. [2024-05-12 12:13:30,086 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 454 selfloop transitions, 228 changer transitions 0/689 dead transitions. [2024-05-12 12:13:30,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 689 transitions, 17687 flow [2024-05-12 12:13:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:13:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:13:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-05-12 12:13:30,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 12:13:30,087 INFO L175 Difference]: Start difference. First operand has 359 places, 647 transitions, 15802 flow. Second operand 8 states and 140 transitions. [2024-05-12 12:13:30,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 689 transitions, 17687 flow [2024-05-12 12:13:31,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 689 transitions, 17034 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-05-12 12:13:31,081 INFO L231 Difference]: Finished difference. Result has 359 places, 650 transitions, 15669 flow [2024-05-12 12:13:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15161, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15669, PETRI_PLACES=359, PETRI_TRANSITIONS=650} [2024-05-12 12:13:31,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-05-12 12:13:31,082 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 650 transitions, 15669 flow [2024-05-12 12:13:31,083 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 12:13:31,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:31,083 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 12:13:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 12:13:31,083 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:31,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 608153586, now seen corresponding path program 5 times [2024-05-12 12:13:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441410248] [2024-05-12 12:13:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:35,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441410248] [2024-05-12 12:13:35,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441410248] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:35,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:13:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808892084] [2024-05-12 12:13:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:13:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:13:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:13:35,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:35,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 650 transitions, 15669 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 12:13:35,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:35,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:35,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:38,009 INFO L124 PetriNetUnfolderBase]: 3241/5691 cut-off events. [2024-05-12 12:13:38,010 INFO L125 PetriNetUnfolderBase]: For 217295/217300 co-relation queries the response was YES. [2024-05-12 12:13:38,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47287 conditions, 5691 events. 3241/5691 cut-off events. For 217295/217300 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39061 event pairs, 708 based on Foata normal form. 9/5696 useless extension candidates. Maximal degree in co-relation 47128. Up to 2422 conditions per place. [2024-05-12 12:13:38,086 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 428 selfloop transitions, 291 changer transitions 0/726 dead transitions. [2024-05-12 12:13:38,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 726 transitions, 18285 flow [2024-05-12 12:13:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:13:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:13:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-05-12 12:13:38,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-05-12 12:13:38,087 INFO L175 Difference]: Start difference. First operand has 359 places, 650 transitions, 15669 flow. Second operand 9 states and 176 transitions. [2024-05-12 12:13:38,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 726 transitions, 18285 flow [2024-05-12 12:13:39,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 726 transitions, 17819 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 12:13:39,057 INFO L231 Difference]: Finished difference. Result has 361 places, 656 transitions, 15902 flow [2024-05-12 12:13:39,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15207, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15902, PETRI_PLACES=361, PETRI_TRANSITIONS=656} [2024-05-12 12:13:39,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-05-12 12:13:39,058 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 656 transitions, 15902 flow [2024-05-12 12:13:39,058 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 12:13:39,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:39,059 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 12:13:39,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 12:13:39,059 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:39,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2121499752, now seen corresponding path program 10 times [2024-05-12 12:13:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869071633] [2024-05-12 12:13:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:39,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:13:43,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:43,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869071633] [2024-05-12 12:13:43,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869071633] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:43,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:43,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:13:43,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249314128] [2024-05-12 12:13:43,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:43,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:13:43,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:13:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:13:43,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:43,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 656 transitions, 15902 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 12:13:43,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:43,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:45,378 INFO L124 PetriNetUnfolderBase]: 3236/5693 cut-off events. [2024-05-12 12:13:45,378 INFO L125 PetriNetUnfolderBase]: For 209897/209902 co-relation queries the response was YES. [2024-05-12 12:13:45,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48034 conditions, 5693 events. 3236/5693 cut-off events. For 209897/209902 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 39201 event pairs, 520 based on Foata normal form. 2/5693 useless extension candidates. Maximal degree in co-relation 47875. Up to 4405 conditions per place. [2024-05-12 12:13:45,452 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 463 selfloop transitions, 222 changer transitions 0/692 dead transitions. [2024-05-12 12:13:45,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 692 transitions, 17630 flow [2024-05-12 12:13:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:13:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:13:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-05-12 12:13:45,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-05-12 12:13:45,453 INFO L175 Difference]: Start difference. First operand has 361 places, 656 transitions, 15902 flow. Second operand 8 states and 143 transitions. [2024-05-12 12:13:45,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 692 transitions, 17630 flow [2024-05-12 12:13:46,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 692 transitions, 17096 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-05-12 12:13:46,615 INFO L231 Difference]: Finished difference. Result has 363 places, 656 transitions, 15858 flow [2024-05-12 12:13:46,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15368, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15858, PETRI_PLACES=363, PETRI_TRANSITIONS=656} [2024-05-12 12:13:46,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-05-12 12:13:46,615 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 656 transitions, 15858 flow [2024-05-12 12:13:46,616 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 12:13:46,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:46,616 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 12:13:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 12:13:46,616 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:46,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:46,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2121494017, now seen corresponding path program 9 times [2024-05-12 12:13:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963100313] [2024-05-12 12:13:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:51,022 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 12:13:51,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:51,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963100313] [2024-05-12 12:13:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963100313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:13:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713755276] [2024-05-12 12:13:51,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:51,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:13:51,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:13:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:13:51,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:51,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 656 transitions, 15858 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 12:13:51,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:51,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:51,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:13:53,129 INFO L124 PetriNetUnfolderBase]: 3250/5714 cut-off events. [2024-05-12 12:13:53,129 INFO L125 PetriNetUnfolderBase]: For 205300/205305 co-relation queries the response was YES. [2024-05-12 12:13:53,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47636 conditions, 5714 events. 3250/5714 cut-off events. For 205300/205305 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39340 event pairs, 785 based on Foata normal form. 1/5713 useless extension candidates. Maximal degree in co-relation 47476. Up to 4576 conditions per place. [2024-05-12 12:13:53,203 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 483 selfloop transitions, 212 changer transitions 0/702 dead transitions. [2024-05-12 12:13:53,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 702 transitions, 17833 flow [2024-05-12 12:13:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:13:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:13:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 12:13:53,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-05-12 12:13:53,205 INFO L175 Difference]: Start difference. First operand has 363 places, 656 transitions, 15858 flow. Second operand 9 states and 154 transitions. [2024-05-12 12:13:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 702 transitions, 17833 flow [2024-05-12 12:13:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 702 transitions, 17337 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-05-12 12:13:54,227 INFO L231 Difference]: Finished difference. Result has 363 places, 660 transitions, 15875 flow [2024-05-12 12:13:54,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15362, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15875, PETRI_PLACES=363, PETRI_TRANSITIONS=660} [2024-05-12 12:13:54,228 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-05-12 12:13:54,228 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 660 transitions, 15875 flow [2024-05-12 12:13:54,228 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 12:13:54,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:13:54,228 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 12:13:54,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 12:13:54,229 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:13:54,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:13:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash 608147789, now seen corresponding path program 10 times [2024-05-12 12:13:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:13:54,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89261670] [2024-05-12 12:13:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:13:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:13:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:13:58,982 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 12:13:58,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:13:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89261670] [2024-05-12 12:13:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89261670] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:13:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:13:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:13:58,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94873441] [2024-05-12 12:13:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:13:58,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:13:58,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:13:58,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:13:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:13:59,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:13:59,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 660 transitions, 15875 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 12:13:59,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:13:59,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:13:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:01,029 INFO L124 PetriNetUnfolderBase]: 3264/5734 cut-off events. [2024-05-12 12:14:01,029 INFO L125 PetriNetUnfolderBase]: For 200940/200945 co-relation queries the response was YES. [2024-05-12 12:14:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47702 conditions, 5734 events. 3264/5734 cut-off events. For 200940/200945 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 39472 event pairs, 690 based on Foata normal form. 1/5733 useless extension candidates. Maximal degree in co-relation 47542. Up to 4316 conditions per place. [2024-05-12 12:14:01,105 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 432 selfloop transitions, 275 changer transitions 0/714 dead transitions. [2024-05-12 12:14:01,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 714 transitions, 18106 flow [2024-05-12 12:14:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-05-12 12:14:01,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:14:01,107 INFO L175 Difference]: Start difference. First operand has 363 places, 660 transitions, 15875 flow. Second operand 9 states and 162 transitions. [2024-05-12 12:14:01,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 714 transitions, 18106 flow [2024-05-12 12:14:02,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 714 transitions, 17692 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 12:14:02,287 INFO L231 Difference]: Finished difference. Result has 366 places, 664 transitions, 16107 flow [2024-05-12 12:14:02,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15463, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16107, PETRI_PLACES=366, PETRI_TRANSITIONS=664} [2024-05-12 12:14:02,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-05-12 12:14:02,289 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 664 transitions, 16107 flow [2024-05-12 12:14:02,290 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 12:14:02,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:02,290 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 12:14:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 12:14:02,290 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:02,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash 613515966, now seen corresponding path program 6 times [2024-05-12 12:14:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198625910] [2024-05-12 12:14:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:07,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198625910] [2024-05-12 12:14:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198625910] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434834668] [2024-05-12 12:14:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:07,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:07,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:07,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 664 transitions, 16107 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 12:14:07,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:07,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:07,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:09,593 INFO L124 PetriNetUnfolderBase]: 3471/6071 cut-off events. [2024-05-12 12:14:09,593 INFO L125 PetriNetUnfolderBase]: For 222899/222910 co-relation queries the response was YES. [2024-05-12 12:14:09,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50547 conditions, 6071 events. 3471/6071 cut-off events. For 222899/222910 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 41935 event pairs, 656 based on Foata normal form. 11/6077 useless extension candidates. Maximal degree in co-relation 50387. Up to 2485 conditions per place. [2024-05-12 12:14:09,672 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 417 selfloop transitions, 322 changer transitions 0/746 dead transitions. [2024-05-12 12:14:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 746 transitions, 18737 flow [2024-05-12 12:14:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-05-12 12:14:09,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 12:14:09,674 INFO L175 Difference]: Start difference. First operand has 366 places, 664 transitions, 16107 flow. Second operand 9 states and 174 transitions. [2024-05-12 12:14:09,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 746 transitions, 18737 flow [2024-05-12 12:14:10,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 746 transitions, 18143 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-05-12 12:14:10,738 INFO L231 Difference]: Finished difference. Result has 368 places, 676 transitions, 16407 flow [2024-05-12 12:14:10,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15517, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16407, PETRI_PLACES=368, PETRI_TRANSITIONS=676} [2024-05-12 12:14:10,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-05-12 12:14:10,739 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 676 transitions, 16407 flow [2024-05-12 12:14:10,740 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 12:14:10,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:10,740 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 12:14:10,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 12:14:10,740 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:10,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2115922170, now seen corresponding path program 7 times [2024-05-12 12:14:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571217101] [2024-05-12 12:14:10,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:10,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:15,599 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 12:14:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571217101] [2024-05-12 12:14:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571217101] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:15,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:15,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579128781] [2024-05-12 12:14:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:15,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:15,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:15,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 676 transitions, 16407 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 12:14:15,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:15,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:15,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:18,035 INFO L124 PetriNetUnfolderBase]: 3522/6161 cut-off events. [2024-05-12 12:14:18,035 INFO L125 PetriNetUnfolderBase]: For 228471/228484 co-relation queries the response was YES. [2024-05-12 12:14:18,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52326 conditions, 6161 events. 3522/6161 cut-off events. For 228471/228484 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 42701 event pairs, 644 based on Foata normal form. 14/6170 useless extension candidates. Maximal degree in co-relation 52165. Up to 2501 conditions per place. [2024-05-12 12:14:18,115 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 358 selfloop transitions, 375 changer transitions 0/740 dead transitions. [2024-05-12 12:14:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 740 transitions, 18790 flow [2024-05-12 12:14:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-05-12 12:14:18,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:14:18,116 INFO L175 Difference]: Start difference. First operand has 368 places, 676 transitions, 16407 flow. Second operand 9 states and 171 transitions. [2024-05-12 12:14:18,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 740 transitions, 18790 flow [2024-05-12 12:14:19,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 740 transitions, 18414 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 12:14:19,263 INFO L231 Difference]: Finished difference. Result has 372 places, 681 transitions, 16887 flow [2024-05-12 12:14:19,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16038, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16887, PETRI_PLACES=372, PETRI_TRANSITIONS=681} [2024-05-12 12:14:19,264 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-05-12 12:14:19,264 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 681 transitions, 16887 flow [2024-05-12 12:14:19,265 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 12:14:19,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:19,265 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 12:14:19,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 12:14:19,265 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:19,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 613515749, now seen corresponding path program 11 times [2024-05-12 12:14:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:19,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649385692] [2024-05-12 12:14:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:24,111 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 12:14:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649385692] [2024-05-12 12:14:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649385692] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642074472] [2024-05-12 12:14:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:24,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:24,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 681 transitions, 16887 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 12:14:24,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:24,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:26,421 INFO L124 PetriNetUnfolderBase]: 3538/6206 cut-off events. [2024-05-12 12:14:26,422 INFO L125 PetriNetUnfolderBase]: For 232495/232504 co-relation queries the response was YES. [2024-05-12 12:14:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53165 conditions, 6206 events. 3538/6206 cut-off events. For 232495/232504 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 43152 event pairs, 778 based on Foata normal form. 2/6206 useless extension candidates. Maximal degree in co-relation 53003. Up to 5005 conditions per place. [2024-05-12 12:14:26,506 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 523 selfloop transitions, 197 changer transitions 0/727 dead transitions. [2024-05-12 12:14:26,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 727 transitions, 18920 flow [2024-05-12 12:14:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-05-12 12:14:26,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-05-12 12:14:26,507 INFO L175 Difference]: Start difference. First operand has 372 places, 681 transitions, 16887 flow. Second operand 9 states and 151 transitions. [2024-05-12 12:14:26,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 727 transitions, 18920 flow [2024-05-12 12:14:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 727 transitions, 18223 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 12:14:27,744 INFO L231 Difference]: Finished difference. Result has 374 places, 687 transitions, 16730 flow [2024-05-12 12:14:27,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16196, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16730, PETRI_PLACES=374, PETRI_TRANSITIONS=687} [2024-05-12 12:14:27,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-05-12 12:14:27,745 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 687 transitions, 16730 flow [2024-05-12 12:14:27,745 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 12:14:27,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:27,745 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 12:14:27,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 12:14:27,745 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:27,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2115929827, now seen corresponding path program 12 times [2024-05-12 12:14:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318505308] [2024-05-12 12:14:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318505308] [2024-05-12 12:14:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318505308] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:32,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:32,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087515122] [2024-05-12 12:14:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:32,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:32,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:32,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 687 transitions, 16730 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 12:14:32,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:32,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:32,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:34,717 INFO L124 PetriNetUnfolderBase]: 3557/6232 cut-off events. [2024-05-12 12:14:34,717 INFO L125 PetriNetUnfolderBase]: For 227349/227358 co-relation queries the response was YES. [2024-05-12 12:14:34,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51940 conditions, 6232 events. 3557/6232 cut-off events. For 227349/227358 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 43388 event pairs, 774 based on Foata normal form. 2/6232 useless extension candidates. Maximal degree in co-relation 51778. Up to 5035 conditions per place. [2024-05-12 12:14:34,798 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 505 selfloop transitions, 215 changer transitions 0/727 dead transitions. [2024-05-12 12:14:34,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 727 transitions, 18649 flow [2024-05-12 12:14:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 12:14:34,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-05-12 12:14:34,799 INFO L175 Difference]: Start difference. First operand has 374 places, 687 transitions, 16730 flow. Second operand 9 states and 150 transitions. [2024-05-12 12:14:34,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 727 transitions, 18649 flow [2024-05-12 12:14:36,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 727 transitions, 18078 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 12:14:36,047 INFO L231 Difference]: Finished difference. Result has 376 places, 693 transitions, 16741 flow [2024-05-12 12:14:36,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16169, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16741, PETRI_PLACES=376, PETRI_TRANSITIONS=693} [2024-05-12 12:14:36,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-05-12 12:14:36,048 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 693 transitions, 16741 flow [2024-05-12 12:14:36,049 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 12:14:36,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:36,049 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 12:14:36,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 12:14:36,049 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash 613717776, now seen corresponding path program 8 times [2024-05-12 12:14:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:36,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669253861] [2024-05-12 12:14:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:36,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:42,529 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 12:14:42,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669253861] [2024-05-12 12:14:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669253861] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:42,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277316170] [2024-05-12 12:14:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:42,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:42,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:42,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:42,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:42,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 693 transitions, 16741 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 12:14:42,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:42,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:42,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:45,004 INFO L124 PetriNetUnfolderBase]: 3556/6218 cut-off events. [2024-05-12 12:14:45,005 INFO L125 PetriNetUnfolderBase]: For 220969/220982 co-relation queries the response was YES. [2024-05-12 12:14:45,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51697 conditions, 6218 events. 3556/6218 cut-off events. For 220969/220982 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 43105 event pairs, 684 based on Foata normal form. 13/6228 useless extension candidates. Maximal degree in co-relation 51534. Up to 3970 conditions per place. [2024-05-12 12:14:45,277 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 511 selfloop transitions, 249 changer transitions 0/767 dead transitions. [2024-05-12 12:14:45,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 767 transitions, 19129 flow [2024-05-12 12:14:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-05-12 12:14:45,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-05-12 12:14:45,279 INFO L175 Difference]: Start difference. First operand has 376 places, 693 transitions, 16741 flow. Second operand 9 states and 170 transitions. [2024-05-12 12:14:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 767 transitions, 19129 flow [2024-05-12 12:14:46,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 767 transitions, 18724 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-05-12 12:14:46,436 INFO L231 Difference]: Finished difference. Result has 381 places, 708 transitions, 17248 flow [2024-05-12 12:14:46,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16338, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17248, PETRI_PLACES=381, PETRI_TRANSITIONS=708} [2024-05-12 12:14:46,437 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-05-12 12:14:46,437 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 708 transitions, 17248 flow [2024-05-12 12:14:46,437 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 12:14:46,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:46,437 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 12:14:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 12:14:46,438 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:46,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 478455159, now seen corresponding path program 13 times [2024-05-12 12:14:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881668149] [2024-05-12 12:14:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881668149] [2024-05-12 12:14:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881668149] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:50,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734166223] [2024-05-12 12:14:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:51,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 708 transitions, 17248 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 12:14:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:14:53,361 INFO L124 PetriNetUnfolderBase]: 3572/6261 cut-off events. [2024-05-12 12:14:53,361 INFO L125 PetriNetUnfolderBase]: For 226906/226915 co-relation queries the response was YES. [2024-05-12 12:14:53,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53203 conditions, 6261 events. 3572/6261 cut-off events. For 226906/226915 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 43652 event pairs, 1097 based on Foata normal form. 2/6259 useless extension candidates. Maximal degree in co-relation 53037. Up to 5617 conditions per place. [2024-05-12 12:14:53,447 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 682 selfloop transitions, 58 changer transitions 0/747 dead transitions. [2024-05-12 12:14:53,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 747 transitions, 19249 flow [2024-05-12 12:14:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:14:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:14:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 12:14:53,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-05-12 12:14:53,449 INFO L175 Difference]: Start difference. First operand has 381 places, 708 transitions, 17248 flow. Second operand 9 states and 143 transitions. [2024-05-12 12:14:53,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 747 transitions, 19249 flow [2024-05-12 12:14:54,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 747 transitions, 18748 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 12:14:54,503 INFO L231 Difference]: Finished difference. Result has 382 places, 714 transitions, 17010 flow [2024-05-12 12:14:54,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16747, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17010, PETRI_PLACES=382, PETRI_TRANSITIONS=714} [2024-05-12 12:14:54,504 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-05-12 12:14:54,504 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 714 transitions, 17010 flow [2024-05-12 12:14:54,504 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 12:14:54,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:14:54,504 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 12:14:54,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 12:14:54,504 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:14:54,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:14:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash -351457078, now seen corresponding path program 9 times [2024-05-12 12:14:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:14:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935435901] [2024-05-12 12:14:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:14:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:14:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:14:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:14:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:14:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935435901] [2024-05-12 12:14:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935435901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:14:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:14:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:14:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685180150] [2024-05-12 12:14:59,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:14:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:14:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:14:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:14:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:14:59,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:14:59,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 714 transitions, 17010 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 12:14:59,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:14:59,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:14:59,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:01,973 INFO L124 PetriNetUnfolderBase]: 3730/6536 cut-off events. [2024-05-12 12:15:01,973 INFO L125 PetriNetUnfolderBase]: For 226721/226730 co-relation queries the response was YES. [2024-05-12 12:15:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53659 conditions, 6536 events. 3730/6536 cut-off events. For 226721/226730 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 45812 event pairs, 1088 based on Foata normal form. 5/6536 useless extension candidates. Maximal degree in co-relation 53493. Up to 5415 conditions per place. [2024-05-12 12:15:02,052 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 694 selfloop transitions, 92 changer transitions 0/793 dead transitions. [2024-05-12 12:15:02,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 793 transitions, 19605 flow [2024-05-12 12:15:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:15:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:15:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 12:15:02,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 12:15:02,053 INFO L175 Difference]: Start difference. First operand has 382 places, 714 transitions, 17010 flow. Second operand 9 states and 163 transitions. [2024-05-12 12:15:02,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 793 transitions, 19605 flow [2024-05-12 12:15:03,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 793 transitions, 19461 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 12:15:03,113 INFO L231 Difference]: Finished difference. Result has 388 places, 739 transitions, 17523 flow [2024-05-12 12:15:03,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16866, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17523, PETRI_PLACES=388, PETRI_TRANSITIONS=739} [2024-05-12 12:15:03,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-05-12 12:15:03,115 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 739 transitions, 17523 flow [2024-05-12 12:15:03,115 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 12:15:03,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:03,115 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 12:15:03,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 12:15:03,115 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:03,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -67049345, now seen corresponding path program 14 times [2024-05-12 12:15:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918892040] [2024-05-12 12:15:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:08,072 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 12:15:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918892040] [2024-05-12 12:15:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918892040] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:08,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:08,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:08,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126804705] [2024-05-12 12:15:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:08,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:08,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 739 transitions, 17523 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 12:15:08,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:08,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:08,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:10,570 INFO L124 PetriNetUnfolderBase]: 3749/6567 cut-off events. [2024-05-12 12:15:10,571 INFO L125 PetriNetUnfolderBase]: For 231792/231802 co-relation queries the response was YES. [2024-05-12 12:15:10,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55120 conditions, 6567 events. 3749/6567 cut-off events. For 231792/231802 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 46087 event pairs, 1117 based on Foata normal form. 2/6565 useless extension candidates. Maximal degree in co-relation 54950. Up to 5931 conditions per place. [2024-05-12 12:15:10,659 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 726 selfloop transitions, 43 changer transitions 0/776 dead transitions. [2024-05-12 12:15:10,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 776 transitions, 19538 flow [2024-05-12 12:15:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 12:15:10,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2024-05-12 12:15:10,661 INFO L175 Difference]: Start difference. First operand has 388 places, 739 transitions, 17523 flow. Second operand 10 states and 151 transitions. [2024-05-12 12:15:10,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 776 transitions, 19538 flow [2024-05-12 12:15:11,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 776 transitions, 19492 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-05-12 12:15:11,850 INFO L231 Difference]: Finished difference. Result has 398 places, 751 transitions, 17866 flow [2024-05-12 12:15:11,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17477, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17866, PETRI_PLACES=398, PETRI_TRANSITIONS=751} [2024-05-12 12:15:11,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-05-12 12:15:11,851 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 751 transitions, 17866 flow [2024-05-12 12:15:11,851 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 12:15:11,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:11,851 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 12:15:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 12:15:11,851 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:11,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -56951188, now seen corresponding path program 10 times [2024-05-12 12:15:11,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:11,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749049027] [2024-05-12 12:15:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:16,274 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 12:15:16,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749049027] [2024-05-12 12:15:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749049027] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:16,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:16,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221060942] [2024-05-12 12:15:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:16,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:16,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:16,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:16,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 751 transitions, 17866 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 12:15:16,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:16,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:18,879 INFO L124 PetriNetUnfolderBase]: 3871/6772 cut-off events. [2024-05-12 12:15:18,880 INFO L125 PetriNetUnfolderBase]: For 240969/240980 co-relation queries the response was YES. [2024-05-12 12:15:18,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56561 conditions, 6772 events. 3871/6772 cut-off events. For 240969/240980 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 47682 event pairs, 1117 based on Foata normal form. 7/6774 useless extension candidates. Maximal degree in co-relation 56386. Up to 5953 conditions per place. [2024-05-12 12:15:18,963 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 736 selfloop transitions, 56 changer transitions 0/799 dead transitions. [2024-05-12 12:15:18,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 799 transitions, 19902 flow [2024-05-12 12:15:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:15:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:15:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 12:15:18,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-05-12 12:15:18,964 INFO L175 Difference]: Start difference. First operand has 398 places, 751 transitions, 17866 flow. Second operand 10 states and 162 transitions. [2024-05-12 12:15:18,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 799 transitions, 19902 flow [2024-05-12 12:15:20,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 799 transitions, 19773 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-05-12 12:15:20,210 INFO L231 Difference]: Finished difference. Result has 403 places, 763 transitions, 18087 flow [2024-05-12 12:15:20,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17737, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18087, PETRI_PLACES=403, PETRI_TRANSITIONS=763} [2024-05-12 12:15:20,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-05-12 12:15:20,211 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 763 transitions, 18087 flow [2024-05-12 12:15:20,211 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 12:15:20,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:20,211 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 12:15:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 12:15:20,212 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:20,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash -67041688, now seen corresponding path program 11 times [2024-05-12 12:15:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:20,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016348342] [2024-05-12 12:15:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:24,557 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 12:15:24,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016348342] [2024-05-12 12:15:24,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016348342] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:24,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:24,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442953122] [2024-05-12 12:15:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:24,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:24,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 763 transitions, 18087 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 12:15:24,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:24,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:24,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:27,508 INFO L124 PetriNetUnfolderBase]: 4074/7119 cut-off events. [2024-05-12 12:15:27,508 INFO L125 PetriNetUnfolderBase]: For 255328/255341 co-relation queries the response was YES. [2024-05-12 12:15:27,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59838 conditions, 7119 events. 4074/7119 cut-off events. For 255328/255341 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 50454 event pairs, 1145 based on Foata normal form. 6/7120 useless extension candidates. Maximal degree in co-relation 59661. Up to 5998 conditions per place. [2024-05-12 12:15:27,617 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 739 selfloop transitions, 87 changer transitions 0/833 dead transitions. [2024-05-12 12:15:27,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 833 transitions, 20623 flow [2024-05-12 12:15:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:15:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:15:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 12:15:27,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 12:15:27,618 INFO L175 Difference]: Start difference. First operand has 403 places, 763 transitions, 18087 flow. Second operand 11 states and 184 transitions. [2024-05-12 12:15:27,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 833 transitions, 20623 flow [2024-05-12 12:15:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 833 transitions, 20436 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-05-12 12:15:29,417 INFO L231 Difference]: Finished difference. Result has 406 places, 783 transitions, 18510 flow [2024-05-12 12:15:29,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17900, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18510, PETRI_PLACES=406, PETRI_TRANSITIONS=783} [2024-05-12 12:15:29,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-05-12 12:15:29,418 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 783 transitions, 18510 flow [2024-05-12 12:15:29,418 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 12:15:29,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:29,418 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 12:15:29,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 12:15:29,418 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:29,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash -67049128, now seen corresponding path program 12 times [2024-05-12 12:15:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:29,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712303963] [2024-05-12 12:15:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:29,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:15:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712303963] [2024-05-12 12:15:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712303963] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:33,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:33,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:33,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135577128] [2024-05-12 12:15:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:33,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:33,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:33,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 783 transitions, 18510 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 12:15:33,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:33,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:36,633 INFO L124 PetriNetUnfolderBase]: 4070/7117 cut-off events. [2024-05-12 12:15:36,633 INFO L125 PetriNetUnfolderBase]: For 250575/250588 co-relation queries the response was YES. [2024-05-12 12:15:36,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59826 conditions, 7117 events. 4070/7117 cut-off events. For 250575/250588 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 50456 event pairs, 1125 based on Foata normal form. 7/7119 useless extension candidates. Maximal degree in co-relation 59648. Up to 6021 conditions per place. [2024-05-12 12:15:36,744 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 738 selfloop transitions, 82 changer transitions 0/827 dead transitions. [2024-05-12 12:15:36,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 827 transitions, 20538 flow [2024-05-12 12:15:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:15:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:15:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 12:15:36,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 12:15:36,746 INFO L175 Difference]: Start difference. First operand has 406 places, 783 transitions, 18510 flow. Second operand 9 states and 159 transitions. [2024-05-12 12:15:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 827 transitions, 20538 flow [2024-05-12 12:15:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 827 transitions, 20351 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-05-12 12:15:38,273 INFO L231 Difference]: Finished difference. Result has 409 places, 783 transitions, 18498 flow [2024-05-12 12:15:38,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18323, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18498, PETRI_PLACES=409, PETRI_TRANSITIONS=783} [2024-05-12 12:15:38,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-05-12 12:15:38,274 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 783 transitions, 18498 flow [2024-05-12 12:15:38,274 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 12:15:38,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:38,274 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 12:15:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 12:15:38,275 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:38,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -351247828, now seen corresponding path program 13 times [2024-05-12 12:15:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507051545] [2024-05-12 12:15:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:42,967 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 12:15:42,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:42,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507051545] [2024-05-12 12:15:42,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507051545] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:42,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:42,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:42,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129392963] [2024-05-12 12:15:42,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:42,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:42,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:42,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:42,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:43,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:43,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 783 transitions, 18498 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 12:15:43,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:43,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:43,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:45,721 INFO L124 PetriNetUnfolderBase]: 4121/7207 cut-off events. [2024-05-12 12:15:45,721 INFO L125 PetriNetUnfolderBase]: For 250329/250342 co-relation queries the response was YES. [2024-05-12 12:15:45,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60194 conditions, 7207 events. 4121/7207 cut-off events. For 250329/250342 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 51167 event pairs, 1161 based on Foata normal form. 6/7208 useless extension candidates. Maximal degree in co-relation 60014. Up to 6161 conditions per place. [2024-05-12 12:15:45,812 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 739 selfloop transitions, 82 changer transitions 0/828 dead transitions. [2024-05-12 12:15:45,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 828 transitions, 20736 flow [2024-05-12 12:15:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:15:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:15:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 12:15:45,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-05-12 12:15:45,813 INFO L175 Difference]: Start difference. First operand has 409 places, 783 transitions, 18498 flow. Second operand 9 states and 155 transitions. [2024-05-12 12:15:45,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 828 transitions, 20736 flow [2024-05-12 12:15:47,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 828 transitions, 20563 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 12:15:47,234 INFO L231 Difference]: Finished difference. Result has 410 places, 788 transitions, 18605 flow [2024-05-12 12:15:47,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18325, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18605, PETRI_PLACES=410, PETRI_TRANSITIONS=788} [2024-05-12 12:15:47,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-05-12 12:15:47,236 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 788 transitions, 18605 flow [2024-05-12 12:15:47,236 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 12:15:47,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:47,236 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 12:15:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 12:15:47,236 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:47,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash -351255268, now seen corresponding path program 14 times [2024-05-12 12:15:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:47,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829219931] [2024-05-12 12:15:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:15:52,000 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 12:15:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:15:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829219931] [2024-05-12 12:15:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829219931] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:15:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:15:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:15:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730210112] [2024-05-12 12:15:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:15:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:15:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:15:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:15:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:15:52,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:15:52,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 788 transitions, 18605 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 12:15:52,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:15:52,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:15:52,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:15:54,949 INFO L124 PetriNetUnfolderBase]: 4117/7204 cut-off events. [2024-05-12 12:15:54,949 INFO L125 PetriNetUnfolderBase]: For 244887/244900 co-relation queries the response was YES. [2024-05-12 12:15:55,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60018 conditions, 7204 events. 4117/7204 cut-off events. For 244887/244900 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 51149 event pairs, 1164 based on Foata normal form. 5/7204 useless extension candidates. Maximal degree in co-relation 59837. Up to 6158 conditions per place. [2024-05-12 12:15:55,069 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 749 selfloop transitions, 77 changer transitions 0/833 dead transitions. [2024-05-12 12:15:55,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 833 transitions, 20687 flow [2024-05-12 12:15:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:15:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:15:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 12:15:55,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 12:15:55,070 INFO L175 Difference]: Start difference. First operand has 410 places, 788 transitions, 18605 flow. Second operand 9 states and 158 transitions. [2024-05-12 12:15:55,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 833 transitions, 20687 flow [2024-05-12 12:15:56,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 833 transitions, 20363 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-05-12 12:15:56,774 INFO L231 Difference]: Finished difference. Result has 412 places, 788 transitions, 18446 flow [2024-05-12 12:15:56,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18281, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18446, PETRI_PLACES=412, PETRI_TRANSITIONS=788} [2024-05-12 12:15:56,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-05-12 12:15:56,775 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 788 transitions, 18446 flow [2024-05-12 12:15:56,775 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 12:15:56,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:15:56,775 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 12:15:56,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 12:15:56,776 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:15:56,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:15:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash -351255485, now seen corresponding path program 15 times [2024-05-12 12:15:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:15:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244125204] [2024-05-12 12:15:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:15:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:15:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244125204] [2024-05-12 12:16:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244125204] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:16:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954369216] [2024-05-12 12:16:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:16:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:16:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:16:01,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:01,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 788 transitions, 18446 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 12:16:01,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:01,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:01,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:04,188 INFO L124 PetriNetUnfolderBase]: 4113/7202 cut-off events. [2024-05-12 12:16:04,188 INFO L125 PetriNetUnfolderBase]: For 235388/235402 co-relation queries the response was YES. [2024-05-12 12:16:04,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58589 conditions, 7202 events. 4113/7202 cut-off events. For 235388/235402 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 51247 event pairs, 1185 based on Foata normal form. 2/7200 useless extension candidates. Maximal degree in co-relation 58408. Up to 6424 conditions per place. [2024-05-12 12:16:04,293 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 748 selfloop transitions, 62 changer transitions 0/817 dead transitions. [2024-05-12 12:16:04,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 817 transitions, 20394 flow [2024-05-12 12:16:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:16:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:16:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 12:16:04,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-05-12 12:16:04,295 INFO L175 Difference]: Start difference. First operand has 412 places, 788 transitions, 18446 flow. Second operand 9 states and 143 transitions. [2024-05-12 12:16:04,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 817 transitions, 20394 flow [2024-05-12 12:16:05,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 817 transitions, 20208 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 12:16:05,668 INFO L231 Difference]: Finished difference. Result has 413 places, 790 transitions, 18450 flow [2024-05-12 12:16:05,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18266, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18450, PETRI_PLACES=413, PETRI_TRANSITIONS=790} [2024-05-12 12:16:05,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-05-12 12:16:05,669 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 790 transitions, 18450 flow [2024-05-12 12:16:05,669 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 12:16:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:05,670 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 12:16:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 12:16:05,670 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:05,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 796803624, now seen corresponding path program 1 times [2024-05-12 12:16:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987020711] [2024-05-12 12:16:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987020711] [2024-05-12 12:16:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987020711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:16:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034320724] [2024-05-12 12:16:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:16:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:16:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:16:10,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:10,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 790 transitions, 18450 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 12:16:10,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:10,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:10,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:13,609 INFO L124 PetriNetUnfolderBase]: 4237/7405 cut-off events. [2024-05-12 12:16:13,609 INFO L125 PetriNetUnfolderBase]: For 247614/247628 co-relation queries the response was YES. [2024-05-12 12:16:13,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60065 conditions, 7405 events. 4237/7405 cut-off events. For 247614/247628 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 52853 event pairs, 770 based on Foata normal form. 3/7404 useless extension candidates. Maximal degree in co-relation 59883. Up to 4630 conditions per place. [2024-05-12 12:16:13,709 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 633 selfloop transitions, 236 changer transitions 0/876 dead transitions. [2024-05-12 12:16:13,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 876 transitions, 21410 flow [2024-05-12 12:16:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 12:16:13,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 12:16:13,715 INFO L175 Difference]: Start difference. First operand has 413 places, 790 transitions, 18450 flow. Second operand 11 states and 187 transitions. [2024-05-12 12:16:13,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 876 transitions, 21410 flow [2024-05-12 12:16:15,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 876 transitions, 21195 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-05-12 12:16:15,179 INFO L231 Difference]: Finished difference. Result has 419 places, 821 transitions, 19429 flow [2024-05-12 12:16:15,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18268, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19429, PETRI_PLACES=419, PETRI_TRANSITIONS=821} [2024-05-12 12:16:15,180 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-05-12 12:16:15,180 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 821 transitions, 19429 flow [2024-05-12 12:16:15,180 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 12:16:15,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:15,180 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 12:16:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 12:16:15,181 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:15,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 855016044, now seen corresponding path program 2 times [2024-05-12 12:16:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279638443] [2024-05-12 12:16:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:15,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:16:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279638443] [2024-05-12 12:16:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279638443] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:20,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:20,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:16:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857257265] [2024-05-12 12:16:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:20,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:16:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:16:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:16:20,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:20,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 821 transitions, 19429 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 12:16:20,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:20,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:20,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:23,340 INFO L124 PetriNetUnfolderBase]: 4361/7612 cut-off events. [2024-05-12 12:16:23,340 INFO L125 PetriNetUnfolderBase]: For 261622/261636 co-relation queries the response was YES. [2024-05-12 12:16:23,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63050 conditions, 7612 events. 4361/7612 cut-off events. For 261622/261636 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 54431 event pairs, 891 based on Foata normal form. 3/7613 useless extension candidates. Maximal degree in co-relation 62865. Up to 5837 conditions per place. [2024-05-12 12:16:23,430 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 636 selfloop transitions, 267 changer transitions 0/910 dead transitions. [2024-05-12 12:16:23,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 910 transitions, 22626 flow [2024-05-12 12:16:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 12:16:23,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-05-12 12:16:23,431 INFO L175 Difference]: Start difference. First operand has 419 places, 821 transitions, 19429 flow. Second operand 11 states and 185 transitions. [2024-05-12 12:16:23,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 910 transitions, 22626 flow [2024-05-12 12:16:24,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 910 transitions, 22417 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 12:16:24,911 INFO L231 Difference]: Finished difference. Result has 427 places, 856 transitions, 20736 flow [2024-05-12 12:16:24,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19234, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20736, PETRI_PLACES=427, PETRI_TRANSITIONS=856} [2024-05-12 12:16:24,911 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-05-12 12:16:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 856 transitions, 20736 flow [2024-05-12 12:16:24,912 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 12:16:24,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:24,912 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 12:16:24,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 12:16:24,912 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:24,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 128742922, now seen corresponding path program 3 times [2024-05-12 12:16:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533991696] [2024-05-12 12:16:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:29,452 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 12:16:29,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533991696] [2024-05-12 12:16:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533991696] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:29,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:16:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367197434] [2024-05-12 12:16:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:16:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:16:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:16:29,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 856 transitions, 20736 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 12:16:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:29,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:29,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:32,632 INFO L124 PetriNetUnfolderBase]: 4390/7662 cut-off events. [2024-05-12 12:16:32,632 INFO L125 PetriNetUnfolderBase]: For 271386/271400 co-relation queries the response was YES. [2024-05-12 12:16:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64720 conditions, 7662 events. 4390/7662 cut-off events. For 271386/271400 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54870 event pairs, 855 based on Foata normal form. 3/7660 useless extension candidates. Maximal degree in co-relation 64531. Up to 5388 conditions per place. [2024-05-12 12:16:32,751 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 574 selfloop transitions, 317 changer transitions 0/898 dead transitions. [2024-05-12 12:16:32,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 898 transitions, 22986 flow [2024-05-12 12:16:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:16:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:16:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 12:16:32,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 12:16:32,753 INFO L175 Difference]: Start difference. First operand has 427 places, 856 transitions, 20736 flow. Second operand 10 states and 178 transitions. [2024-05-12 12:16:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 898 transitions, 22986 flow [2024-05-12 12:16:34,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 898 transitions, 22783 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 12:16:34,400 INFO L231 Difference]: Finished difference. Result has 431 places, 858 transitions, 21193 flow [2024-05-12 12:16:34,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20533, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21193, PETRI_PLACES=431, PETRI_TRANSITIONS=858} [2024-05-12 12:16:34,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-05-12 12:16:34,401 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 858 transitions, 21193 flow [2024-05-12 12:16:34,401 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 12:16:34,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:34,401 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 12:16:34,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 12:16:34,401 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:34,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash 854896074, now seen corresponding path program 4 times [2024-05-12 12:16:34,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:34,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225299614] [2024-05-12 12:16:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:34,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:38,782 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 12:16:38,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:38,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225299614] [2024-05-12 12:16:38,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225299614] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:38,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:38,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:16:38,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058904909] [2024-05-12 12:16:38,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:38,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:16:38,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:38,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:16:38,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:16:38,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:38,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 858 transitions, 21193 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 12:16:38,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:38,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:38,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:41,969 INFO L124 PetriNetUnfolderBase]: 4419/7713 cut-off events. [2024-05-12 12:16:41,969 INFO L125 PetriNetUnfolderBase]: For 284116/284130 co-relation queries the response was YES. [2024-05-12 12:16:42,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66182 conditions, 7713 events. 4419/7713 cut-off events. For 284116/284130 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 55389 event pairs, 845 based on Foata normal form. 3/7711 useless extension candidates. Maximal degree in co-relation 65992. Up to 5176 conditions per place. [2024-05-12 12:16:42,080 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 593 selfloop transitions, 301 changer transitions 0/901 dead transitions. [2024-05-12 12:16:42,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 901 transitions, 23460 flow [2024-05-12 12:16:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:16:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:16:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 12:16:42,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-05-12 12:16:42,082 INFO L175 Difference]: Start difference. First operand has 431 places, 858 transitions, 21193 flow. Second operand 10 states and 176 transitions. [2024-05-12 12:16:42,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 901 transitions, 23460 flow [2024-05-12 12:16:43,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 901 transitions, 23266 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 12:16:43,762 INFO L231 Difference]: Finished difference. Result has 437 places, 861 transitions, 21682 flow [2024-05-12 12:16:43,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20999, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21682, PETRI_PLACES=437, PETRI_TRANSITIONS=861} [2024-05-12 12:16:43,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-05-12 12:16:43,763 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 861 transitions, 21682 flow [2024-05-12 12:16:43,763 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 12:16:43,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:43,763 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 12:16:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 12:16:43,763 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:43,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash 435275274, now seen corresponding path program 1 times [2024-05-12 12:16:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:43,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746967937] [2024-05-12 12:16:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:43,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:16:49,251 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 12:16:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:16:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746967937] [2024-05-12 12:16:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746967937] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:16:49,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:16:49,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:16:49,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295273664] [2024-05-12 12:16:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:16:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:16:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:16:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:16:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:16:49,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:16:49,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 861 transitions, 21682 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 12:16:49,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:16:49,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:16:49,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:16:52,829 INFO L124 PetriNetUnfolderBase]: 4540/7903 cut-off events. [2024-05-12 12:16:52,829 INFO L125 PetriNetUnfolderBase]: For 299489/299506 co-relation queries the response was YES. [2024-05-12 12:16:52,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68652 conditions, 7903 events. 4540/7903 cut-off events. For 299489/299506 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 56803 event pairs, 775 based on Foata normal form. 11/7911 useless extension candidates. Maximal degree in co-relation 68459. Up to 5357 conditions per place. [2024-05-12 12:16:52,949 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 743 selfloop transitions, 264 changer transitions 0/1014 dead transitions. [2024-05-12 12:16:52,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1014 transitions, 25446 flow [2024-05-12 12:16:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:16:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:16:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-05-12 12:16:52,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-05-12 12:16:52,951 INFO L175 Difference]: Start difference. First operand has 437 places, 861 transitions, 21682 flow. Second operand 11 states and 203 transitions. [2024-05-12 12:16:52,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1014 transitions, 25446 flow [2024-05-12 12:16:54,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1014 transitions, 25109 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 12:16:54,975 INFO L231 Difference]: Finished difference. Result has 445 places, 940 transitions, 23208 flow [2024-05-12 12:16:54,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21345, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23208, PETRI_PLACES=445, PETRI_TRANSITIONS=940} [2024-05-12 12:16:54,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-05-12 12:16:54,976 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 940 transitions, 23208 flow [2024-05-12 12:16:54,976 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 12:16:54,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:16:54,976 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 12:16:54,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 12:16:54,976 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:16:54,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:16:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 435268764, now seen corresponding path program 2 times [2024-05-12 12:16:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:16:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048022466] [2024-05-12 12:16:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:16:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:16:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:00,370 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 12:17:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048022466] [2024-05-12 12:17:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048022466] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:00,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:00,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:00,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367512860] [2024-05-12 12:17:00,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:00,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:00,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:00,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:00,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:00,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 940 transitions, 23208 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 12:17:00,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:00,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:00,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:03,899 INFO L124 PetriNetUnfolderBase]: 4574/7967 cut-off events. [2024-05-12 12:17:03,899 INFO L125 PetriNetUnfolderBase]: For 310119/310138 co-relation queries the response was YES. [2024-05-12 12:17:04,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72737 conditions, 7967 events. 4574/7967 cut-off events. For 310119/310138 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 57357 event pairs, 784 based on Foata normal form. 13/7977 useless extension candidates. Maximal degree in co-relation 72540. Up to 5368 conditions per place. [2024-05-12 12:17:04,263 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 746 selfloop transitions, 268 changer transitions 0/1021 dead transitions. [2024-05-12 12:17:04,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1021 transitions, 26142 flow [2024-05-12 12:17:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-05-12 12:17:04,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-05-12 12:17:04,265 INFO L175 Difference]: Start difference. First operand has 445 places, 940 transitions, 23208 flow. Second operand 11 states and 207 transitions. [2024-05-12 12:17:04,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1021 transitions, 26142 flow [2024-05-12 12:17:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1021 transitions, 26044 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 12:17:06,260 INFO L231 Difference]: Finished difference. Result has 451 places, 944 transitions, 23719 flow [2024-05-12 12:17:06,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23110, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23719, PETRI_PLACES=451, PETRI_TRANSITIONS=944} [2024-05-12 12:17:06,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-05-12 12:17:06,261 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 944 transitions, 23719 flow [2024-05-12 12:17:06,261 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 12:17:06,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:06,261 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 12:17:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 12:17:06,262 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:06,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1474131984, now seen corresponding path program 5 times [2024-05-12 12:17:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:06,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739211511] [2024-05-12 12:17:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:17:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739211511] [2024-05-12 12:17:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739211511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:11,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:11,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272477105] [2024-05-12 12:17:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:11,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:11,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 944 transitions, 23719 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 12:17:11,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:11,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:11,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:14,617 INFO L124 PetriNetUnfolderBase]: 4581/7993 cut-off events. [2024-05-12 12:17:14,617 INFO L125 PetriNetUnfolderBase]: For 320059/320076 co-relation queries the response was YES. [2024-05-12 12:17:14,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73990 conditions, 7993 events. 4581/7993 cut-off events. For 320059/320076 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 57636 event pairs, 908 based on Foata normal form. 4/7995 useless extension candidates. Maximal degree in co-relation 73791. Up to 6641 conditions per place. [2024-05-12 12:17:14,742 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 820 selfloop transitions, 165 changer transitions 0/992 dead transitions. [2024-05-12 12:17:14,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 992 transitions, 26220 flow [2024-05-12 12:17:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 12:17:14,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-05-12 12:17:14,743 INFO L175 Difference]: Start difference. First operand has 451 places, 944 transitions, 23719 flow. Second operand 11 states and 184 transitions. [2024-05-12 12:17:14,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 992 transitions, 26220 flow [2024-05-12 12:17:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 992 transitions, 25920 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 12:17:16,869 INFO L231 Difference]: Finished difference. Result has 456 places, 945 transitions, 23769 flow [2024-05-12 12:17:16,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23419, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23769, PETRI_PLACES=456, PETRI_TRANSITIONS=945} [2024-05-12 12:17:16,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-05-12 12:17:16,870 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 945 transitions, 23769 flow [2024-05-12 12:17:16,870 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 12:17:16,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:16,870 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 12:17:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 12:17:16,870 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:16,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1817878820, now seen corresponding path program 6 times [2024-05-12 12:17:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072795115] [2024-05-12 12:17:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:22,101 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 12:17:22,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072795115] [2024-05-12 12:17:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072795115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:22,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:22,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772031230] [2024-05-12 12:17:22,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:22,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:22,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:22,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 945 transitions, 23769 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 12:17:22,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:22,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:22,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:25,638 INFO L124 PetriNetUnfolderBase]: 4594/8016 cut-off events. [2024-05-12 12:17:25,639 INFO L125 PetriNetUnfolderBase]: For 318365/318382 co-relation queries the response was YES. [2024-05-12 12:17:25,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74571 conditions, 8016 events. 4594/8016 cut-off events. For 318365/318382 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 57922 event pairs, 900 based on Foata normal form. 4/8018 useless extension candidates. Maximal degree in co-relation 74370. Up to 6505 conditions per place. [2024-05-12 12:17:25,758 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 809 selfloop transitions, 183 changer transitions 0/999 dead transitions. [2024-05-12 12:17:25,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 999 transitions, 26497 flow [2024-05-12 12:17:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-05-12 12:17:25,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-05-12 12:17:25,759 INFO L175 Difference]: Start difference. First operand has 456 places, 945 transitions, 23769 flow. Second operand 11 states and 189 transitions. [2024-05-12 12:17:25,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 999 transitions, 26497 flow [2024-05-12 12:17:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 999 transitions, 26163 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 12:17:28,060 INFO L231 Difference]: Finished difference. Result has 458 places, 946 transitions, 23822 flow [2024-05-12 12:17:28,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23435, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23822, PETRI_PLACES=458, PETRI_TRANSITIONS=946} [2024-05-12 12:17:28,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-05-12 12:17:28,061 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 946 transitions, 23822 flow [2024-05-12 12:17:28,062 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 12:17:28,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:28,062 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 12:17:28,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 12:17:28,062 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:28,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1474304778, now seen corresponding path program 3 times [2024-05-12 12:17:28,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:28,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325933479] [2024-05-12 12:17:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:28,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:33,107 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 12:17:33,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:33,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325933479] [2024-05-12 12:17:33,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325933479] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:33,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:33,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:17:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667659352] [2024-05-12 12:17:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:33,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:17:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:17:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:17:33,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 946 transitions, 23822 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 12:17:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:33,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:36,509 INFO L124 PetriNetUnfolderBase]: 4596/8007 cut-off events. [2024-05-12 12:17:36,510 INFO L125 PetriNetUnfolderBase]: For 315358/315377 co-relation queries the response was YES. [2024-05-12 12:17:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74549 conditions, 8007 events. 4596/8007 cut-off events. For 315358/315377 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 57732 event pairs, 797 based on Foata normal form. 13/8017 useless extension candidates. Maximal degree in co-relation 74347. Up to 5336 conditions per place. [2024-05-12 12:17:36,646 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 731 selfloop transitions, 285 changer transitions 0/1023 dead transitions. [2024-05-12 12:17:36,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1023 transitions, 26724 flow [2024-05-12 12:17:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:17:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:17:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-05-12 12:17:36,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 12:17:36,647 INFO L175 Difference]: Start difference. First operand has 458 places, 946 transitions, 23822 flow. Second operand 10 states and 195 transitions. [2024-05-12 12:17:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1023 transitions, 26724 flow [2024-05-12 12:17:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1023 transitions, 26115 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 12:17:38,856 INFO L231 Difference]: Finished difference. Result has 459 places, 946 transitions, 23788 flow [2024-05-12 12:17:38,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23213, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23788, PETRI_PLACES=459, PETRI_TRANSITIONS=946} [2024-05-12 12:17:38,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-05-12 12:17:38,857 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 946 transitions, 23788 flow [2024-05-12 12:17:38,857 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 12:17:38,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:38,857 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 12:17:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 12:17:38,857 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:38,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1817883470, now seen corresponding path program 7 times [2024-05-12 12:17:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:38,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554816486] [2024-05-12 12:17:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:43,895 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 12:17:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554816486] [2024-05-12 12:17:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554816486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:43,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:17:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332179055] [2024-05-12 12:17:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:43,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:17:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:17:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:17:44,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:44,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 946 transitions, 23788 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 12:17:44,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:44,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:47,424 INFO L124 PetriNetUnfolderBase]: 4587/8005 cut-off events. [2024-05-12 12:17:47,424 INFO L125 PetriNetUnfolderBase]: For 315970/315987 co-relation queries the response was YES. [2024-05-12 12:17:47,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74377 conditions, 8005 events. 4587/8005 cut-off events. For 315970/315987 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 57827 event pairs, 909 based on Foata normal form. 4/8007 useless extension candidates. Maximal degree in co-relation 74175. Up to 6606 conditions per place. [2024-05-12 12:17:47,543 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 806 selfloop transitions, 183 changer transitions 0/996 dead transitions. [2024-05-12 12:17:47,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 996 transitions, 26320 flow [2024-05-12 12:17:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:17:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:17:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-05-12 12:17:47,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-05-12 12:17:47,545 INFO L175 Difference]: Start difference. First operand has 459 places, 946 transitions, 23788 flow. Second operand 11 states and 186 transitions. [2024-05-12 12:17:47,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 996 transitions, 26320 flow [2024-05-12 12:17:49,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 996 transitions, 25451 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-05-12 12:17:49,632 INFO L231 Difference]: Finished difference. Result has 460 places, 946 transitions, 23289 flow [2024-05-12 12:17:49,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=22919, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23289, PETRI_PLACES=460, PETRI_TRANSITIONS=946} [2024-05-12 12:17:49,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-05-12 12:17:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 946 transitions, 23289 flow [2024-05-12 12:17:49,633 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 12:17:49,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:49,633 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 12:17:49,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 12:17:49,633 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:49,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1478773614, now seen corresponding path program 8 times [2024-05-12 12:17:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:49,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600717741] [2024-05-12 12:17:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:17:54,257 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 12:17:54,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:17:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600717741] [2024-05-12 12:17:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600717741] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:17:54,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:17:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:17:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890658907] [2024-05-12 12:17:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:17:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:17:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:17:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:17:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:17:54,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:17:54,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 946 transitions, 23289 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 12:17:54,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:17:54,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:17:54,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:17:57,595 INFO L124 PetriNetUnfolderBase]: 4584/8000 cut-off events. [2024-05-12 12:17:57,595 INFO L125 PetriNetUnfolderBase]: For 303554/303571 co-relation queries the response was YES. [2024-05-12 12:17:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71794 conditions, 8000 events. 4584/8000 cut-off events. For 303554/303571 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 57781 event pairs, 872 based on Foata normal form. 4/7999 useless extension candidates. Maximal degree in co-relation 71592. Up to 5786 conditions per place. [2024-05-12 12:17:57,724 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 655 selfloop transitions, 321 changer transitions 0/983 dead transitions. [2024-05-12 12:17:57,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 983 transitions, 25539 flow [2024-05-12 12:17:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:17:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:17:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 12:17:57,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 12:17:57,725 INFO L175 Difference]: Start difference. First operand has 460 places, 946 transitions, 23289 flow. Second operand 10 states and 177 transitions. [2024-05-12 12:17:57,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 983 transitions, 25539 flow [2024-05-12 12:17:59,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 983 transitions, 25262 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 12:17:59,849 INFO L231 Difference]: Finished difference. Result has 462 places, 946 transitions, 23661 flow [2024-05-12 12:17:59,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23012, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23661, PETRI_PLACES=462, PETRI_TRANSITIONS=946} [2024-05-12 12:17:59,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-05-12 12:17:59,850 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 946 transitions, 23661 flow [2024-05-12 12:17:59,851 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 12:17:59,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:17:59,855 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 12:17:59,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 12:17:59,856 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:17:59,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:17:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1277606708, now seen corresponding path program 9 times [2024-05-12 12:17:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:17:59,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879904565] [2024-05-12 12:17:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:17:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:17:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:04,354 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 12:18:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879904565] [2024-05-12 12:18:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879904565] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:04,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:04,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:18:04,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568581193] [2024-05-12 12:18:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:04,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:18:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:18:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:18:04,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:04,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 946 transitions, 23661 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 12:18:04,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:04,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:04,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:07,822 INFO L124 PetriNetUnfolderBase]: 4674/8184 cut-off events. [2024-05-12 12:18:07,823 INFO L125 PetriNetUnfolderBase]: For 317520/317537 co-relation queries the response was YES. [2024-05-12 12:18:07,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73341 conditions, 8184 events. 4674/8184 cut-off events. For 317520/317537 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 59696 event pairs, 740 based on Foata normal form. 4/8184 useless extension candidates. Maximal degree in co-relation 73138. Up to 4033 conditions per place. [2024-05-12 12:18:07,964 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 704 selfloop transitions, 298 changer transitions 0/1009 dead transitions. [2024-05-12 12:18:07,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1009 transitions, 26424 flow [2024-05-12 12:18:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 12:18:07,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-05-12 12:18:07,966 INFO L175 Difference]: Start difference. First operand has 462 places, 946 transitions, 23661 flow. Second operand 10 states and 167 transitions. [2024-05-12 12:18:07,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1009 transitions, 26424 flow [2024-05-12 12:18:10,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1009 transitions, 25882 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 12:18:10,198 INFO L231 Difference]: Finished difference. Result has 468 places, 962 transitions, 24053 flow [2024-05-12 12:18:10,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23121, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24053, PETRI_PLACES=468, PETRI_TRANSITIONS=962} [2024-05-12 12:18:10,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-05-12 12:18:10,199 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 962 transitions, 24053 flow [2024-05-12 12:18:10,199 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 12:18:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:10,199 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 12:18:10,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 12:18:10,200 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:10,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1980529230, now seen corresponding path program 10 times [2024-05-12 12:18:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:10,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325958503] [2024-05-12 12:18:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:14,882 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 12:18:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325958503] [2024-05-12 12:18:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325958503] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:14,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:18:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418015350] [2024-05-12 12:18:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:18:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:18:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:18:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 962 transitions, 24053 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 12:18:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:18,568 INFO L124 PetriNetUnfolderBase]: 4708/8233 cut-off events. [2024-05-12 12:18:18,568 INFO L125 PetriNetUnfolderBase]: For 333085/333102 co-relation queries the response was YES. [2024-05-12 12:18:18,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74273 conditions, 8233 events. 4708/8233 cut-off events. For 333085/333102 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 59998 event pairs, 953 based on Foata normal form. 4/8235 useless extension candidates. Maximal degree in co-relation 74067. Up to 6428 conditions per place. [2024-05-12 12:18:18,687 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 800 selfloop transitions, 216 changer transitions 0/1023 dead transitions. [2024-05-12 12:18:18,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1023 transitions, 26923 flow [2024-05-12 12:18:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:18:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:18:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-05-12 12:18:18,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-05-12 12:18:18,689 INFO L175 Difference]: Start difference. First operand has 468 places, 962 transitions, 24053 flow. Second operand 11 states and 194 transitions. [2024-05-12 12:18:18,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1023 transitions, 26923 flow [2024-05-12 12:18:20,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 1023 transitions, 26459 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 12:18:20,640 INFO L231 Difference]: Finished difference. Result has 475 places, 966 transitions, 24130 flow [2024-05-12 12:18:20,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23613, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24130, PETRI_PLACES=475, PETRI_TRANSITIONS=966} [2024-05-12 12:18:20,641 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-05-12 12:18:20,641 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 966 transitions, 24130 flow [2024-05-12 12:18:20,641 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 12:18:20,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:20,641 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 12:18:20,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 12:18:20,642 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:20,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1980413910, now seen corresponding path program 11 times [2024-05-12 12:18:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209104075] [2024-05-12 12:18:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:25,149 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 12:18:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209104075] [2024-05-12 12:18:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209104075] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:25,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:18:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989300203] [2024-05-12 12:18:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:18:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:18:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:18:25,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:25,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 966 transitions, 24130 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 12:18:25,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:25,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:25,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:28,764 INFO L124 PetriNetUnfolderBase]: 4751/8315 cut-off events. [2024-05-12 12:18:28,764 INFO L125 PetriNetUnfolderBase]: For 342150/342167 co-relation queries the response was YES. [2024-05-12 12:18:28,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75027 conditions, 8315 events. 4751/8315 cut-off events. For 342150/342167 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 60858 event pairs, 959 based on Foata normal form. 4/8316 useless extension candidates. Maximal degree in co-relation 74819. Up to 6040 conditions per place. [2024-05-12 12:18:28,907 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 689 selfloop transitions, 315 changer transitions 0/1011 dead transitions. [2024-05-12 12:18:28,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1011 transitions, 26685 flow [2024-05-12 12:18:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 12:18:28,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 12:18:28,909 INFO L175 Difference]: Start difference. First operand has 475 places, 966 transitions, 24130 flow. Second operand 10 states and 178 transitions. [2024-05-12 12:18:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1011 transitions, 26685 flow [2024-05-12 12:18:31,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1011 transitions, 26454 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 12:18:31,273 INFO L231 Difference]: Finished difference. Result has 479 places, 970 transitions, 24597 flow [2024-05-12 12:18:31,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23907, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24597, PETRI_PLACES=479, PETRI_TRANSITIONS=970} [2024-05-12 12:18:31,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-05-12 12:18:31,274 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 970 transitions, 24597 flow [2024-05-12 12:18:31,274 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 12:18:31,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:31,274 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 12:18:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 12:18:31,274 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:31,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1980409260, now seen corresponding path program 12 times [2024-05-12 12:18:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582279788] [2024-05-12 12:18:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:36,022 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 12:18:36,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582279788] [2024-05-12 12:18:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582279788] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:18:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036310772] [2024-05-12 12:18:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:36,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:18:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:18:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:18:36,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:36,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 970 transitions, 24597 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 12:18:36,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:40,085 INFO L124 PetriNetUnfolderBase]: 4748/8310 cut-off events. [2024-05-12 12:18:40,086 INFO L125 PetriNetUnfolderBase]: For 342232/342249 co-relation queries the response was YES. [2024-05-12 12:18:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75738 conditions, 8310 events. 4748/8310 cut-off events. For 342232/342249 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 60806 event pairs, 979 based on Foata normal form. 4/8311 useless extension candidates. Maximal degree in co-relation 75528. Up to 6102 conditions per place. [2024-05-12 12:18:40,197 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 684 selfloop transitions, 317 changer transitions 0/1008 dead transitions. [2024-05-12 12:18:40,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 1008 transitions, 26900 flow [2024-05-12 12:18:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:18:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:18:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 12:18:40,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-05-12 12:18:40,199 INFO L175 Difference]: Start difference. First operand has 479 places, 970 transitions, 24597 flow. Second operand 10 states and 176 transitions. [2024-05-12 12:18:40,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 1008 transitions, 26900 flow [2024-05-12 12:18:42,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1008 transitions, 26523 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 12:18:42,394 INFO L231 Difference]: Finished difference. Result has 483 places, 970 transitions, 24859 flow [2024-05-12 12:18:42,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24220, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24859, PETRI_PLACES=483, PETRI_TRANSITIONS=970} [2024-05-12 12:18:42,395 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 441 predicate places. [2024-05-12 12:18:42,395 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 970 transitions, 24859 flow [2024-05-12 12:18:42,395 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 12:18:42,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:42,395 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 12:18:42,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 12:18:42,395 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:42,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1803271044, now seen corresponding path program 4 times [2024-05-12 12:18:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60988375] [2024-05-12 12:18:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:42,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:18:48,478 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 12:18:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:18:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60988375] [2024-05-12 12:18:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60988375] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:18:48,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:18:48,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:18:48,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427108171] [2024-05-12 12:18:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:18:48,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:18:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:18:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:18:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:18:48,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:18:48,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 970 transitions, 24859 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 12:18:48,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:18:48,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:18:48,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:18:52,490 INFO L124 PetriNetUnfolderBase]: 4784/8347 cut-off events. [2024-05-12 12:18:52,491 INFO L125 PetriNetUnfolderBase]: For 342162/342185 co-relation queries the response was YES. [2024-05-12 12:18:52,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76974 conditions, 8347 events. 4784/8347 cut-off events. For 342162/342185 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 60894 event pairs, 843 based on Foata normal form. 17/8361 useless extension candidates. Maximal degree in co-relation 76762. Up to 5784 conditions per place. [2024-05-12 12:18:52,642 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 771 selfloop transitions, 279 changer transitions 0/1057 dead transitions. [2024-05-12 12:18:52,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1057 transitions, 27915 flow [2024-05-12 12:18:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:18:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:18:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-05-12 12:18:52,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 12:18:52,645 INFO L175 Difference]: Start difference. First operand has 483 places, 970 transitions, 24859 flow. Second operand 11 states and 209 transitions. [2024-05-12 12:18:52,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1057 transitions, 27915 flow [2024-05-12 12:18:55,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 1057 transitions, 27470 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 12:18:55,087 INFO L231 Difference]: Finished difference. Result has 487 places, 973 transitions, 25029 flow [2024-05-12 12:18:55,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24414, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25029, PETRI_PLACES=487, PETRI_TRANSITIONS=973} [2024-05-12 12:18:55,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-05-12 12:18:55,088 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 973 transitions, 25029 flow [2024-05-12 12:18:55,088 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 12:18:55,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:18:55,089 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 12:18:55,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 12:18:55,089 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:18:55,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:18:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1809711480, now seen corresponding path program 13 times [2024-05-12 12:18:55,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:18:55,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977439908] [2024-05-12 12:18:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:18:55,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:18:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:19:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:19:00,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:19:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977439908] [2024-05-12 12:19:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977439908] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:19:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:19:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:19:00,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415146648] [2024-05-12 12:19:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:19:00,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:19:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:19:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:19:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:19:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 12:19:00,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 973 transitions, 25029 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 12:19:00,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:19:00,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 12:19:00,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:19:03,764 INFO L124 PetriNetUnfolderBase]: 4795/8394 cut-off events. [2024-05-12 12:19:03,764 INFO L125 PetriNetUnfolderBase]: For 355745/355760 co-relation queries the response was YES. [2024-05-12 12:19:03,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77903 conditions, 8394 events. 4795/8394 cut-off events. For 355745/355760 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 61507 event pairs, 998 based on Foata normal form. 3/8395 useless extension candidates. Maximal degree in co-relation 77690. Up to 6707 conditions per place. [2024-05-12 12:19:03,895 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 803 selfloop transitions, 217 changer transitions 0/1027 dead transitions. [2024-05-12 12:19:03,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1027 transitions, 27832 flow [2024-05-12 12:19:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:19:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:19:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 12:19:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 12:19:03,897 INFO L175 Difference]: Start difference. First operand has 487 places, 973 transitions, 25029 flow. Second operand 10 states and 180 transitions. [2024-05-12 12:19:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1027 transitions, 27832 flow Killed by 15