./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix016.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix016.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:10:37,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:10:37,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:10:37,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:10:37,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:10:37,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:10:37,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:10:37,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:10:37,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:10:37,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:10:37,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:10:37,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:10:37,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:10:37,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:10:37,274 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:10:37,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:10:37,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:10:37,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:10:37,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:10:37,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:10:37,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:10:37,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:10:37,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:10:37,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:10:37,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:10:37,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:10:37,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:10:37,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:10:37,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:10:37,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:10:37,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:10:37,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:10:37,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:10:37,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:10:37,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:10:37,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:10:37,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:10:37,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:10:37,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:10:37,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:10:37,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:10:37,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:10:37,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:10:37,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:10:37,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:10:37,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:10:37,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:10:37,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:10:37,525 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:10:37,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-27 22:10:38,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:10:38,808 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:10:38,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-27 22:10:38,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca578afc/b72f781047f2494e91a9000705e14c21/FLAGea1d50dc8 [2024-06-27 22:10:38,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca578afc/b72f781047f2494e91a9000705e14c21 [2024-06-27 22:10:38,836 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:10:38,836 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:10:38,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix016.oepc.yml/witness.yml [2024-06-27 22:10:38,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:10:38,960 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:10:38,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:10:38,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:10:38,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:10:38,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:10:38" (1/2) ... [2024-06-27 22:10:38,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59376dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:10:38, skipping insertion in model container [2024-06-27 22:10:38,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:10:38" (1/2) ... [2024-06-27 22:10:38,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79cf69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:10:38, skipping insertion in model container [2024-06-27 22:10:38,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:38" (2/2) ... [2024-06-27 22:10:38,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59376dee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:38, skipping insertion in model container [2024-06-27 22:10:38,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:38" (2/2) ... [2024-06-27 22:10:38,985 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:10:39,010 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:10:39,011 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:10:39,011 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:10:39,012 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:10:39,012 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:10:39,012 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-27 22:10:39,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:10:39,167 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] [2024-06-27 22:10:39,294 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:10:39,302 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:10:39,334 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:10:39,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:10:39,518 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:10:39,518 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39 WrapperNode [2024-06-27 22:10:39,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:10:39,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:10:39,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:10:39,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:10:39,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,609 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-27 22:10:39,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:10:39,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:10:39,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:10:39,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:10:39,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,649 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:10:39,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:10:39,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:10:39,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:10:39,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:10:39,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (1/1) ... [2024-06-27 22:10:39,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:10:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:10:39,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:10:39,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:10:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:10:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:10:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:10:39,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:10:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:10:39,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:10:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:10:39,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:10:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:10:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:10:39,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:10:39,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:10:39,770 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:10:39,888 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:10:39,890 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:10:40,411 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:10:40,412 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:10:40,582 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:10:40,582 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:10:40,582 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:10:40 BoogieIcfgContainer [2024-06-27 22:10:40,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:10:40,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:10:40,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:10:40,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:10:40,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:10:38" (1/4) ... [2024-06-27 22:10:40,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31266776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:10:40, skipping insertion in model container [2024-06-27 22:10:40,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:38" (2/4) ... [2024-06-27 22:10:40,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31266776 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:10:40, skipping insertion in model container [2024-06-27 22:10:40,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:39" (3/4) ... [2024-06-27 22:10:40,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31266776 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:10:40, skipping insertion in model container [2024-06-27 22:10:40,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:10:40" (4/4) ... [2024-06-27 22:10:40,593 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016.oepc.i [2024-06-27 22:10:40,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:10:40,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:10:40,606 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:10:40,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:10:40,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:10:40,717 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:10:40,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:10:40,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:10:40,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:10:40,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 22:10:40,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:10:40,780 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;@ed65b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:10:40,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:10:40,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:10:40,785 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:10:40,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:10:40,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:40,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:10:40,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:40,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 358158408, now seen corresponding path program 1 times [2024-06-27 22:10:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398347670] [2024-06-27 22:10:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:40,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:42,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398347670] [2024-06-27 22:10:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398347670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:42,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:42,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:10:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333992428] [2024-06-27 22:10:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:42,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:10:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:10:42,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:10:42,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:10:42,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:42,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:10:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:43,123 INFO L124 PetriNetUnfolderBase]: 3107/5177 cut-off events. [2024-06-27 22:10:43,123 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-27 22:10:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 5177 events. 3107/5177 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33448 event pairs, 2532 based on Foata normal form. 150/4880 useless extension candidates. Maximal degree in co-relation 9734. Up to 4482 conditions per place. [2024-06-27 22:10:43,148 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:10:43,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 217 flow [2024-06-27 22:10:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:10:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:10:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 22:10:43,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-27 22:10:43,159 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-27 22:10:43,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 217 flow [2024-06-27 22:10:43,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:10:43,163 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 124 flow [2024-06-27 22:10:43,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 22:10:43,167 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 22:10:43,167 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 124 flow [2024-06-27 22:10:43,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:43,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:43,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:10:43,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:43,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash 592895110, now seen corresponding path program 1 times [2024-06-27 22:10:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:43,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534440259] [2024-06-27 22:10:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:43,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534440259] [2024-06-27 22:10:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534440259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:44,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:10:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697466865] [2024-06-27 22:10:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:10:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:10:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:10:44,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:10:44,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:44,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:44,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:10:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:44,844 INFO L124 PetriNetUnfolderBase]: 3109/5133 cut-off events. [2024-06-27 22:10:44,845 INFO L125 PetriNetUnfolderBase]: For 723/723 co-relation queries the response was YES. [2024-06-27 22:10:44,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 5133 events. 3109/5133 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32879 event pairs, 1974 based on Foata normal form. 3/4713 useless extension candidates. Maximal degree in co-relation 10844. Up to 4467 conditions per place. [2024-06-27 22:10:44,872 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 50 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2024-06-27 22:10:44,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 315 flow [2024-06-27 22:10:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:10:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:10:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 22:10:44,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-06-27 22:10:44,874 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 124 flow. Second operand 4 states and 123 transitions. [2024-06-27 22:10:44,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 315 flow [2024-06-27 22:10:44,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:10:44,877 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 189 flow [2024-06-27 22:10:44,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-27 22:10:44,878 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-27 22:10:44,878 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 189 flow [2024-06-27 22:10:44,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:44,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:44,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:10:44,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:44,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1458398011, now seen corresponding path program 1 times [2024-06-27 22:10:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:44,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649784873] [2024-06-27 22:10:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649784873] [2024-06-27 22:10:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649784873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:10:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662424602] [2024-06-27 22:10:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:46,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:10:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:10:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:10:46,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:10:46,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:46,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:46,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:10:46,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:47,088 INFO L124 PetriNetUnfolderBase]: 3668/6068 cut-off events. [2024-06-27 22:10:47,088 INFO L125 PetriNetUnfolderBase]: For 2491/2491 co-relation queries the response was YES. [2024-06-27 22:10:47,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13982 conditions, 6068 events. 3668/6068 cut-off events. For 2491/2491 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39365 event pairs, 2231 based on Foata normal form. 3/5628 useless extension candidates. Maximal degree in co-relation 13967. Up to 5195 conditions per place. [2024-06-27 22:10:47,125 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 21 changer transitions 3/107 dead transitions. [2024-06-27 22:10:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 107 transitions, 545 flow [2024-06-27 22:10:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:10:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:10:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:10:47,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:10:47,131 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 189 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:10:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 107 transitions, 545 flow [2024-06-27 22:10:47,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 528 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:10:47,136 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 307 flow [2024-06-27 22:10:47,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-27 22:10:47,137 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-27 22:10:47,137 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 307 flow [2024-06-27 22:10:47,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:47,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:47,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:10:47,138 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:47,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1442353284, now seen corresponding path program 1 times [2024-06-27 22:10:47,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416264845] [2024-06-27 22:10:47,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:47,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416264845] [2024-06-27 22:10:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416264845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:47,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:47,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:10:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126432607] [2024-06-27 22:10:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:47,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:10:47,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:10:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:10:47,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-27 22:10:47,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-06-27 22:10:47,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:47,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-27 22:10:47,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:47,536 INFO L124 PetriNetUnfolderBase]: 1338/2684 cut-off events. [2024-06-27 22:10:47,537 INFO L125 PetriNetUnfolderBase]: For 1213/1277 co-relation queries the response was YES. [2024-06-27 22:10:47,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 2684 events. 1338/2684 cut-off events. For 1213/1277 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19721 event pairs, 779 based on Foata normal form. 9/2468 useless extension candidates. Maximal degree in co-relation 5922. Up to 1758 conditions per place. [2024-06-27 22:10:47,553 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 38 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-06-27 22:10:47,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 425 flow [2024-06-27 22:10:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:10:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:10:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 22:10:47,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-27 22:10:47,555 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 307 flow. Second operand 3 states and 110 transitions. [2024-06-27 22:10:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 425 flow [2024-06-27 22:10:47,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 402 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:10:47,559 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 288 flow [2024-06-27 22:10:47,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-06-27 22:10:47,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-27 22:10:47,561 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 288 flow [2024-06-27 22:10:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-06-27 22:10:47,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:47,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:10:47,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:47,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:47,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2034303590, now seen corresponding path program 1 times [2024-06-27 22:10:47,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:47,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897405755] [2024-06-27 22:10:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897405755] [2024-06-27 22:10:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897405755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:49,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:10:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305780056] [2024-06-27 22:10:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:10:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:10:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:10:49,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:10:49,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:49,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:49,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:10:49,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:49,929 INFO L124 PetriNetUnfolderBase]: 3128/4814 cut-off events. [2024-06-27 22:10:49,930 INFO L125 PetriNetUnfolderBase]: For 4924/4924 co-relation queries the response was YES. [2024-06-27 22:10:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13091 conditions, 4814 events. 3128/4814 cut-off events. For 4924/4924 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 28028 event pairs, 891 based on Foata normal form. 6/4753 useless extension candidates. Maximal degree in co-relation 13071. Up to 4384 conditions per place. [2024-06-27 22:10:49,953 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 23 changer transitions 6/116 dead transitions. [2024-06-27 22:10:49,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 634 flow [2024-06-27 22:10:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:10:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:10:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 22:10:49,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200607902735562 [2024-06-27 22:10:49,955 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 288 flow. Second operand 7 states and 204 transitions. [2024-06-27 22:10:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 634 flow [2024-06-27 22:10:49,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 116 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:10:49,962 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 343 flow [2024-06-27 22:10:49,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 22:10:49,963 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-27 22:10:49,967 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 343 flow [2024-06-27 22:10:49,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:49,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:49,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:49,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:10:49,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:49,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash 963647835, now seen corresponding path program 1 times [2024-06-27 22:10:49,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:49,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977296460] [2024-06-27 22:10:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:49,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977296460] [2024-06-27 22:10:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977296460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:51,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:10:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673264418] [2024-06-27 22:10:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:51,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:10:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:10:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:10:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:10:51,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:51,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:51,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:10:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:52,339 INFO L124 PetriNetUnfolderBase]: 3112/5288 cut-off events. [2024-06-27 22:10:52,339 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-06-27 22:10:52,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14026 conditions, 5288 events. 3112/5288 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33814 event pairs, 1299 based on Foata normal form. 4/5140 useless extension candidates. Maximal degree in co-relation 14004. Up to 4453 conditions per place. [2024-06-27 22:10:52,365 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-27 22:10:52,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 569 flow [2024-06-27 22:10:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:10:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:10:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 22:10:52,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 22:10:52,367 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 343 flow. Second operand 5 states and 124 transitions. [2024-06-27 22:10:52,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 569 flow [2024-06-27 22:10:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 512 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:10:52,371 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 364 flow [2024-06-27 22:10:52,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 22:10:52,374 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-27 22:10:52,374 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 364 flow [2024-06-27 22:10:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:52,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:52,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:10:52,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:52,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1159839837, now seen corresponding path program 1 times [2024-06-27 22:10:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408953277] [2024-06-27 22:10:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:52,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408953277] [2024-06-27 22:10:53,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408953277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:53,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:53,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:10:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924701556] [2024-06-27 22:10:53,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:10:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:10:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:10:53,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:10:53,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:53,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:53,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:10:53,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:54,450 INFO L124 PetriNetUnfolderBase]: 3172/5021 cut-off events. [2024-06-27 22:10:54,451 INFO L125 PetriNetUnfolderBase]: For 8469/8469 co-relation queries the response was YES. [2024-06-27 22:10:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 5021 events. 3172/5021 cut-off events. For 8469/8469 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29307 event pairs, 1149 based on Foata normal form. 2/4967 useless extension candidates. Maximal degree in co-relation 14648. Up to 4517 conditions per place. [2024-06-27 22:10:54,527 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 74 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-27 22:10:54,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 722 flow [2024-06-27 22:10:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:10:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:10:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:10:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 22:10:54,529 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 364 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:10:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 722 flow [2024-06-27 22:10:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 695 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:10:54,534 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 517 flow [2024-06-27 22:10:54,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-06-27 22:10:54,535 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-06-27 22:10:54,535 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 517 flow [2024-06-27 22:10:54,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:54,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:54,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:10:54,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:54,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1246050309, now seen corresponding path program 2 times [2024-06-27 22:10:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99313347] [2024-06-27 22:10:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:55,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:55,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99313347] [2024-06-27 22:10:55,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99313347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:55,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:55,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:10:55,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631004485] [2024-06-27 22:10:55,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:55,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:10:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:55,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:10:55,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:10:55,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:10:55,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:55,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:55,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:10:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:56,644 INFO L124 PetriNetUnfolderBase]: 3195/5065 cut-off events. [2024-06-27 22:10:56,644 INFO L125 PetriNetUnfolderBase]: For 11084/11084 co-relation queries the response was YES. [2024-06-27 22:10:56,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 5065 events. 3195/5065 cut-off events. For 11084/11084 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 29675 event pairs, 1143 based on Foata normal form. 4/5013 useless extension candidates. Maximal degree in co-relation 15954. Up to 4560 conditions per place. [2024-06-27 22:10:56,669 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 83 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-27 22:10:56,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 110 transitions, 808 flow [2024-06-27 22:10:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:10:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:10:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:10:56,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:10:56,671 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 517 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:10:56,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 110 transitions, 808 flow [2024-06-27 22:10:56,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 781 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 22:10:56,681 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 566 flow [2024-06-27 22:10:56,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-06-27 22:10:56,682 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-27 22:10:56,682 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 566 flow [2024-06-27 22:10:56,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:56,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:56,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:10:56,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:56,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash -402349313, now seen corresponding path program 3 times [2024-06-27 22:10:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286696466] [2024-06-27 22:10:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286696466] [2024-06-27 22:10:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286696466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:58,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:10:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181331802] [2024-06-27 22:10:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:10:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:58,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:10:58,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:10:58,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:10:58,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:58,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:58,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:10:58,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:59,180 INFO L124 PetriNetUnfolderBase]: 3246/5497 cut-off events. [2024-06-27 22:10:59,180 INFO L125 PetriNetUnfolderBase]: For 14406/14406 co-relation queries the response was YES. [2024-06-27 22:10:59,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17566 conditions, 5497 events. 3246/5497 cut-off events. For 14406/14406 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34913 event pairs, 1261 based on Foata normal form. 2/5343 useless extension candidates. Maximal degree in co-relation 17532. Up to 4575 conditions per place. [2024-06-27 22:10:59,213 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 84 selfloop transitions, 46 changer transitions 0/140 dead transitions. [2024-06-27 22:10:59,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 140 transitions, 1078 flow [2024-06-27 22:10:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:10:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:10:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 22:10:59,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-27 22:10:59,217 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 566 flow. Second operand 6 states and 160 transitions. [2024-06-27 22:10:59,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 140 transitions, 1078 flow [2024-06-27 22:10:59,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 1018 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:10:59,228 INFO L231 Difference]: Finished difference. Result has 83 places, 113 transitions, 853 flow [2024-06-27 22:10:59,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=853, PETRI_PLACES=83, PETRI_TRANSITIONS=113} [2024-06-27 22:10:59,229 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-06-27 22:10:59,229 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 113 transitions, 853 flow [2024-06-27 22:10:59,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:59,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:59,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:59,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:10:59,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:10:59,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 464893706, now seen corresponding path program 1 times [2024-06-27 22:10:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:59,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957279712] [2024-06-27 22:10:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:59,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:00,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:00,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957279712] [2024-06-27 22:11:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957279712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981726069] [2024-06-27 22:11:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:00,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:00,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 113 transitions, 853 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:00,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:00,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:00,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:01,925 INFO L124 PetriNetUnfolderBase]: 3321/5599 cut-off events. [2024-06-27 22:11:01,926 INFO L125 PetriNetUnfolderBase]: For 18905/18905 co-relation queries the response was YES. [2024-06-27 22:11:01,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 5599 events. 3321/5599 cut-off events. For 18905/18905 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 35450 event pairs, 1227 based on Foata normal form. 4/5446 useless extension candidates. Maximal degree in co-relation 19444. Up to 4699 conditions per place. [2024-06-27 22:11:02,003 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 126 selfloop transitions, 23 changer transitions 0/159 dead transitions. [2024-06-27 22:11:02,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 159 transitions, 1373 flow [2024-06-27 22:11:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 22:11:02,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 22:11:02,011 INFO L175 Difference]: Start difference. First operand has 83 places, 113 transitions, 853 flow. Second operand 8 states and 186 transitions. [2024-06-27 22:11:02,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 159 transitions, 1373 flow [2024-06-27 22:11:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 159 transitions, 1342 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:11:02,044 INFO L231 Difference]: Finished difference. Result has 92 places, 122 transitions, 994 flow [2024-06-27 22:11:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=92, PETRI_TRANSITIONS=122} [2024-06-27 22:11:02,050 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-27 22:11:02,050 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 122 transitions, 994 flow [2024-06-27 22:11:02,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:02,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:02,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:11:02,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1595297652, now seen corresponding path program 2 times [2024-06-27 22:11:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19061651] [2024-06-27 22:11:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:03,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19061651] [2024-06-27 22:11:03,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19061651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:03,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:03,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073815342] [2024-06-27 22:11:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:03,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:03,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:03,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 122 transitions, 994 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:03,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:03,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:03,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:04,491 INFO L124 PetriNetUnfolderBase]: 3362/5619 cut-off events. [2024-06-27 22:11:04,491 INFO L125 PetriNetUnfolderBase]: For 23187/23187 co-relation queries the response was YES. [2024-06-27 22:11:04,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20802 conditions, 5619 events. 3362/5619 cut-off events. For 23187/23187 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 35214 event pairs, 1208 based on Foata normal form. 2/5471 useless extension candidates. Maximal degree in co-relation 20762. Up to 4685 conditions per place. [2024-06-27 22:11:04,522 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 110 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2024-06-27 22:11:04,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 1604 flow [2024-06-27 22:11:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:11:04,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-27 22:11:04,526 INFO L175 Difference]: Start difference. First operand has 92 places, 122 transitions, 994 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:11:04,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 1604 flow [2024-06-27 22:11:04,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1538 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:04,548 INFO L231 Difference]: Finished difference. Result has 97 places, 137 transitions, 1251 flow [2024-06-27 22:11:04,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1251, PETRI_PLACES=97, PETRI_TRANSITIONS=137} [2024-06-27 22:11:04,548 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-27 22:11:04,549 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 137 transitions, 1251 flow [2024-06-27 22:11:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:04,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:04,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:04,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:11:04,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:04,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash 27147158, now seen corresponding path program 3 times [2024-06-27 22:11:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57033738] [2024-06-27 22:11:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:05,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:05,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57033738] [2024-06-27 22:11:05,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57033738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:05,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415443469] [2024-06-27 22:11:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:05,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:05,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 137 transitions, 1251 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:05,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:05,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:06,830 INFO L124 PetriNetUnfolderBase]: 3357/5615 cut-off events. [2024-06-27 22:11:06,830 INFO L125 PetriNetUnfolderBase]: For 27829/27829 co-relation queries the response was YES. [2024-06-27 22:11:06,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21937 conditions, 5615 events. 3357/5615 cut-off events. For 27829/27829 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 35249 event pairs, 1205 based on Foata normal form. 2/5469 useless extension candidates. Maximal degree in co-relation 21894. Up to 4781 conditions per place. [2024-06-27 22:11:06,869 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 133 selfloop transitions, 24 changer transitions 0/167 dead transitions. [2024-06-27 22:11:06,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 167 transitions, 1684 flow [2024-06-27 22:11:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:11:06,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 22:11:06,872 INFO L175 Difference]: Start difference. First operand has 97 places, 137 transitions, 1251 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:11:06,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 167 transitions, 1684 flow [2024-06-27 22:11:06,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 1617 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 22:11:06,901 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 1290 flow [2024-06-27 22:11:06,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1290, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2024-06-27 22:11:06,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-27 22:11:06,903 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 1290 flow [2024-06-27 22:11:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:06,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:06,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:11:06,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 763780510, now seen corresponding path program 4 times [2024-06-27 22:11:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59491761] [2024-06-27 22:11:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:08,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:08,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59491761] [2024-06-27 22:11:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59491761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058962677] [2024-06-27 22:11:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:08,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:08,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:08,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 1290 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:08,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:08,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:08,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:09,546 INFO L124 PetriNetUnfolderBase]: 3476/5836 cut-off events. [2024-06-27 22:11:09,546 INFO L125 PetriNetUnfolderBase]: For 30812/30820 co-relation queries the response was YES. [2024-06-27 22:11:09,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23213 conditions, 5836 events. 3476/5836 cut-off events. For 30812/30820 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 36776 event pairs, 1218 based on Foata normal form. 6/5687 useless extension candidates. Maximal degree in co-relation 23167. Up to 4854 conditions per place. [2024-06-27 22:11:09,589 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 151 selfloop transitions, 64 changer transitions 0/225 dead transitions. [2024-06-27 22:11:09,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 225 transitions, 2301 flow [2024-06-27 22:11:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:11:09,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 22:11:09,592 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 1290 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:11:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 225 transitions, 2301 flow [2024-06-27 22:11:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 225 transitions, 2250 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:09,629 INFO L231 Difference]: Finished difference. Result has 110 places, 177 transitions, 1803 flow [2024-06-27 22:11:09,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=110, PETRI_TRANSITIONS=177} [2024-06-27 22:11:09,631 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-27 22:11:09,631 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 177 transitions, 1803 flow [2024-06-27 22:11:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:09,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:09,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:11:09,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1736658038, now seen corresponding path program 5 times [2024-06-27 22:11:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:09,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015479100] [2024-06-27 22:11:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:11,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015479100] [2024-06-27 22:11:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015479100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:11,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:11,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593742925] [2024-06-27 22:11:11,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:11,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:11,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:11,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:11,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 177 transitions, 1803 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:11,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:11,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:11,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:12,822 INFO L124 PetriNetUnfolderBase]: 3542/5937 cut-off events. [2024-06-27 22:11:12,823 INFO L125 PetriNetUnfolderBase]: For 39113/39121 co-relation queries the response was YES. [2024-06-27 22:11:12,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25614 conditions, 5937 events. 3542/5937 cut-off events. For 39113/39121 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 37387 event pairs, 1219 based on Foata normal form. 7/5789 useless extension candidates. Maximal degree in co-relation 25566. Up to 4954 conditions per place. [2024-06-27 22:11:12,857 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 157 selfloop transitions, 77 changer transitions 0/244 dead transitions. [2024-06-27 22:11:12,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 244 transitions, 2815 flow [2024-06-27 22:11:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:11:12,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:11:12,860 INFO L175 Difference]: Start difference. First operand has 110 places, 177 transitions, 1803 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:11:12,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 244 transitions, 2815 flow [2024-06-27 22:11:12,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 244 transitions, 2542 flow, removed 129 selfloop flow, removed 2 redundant places. [2024-06-27 22:11:12,902 INFO L231 Difference]: Finished difference. Result has 117 places, 210 transitions, 2188 flow [2024-06-27 22:11:12,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2188, PETRI_PLACES=117, PETRI_TRANSITIONS=210} [2024-06-27 22:11:12,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-27 22:11:12,903 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 210 transitions, 2188 flow [2024-06-27 22:11:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:12,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:12,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:11:12,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:12,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash 399129588, now seen corresponding path program 6 times [2024-06-27 22:11:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113353657] [2024-06-27 22:11:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:14,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113353657] [2024-06-27 22:11:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113353657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:14,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404297779] [2024-06-27 22:11:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:14,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:14,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:14,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 210 transitions, 2188 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:14,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:14,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:14,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:16,186 INFO L124 PetriNetUnfolderBase]: 3579/5963 cut-off events. [2024-06-27 22:11:16,187 INFO L125 PetriNetUnfolderBase]: For 41404/41404 co-relation queries the response was YES. [2024-06-27 22:11:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26001 conditions, 5963 events. 3579/5963 cut-off events. For 41404/41404 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 37381 event pairs, 1204 based on Foata normal form. 2/5815 useless extension candidates. Maximal degree in co-relation 25950. Up to 4830 conditions per place. [2024-06-27 22:11:16,229 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 111 selfloop transitions, 142 changer transitions 0/263 dead transitions. [2024-06-27 22:11:16,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 263 transitions, 2976 flow [2024-06-27 22:11:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:11:16,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 22:11:16,231 INFO L175 Difference]: Start difference. First operand has 117 places, 210 transitions, 2188 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:11:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 263 transitions, 2976 flow [2024-06-27 22:11:16,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 263 transitions, 2904 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:16,275 INFO L231 Difference]: Finished difference. Result has 123 places, 230 transitions, 2621 flow [2024-06-27 22:11:16,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2621, PETRI_PLACES=123, PETRI_TRANSITIONS=230} [2024-06-27 22:11:16,276 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 22:11:16,276 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 230 transitions, 2621 flow [2024-06-27 22:11:16,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:16,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:16,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:16,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:11:16,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:16,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash 27423213, now seen corresponding path program 1 times [2024-06-27 22:11:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746347775] [2024-06-27 22:11:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:16,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:18,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746347775] [2024-06-27 22:11:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746347775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838575110] [2024-06-27 22:11:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:18,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:18,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:18,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 230 transitions, 2621 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:18,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:18,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:18,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:19,840 INFO L124 PetriNetUnfolderBase]: 4557/7419 cut-off events. [2024-06-27 22:11:19,841 INFO L125 PetriNetUnfolderBase]: For 61037/61037 co-relation queries the response was YES. [2024-06-27 22:11:19,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33772 conditions, 7419 events. 4557/7419 cut-off events. For 61037/61037 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45976 event pairs, 1603 based on Foata normal form. 4/7244 useless extension candidates. Maximal degree in co-relation 33719. Up to 6395 conditions per place. [2024-06-27 22:11:19,898 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 240 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-06-27 22:11:19,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 273 transitions, 3425 flow [2024-06-27 22:11:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 22:11:19,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2024-06-27 22:11:19,900 INFO L175 Difference]: Start difference. First operand has 123 places, 230 transitions, 2621 flow. Second operand 8 states and 179 transitions. [2024-06-27 22:11:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 273 transitions, 3425 flow [2024-06-27 22:11:19,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 273 transitions, 3199 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:19,976 INFO L231 Difference]: Finished difference. Result has 129 places, 239 transitions, 2577 flow [2024-06-27 22:11:19,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2577, PETRI_PLACES=129, PETRI_TRANSITIONS=239} [2024-06-27 22:11:19,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 22:11:19,977 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 239 transitions, 2577 flow [2024-06-27 22:11:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:19,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:19,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:19,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:11:19,977 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:19,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash -286157397, now seen corresponding path program 1 times [2024-06-27 22:11:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:19,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406739015] [2024-06-27 22:11:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:19,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406739015] [2024-06-27 22:11:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406739015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:21,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:21,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:11:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497116665] [2024-06-27 22:11:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:11:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:11:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:11:21,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:21,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 239 transitions, 2577 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:21,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:21,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:21,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:22,681 INFO L124 PetriNetUnfolderBase]: 4904/8153 cut-off events. [2024-06-27 22:11:22,682 INFO L125 PetriNetUnfolderBase]: For 72961/73094 co-relation queries the response was YES. [2024-06-27 22:11:22,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36332 conditions, 8153 events. 4904/8153 cut-off events. For 72961/73094 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52524 event pairs, 1874 based on Foata normal form. 65/7910 useless extension candidates. Maximal degree in co-relation 36276. Up to 6886 conditions per place. [2024-06-27 22:11:22,754 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 221 selfloop transitions, 13 changer transitions 0/256 dead transitions. [2024-06-27 22:11:22,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 256 transitions, 3139 flow [2024-06-27 22:11:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:11:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:11:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 22:11:22,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:11:22,756 INFO L175 Difference]: Start difference. First operand has 129 places, 239 transitions, 2577 flow. Second operand 5 states and 115 transitions. [2024-06-27 22:11:22,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 256 transitions, 3139 flow [2024-06-27 22:11:22,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 256 transitions, 3038 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:22,837 INFO L231 Difference]: Finished difference. Result has 129 places, 242 transitions, 2535 flow [2024-06-27 22:11:22,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2535, PETRI_PLACES=129, PETRI_TRANSITIONS=242} [2024-06-27 22:11:22,837 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 22:11:22,837 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 242 transitions, 2535 flow [2024-06-27 22:11:22,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:22,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:22,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:22,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:11:22,838 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:22,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash -332543592, now seen corresponding path program 1 times [2024-06-27 22:11:22,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:22,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111866402] [2024-06-27 22:11:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:24,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111866402] [2024-06-27 22:11:24,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111866402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:24,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:24,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309208138] [2024-06-27 22:11:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:24,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:24,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 242 transitions, 2535 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:24,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:24,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:26,112 INFO L124 PetriNetUnfolderBase]: 4877/7622 cut-off events. [2024-06-27 22:11:26,112 INFO L125 PetriNetUnfolderBase]: For 76535/76535 co-relation queries the response was YES. [2024-06-27 22:11:26,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37069 conditions, 7622 events. 4877/7622 cut-off events. For 76535/76535 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 45314 event pairs, 1568 based on Foata normal form. 2/7465 useless extension candidates. Maximal degree in co-relation 37013. Up to 6712 conditions per place. [2024-06-27 22:11:26,175 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 72 changer transitions 0/325 dead transitions. [2024-06-27 22:11:26,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 325 transitions, 3829 flow [2024-06-27 22:11:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:11:26,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 22:11:26,176 INFO L175 Difference]: Start difference. First operand has 129 places, 242 transitions, 2535 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:11:26,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 325 transitions, 3829 flow [2024-06-27 22:11:26,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 325 transitions, 3794 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:26,263 INFO L231 Difference]: Finished difference. Result has 138 places, 275 transitions, 3135 flow [2024-06-27 22:11:26,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3135, PETRI_PLACES=138, PETRI_TRANSITIONS=275} [2024-06-27 22:11:26,263 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2024-06-27 22:11:26,264 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 275 transitions, 3135 flow [2024-06-27 22:11:26,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:26,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:26,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:26,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:11:26,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:26,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -332453382, now seen corresponding path program 2 times [2024-06-27 22:11:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5286302] [2024-06-27 22:11:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:28,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5286302] [2024-06-27 22:11:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5286302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:28,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685601052] [2024-06-27 22:11:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:28,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:28,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 275 transitions, 3135 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:28,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:28,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:29,810 INFO L124 PetriNetUnfolderBase]: 4682/7418 cut-off events. [2024-06-27 22:11:29,811 INFO L125 PetriNetUnfolderBase]: For 90437/90439 co-relation queries the response was YES. [2024-06-27 22:11:29,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38770 conditions, 7418 events. 4682/7418 cut-off events. For 90437/90439 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 45363 event pairs, 1373 based on Foata normal form. 4/7173 useless extension candidates. Maximal degree in co-relation 38710. Up to 6352 conditions per place. [2024-06-27 22:11:29,879 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 215 selfloop transitions, 92 changer transitions 0/322 dead transitions. [2024-06-27 22:11:29,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 322 transitions, 4068 flow [2024-06-27 22:11:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:11:29,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:11:29,893 INFO L175 Difference]: Start difference. First operand has 138 places, 275 transitions, 3135 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:11:29,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 322 transitions, 4068 flow [2024-06-27 22:11:30,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 322 transitions, 3942 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-27 22:11:30,042 INFO L231 Difference]: Finished difference. Result has 145 places, 281 transitions, 3392 flow [2024-06-27 22:11:30,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3392, PETRI_PLACES=145, PETRI_TRANSITIONS=281} [2024-06-27 22:11:30,042 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-27 22:11:30,043 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 281 transitions, 3392 flow [2024-06-27 22:11:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:30,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:30,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:30,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:11:30,043 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:30,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1390399648, now seen corresponding path program 1 times [2024-06-27 22:11:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586817314] [2024-06-27 22:11:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:31,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:31,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586817314] [2024-06-27 22:11:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586817314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:31,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610433627] [2024-06-27 22:11:31,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:31,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:31,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:31,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:31,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:31,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:31,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 281 transitions, 3392 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:31,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:31,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:31,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:33,115 INFO L124 PetriNetUnfolderBase]: 4958/7738 cut-off events. [2024-06-27 22:11:33,115 INFO L125 PetriNetUnfolderBase]: For 100778/100781 co-relation queries the response was YES. [2024-06-27 22:11:33,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41740 conditions, 7738 events. 4958/7738 cut-off events. For 100778/100781 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46040 event pairs, 1498 based on Foata normal form. 4/7577 useless extension candidates. Maximal degree in co-relation 41677. Up to 6812 conditions per place. [2024-06-27 22:11:33,182 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 270 selfloop transitions, 54 changer transitions 0/334 dead transitions. [2024-06-27 22:11:33,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 334 transitions, 4445 flow [2024-06-27 22:11:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:11:33,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 22:11:33,185 INFO L175 Difference]: Start difference. First operand has 145 places, 281 transitions, 3392 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:11:33,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 334 transitions, 4445 flow [2024-06-27 22:11:33,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 334 transitions, 4336 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:33,360 INFO L231 Difference]: Finished difference. Result has 150 places, 294 transitions, 3592 flow [2024-06-27 22:11:33,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3592, PETRI_PLACES=150, PETRI_TRANSITIONS=294} [2024-06-27 22:11:33,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-06-27 22:11:33,360 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 294 transitions, 3592 flow [2024-06-27 22:11:33,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:33,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:33,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:33,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:11:33,361 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:33,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2085379236, now seen corresponding path program 3 times [2024-06-27 22:11:33,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:33,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412822765] [2024-06-27 22:11:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:34,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412822765] [2024-06-27 22:11:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412822765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754967165] [2024-06-27 22:11:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:34,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:34,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:34,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 294 transitions, 3592 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:34,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:34,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:34,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:36,422 INFO L124 PetriNetUnfolderBase]: 4789/7579 cut-off events. [2024-06-27 22:11:36,422 INFO L125 PetriNetUnfolderBase]: For 115211/115228 co-relation queries the response was YES. [2024-06-27 22:11:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43242 conditions, 7579 events. 4789/7579 cut-off events. For 115211/115228 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 46418 event pairs, 1348 based on Foata normal form. 3/7314 useless extension candidates. Maximal degree in co-relation 43176. Up to 6283 conditions per place. [2024-06-27 22:11:36,490 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 187 selfloop transitions, 153 changer transitions 0/356 dead transitions. [2024-06-27 22:11:36,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 356 transitions, 4904 flow [2024-06-27 22:11:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:11:36,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 22:11:36,493 INFO L175 Difference]: Start difference. First operand has 150 places, 294 transitions, 3592 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:11:36,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 356 transitions, 4904 flow [2024-06-27 22:11:36,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 356 transitions, 4775 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:36,673 INFO L231 Difference]: Finished difference. Result has 155 places, 310 transitions, 4232 flow [2024-06-27 22:11:36,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4232, PETRI_PLACES=155, PETRI_TRANSITIONS=310} [2024-06-27 22:11:36,674 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 22:11:36,674 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 310 transitions, 4232 flow [2024-06-27 22:11:36,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:36,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:36,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:36,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:11:36,675 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:36,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1908404572, now seen corresponding path program 4 times [2024-06-27 22:11:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588242913] [2024-06-27 22:11:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:38,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588242913] [2024-06-27 22:11:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588242913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871932131] [2024-06-27 22:11:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:38,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 310 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:38,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:38,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:40,109 INFO L124 PetriNetUnfolderBase]: 4843/7651 cut-off events. [2024-06-27 22:11:40,110 INFO L125 PetriNetUnfolderBase]: For 136223/136225 co-relation queries the response was YES. [2024-06-27 22:11:40,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47045 conditions, 7651 events. 4843/7651 cut-off events. For 136223/136225 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 46782 event pairs, 1356 based on Foata normal form. 6/7434 useless extension candidates. Maximal degree in co-relation 46976. Up to 6511 conditions per place. [2024-06-27 22:11:40,184 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 302 selfloop transitions, 48 changer transitions 0/366 dead transitions. [2024-06-27 22:11:40,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 366 transitions, 5544 flow [2024-06-27 22:11:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:11:40,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 22:11:40,186 INFO L175 Difference]: Start difference. First operand has 155 places, 310 transitions, 4232 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:11:40,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 366 transitions, 5544 flow [2024-06-27 22:11:40,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 366 transitions, 5393 flow, removed 74 selfloop flow, removed 1 redundant places. [2024-06-27 22:11:40,435 INFO L231 Difference]: Finished difference. Result has 163 places, 318 transitions, 4376 flow [2024-06-27 22:11:40,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4376, PETRI_PLACES=163, PETRI_TRANSITIONS=318} [2024-06-27 22:11:40,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 22:11:40,436 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 318 transitions, 4376 flow [2024-06-27 22:11:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:40,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:40,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:40,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:11:40,437 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:40,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1762502744, now seen corresponding path program 2 times [2024-06-27 22:11:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628305644] [2024-06-27 22:11:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628305644] [2024-06-27 22:11:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628305644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137487247] [2024-06-27 22:11:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:42,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:42,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 318 transitions, 4376 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:42,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:42,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:43,580 INFO L124 PetriNetUnfolderBase]: 5229/8138 cut-off events. [2024-06-27 22:11:43,580 INFO L125 PetriNetUnfolderBase]: For 143180/143180 co-relation queries the response was YES. [2024-06-27 22:11:43,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50065 conditions, 8138 events. 5229/8138 cut-off events. For 143180/143180 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48507 event pairs, 1556 based on Foata normal form. 2/7970 useless extension candidates. Maximal degree in co-relation 49992. Up to 7258 conditions per place. [2024-06-27 22:11:43,664 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 318 selfloop transitions, 35 changer transitions 0/363 dead transitions. [2024-06-27 22:11:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 363 transitions, 5504 flow [2024-06-27 22:11:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:11:43,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 22:11:43,666 INFO L175 Difference]: Start difference. First operand has 163 places, 318 transitions, 4376 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:11:43,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 363 transitions, 5504 flow [2024-06-27 22:11:43,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 363 transitions, 5231 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:43,940 INFO L231 Difference]: Finished difference. Result has 165 places, 329 transitions, 4442 flow [2024-06-27 22:11:43,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4442, PETRI_PLACES=165, PETRI_TRANSITIONS=329} [2024-06-27 22:11:43,942 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-06-27 22:11:43,942 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 329 transitions, 4442 flow [2024-06-27 22:11:43,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:43,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:43,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:43,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:11:43,943 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:43,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash -853396960, now seen corresponding path program 5 times [2024-06-27 22:11:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164383423] [2024-06-27 22:11:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:43,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164383423] [2024-06-27 22:11:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164383423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:45,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038726234] [2024-06-27 22:11:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:45,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:45,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:45,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 329 transitions, 4442 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-27 22:11:45,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:45,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:47,387 INFO L124 PetriNetUnfolderBase]: 5265/8294 cut-off events. [2024-06-27 22:11:47,388 INFO L125 PetriNetUnfolderBase]: For 158700/158707 co-relation queries the response was YES. [2024-06-27 22:11:47,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52353 conditions, 8294 events. 5265/8294 cut-off events. For 158700/158707 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50896 event pairs, 1242 based on Foata normal form. 7/8042 useless extension candidates. Maximal degree in co-relation 52279. Up to 6610 conditions per place. [2024-06-27 22:11:47,470 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 241 selfloop transitions, 168 changer transitions 0/425 dead transitions. [2024-06-27 22:11:47,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 425 transitions, 6174 flow [2024-06-27 22:11:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:11:47,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 22:11:47,471 INFO L175 Difference]: Start difference. First operand has 165 places, 329 transitions, 4442 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:11:47,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 425 transitions, 6174 flow [2024-06-27 22:11:47,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 425 transitions, 6119 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:47,699 INFO L231 Difference]: Finished difference. Result has 174 places, 370 transitions, 5483 flow [2024-06-27 22:11:47,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5483, PETRI_PLACES=174, PETRI_TRANSITIONS=370} [2024-06-27 22:11:47,699 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 22:11:47,699 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 370 transitions, 5483 flow [2024-06-27 22:11:47,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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) [2024-06-27 22:11:47,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:47,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:11:47,700 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:47,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1728160874, now seen corresponding path program 6 times [2024-06-27 22:11:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:47,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183705205] [2024-06-27 22:11:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183705205] [2024-06-27 22:11:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183705205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669079136] [2024-06-27 22:11:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:49,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:11:49,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 370 transitions, 5483 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:49,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:49,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:11:49,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:51,050 INFO L124 PetriNetUnfolderBase]: 5086/8281 cut-off events. [2024-06-27 22:11:51,051 INFO L125 PetriNetUnfolderBase]: For 189192/189206 co-relation queries the response was YES. [2024-06-27 22:11:51,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55170 conditions, 8281 events. 5086/8281 cut-off events. For 189192/189206 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 53112 event pairs, 1376 based on Foata normal form. 19/7914 useless extension candidates. Maximal degree in co-relation 55091. Up to 6298 conditions per place. [2024-06-27 22:11:51,144 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 265 selfloop transitions, 148 changer transitions 0/440 dead transitions. [2024-06-27 22:11:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 440 transitions, 7207 flow [2024-06-27 22:11:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-27 22:11:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930851063829787 [2024-06-27 22:11:51,145 INFO L175 Difference]: Start difference. First operand has 174 places, 370 transitions, 5483 flow. Second operand 8 states and 223 transitions. [2024-06-27 22:11:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 440 transitions, 7207 flow [2024-06-27 22:11:51,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 440 transitions, 6987 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:51,504 INFO L231 Difference]: Finished difference. Result has 179 places, 381 transitions, 5963 flow [2024-06-27 22:11:51,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5313, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5963, PETRI_PLACES=179, PETRI_TRANSITIONS=381} [2024-06-27 22:11:51,505 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 22:11:51,505 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 381 transitions, 5963 flow [2024-06-27 22:11:51,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:51,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:51,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:11:51,506 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:51,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2105551532, now seen corresponding path program 7 times [2024-06-27 22:11:51,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927607844] [2024-06-27 22:11:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927607844] [2024-06-27 22:11:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927607844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:53,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:53,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289955073] [2024-06-27 22:11:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:53,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:11:53,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 381 transitions, 5963 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:53,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:53,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:11:53,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:54,948 INFO L124 PetriNetUnfolderBase]: 5084/8161 cut-off events. [2024-06-27 22:11:54,949 INFO L125 PetriNetUnfolderBase]: For 188942/188950 co-relation queries the response was YES. [2024-06-27 22:11:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55758 conditions, 8161 events. 5084/8161 cut-off events. For 188942/188950 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 51805 event pairs, 1610 based on Foata normal form. 10/7856 useless extension candidates. Maximal degree in co-relation 55678. Up to 6492 conditions per place. [2024-06-27 22:11:55,036 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 278 selfloop transitions, 123 changer transitions 0/428 dead transitions. [2024-06-27 22:11:55,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 428 transitions, 7170 flow [2024-06-27 22:11:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:11:55,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-27 22:11:55,037 INFO L175 Difference]: Start difference. First operand has 179 places, 381 transitions, 5963 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:11:55,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 428 transitions, 7170 flow [2024-06-27 22:11:55,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 428 transitions, 6849 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:55,420 INFO L231 Difference]: Finished difference. Result has 182 places, 381 transitions, 5934 flow [2024-06-27 22:11:55,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5646, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5934, PETRI_PLACES=182, PETRI_TRANSITIONS=381} [2024-06-27 22:11:55,421 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-27 22:11:55,421 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 381 transitions, 5934 flow [2024-06-27 22:11:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:55,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:55,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:11:55,422 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:55,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -123998784, now seen corresponding path program 3 times [2024-06-27 22:11:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755657501] [2024-06-27 22:11:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755657501] [2024-06-27 22:11:57,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755657501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:57,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:57,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974222907] [2024-06-27 22:11:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:57,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:11:57,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 381 transitions, 5934 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:57,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:57,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:11:57,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:58,995 INFO L124 PetriNetUnfolderBase]: 5773/8988 cut-off events. [2024-06-27 22:11:59,000 INFO L125 PetriNetUnfolderBase]: For 194084/194093 co-relation queries the response was YES. [2024-06-27 22:11:59,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60838 conditions, 8988 events. 5773/8988 cut-off events. For 194084/194093 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 54240 event pairs, 1477 based on Foata normal form. 8/8813 useless extension candidates. Maximal degree in co-relation 60757. Up to 7751 conditions per place. [2024-06-27 22:11:59,097 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 362 selfloop transitions, 87 changer transitions 0/459 dead transitions. [2024-06-27 22:11:59,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 459 transitions, 7672 flow [2024-06-27 22:11:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:11:59,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-27 22:11:59,099 INFO L175 Difference]: Start difference. First operand has 182 places, 381 transitions, 5934 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:11:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 459 transitions, 7672 flow [2024-06-27 22:11:59,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 459 transitions, 7393 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:11:59,474 INFO L231 Difference]: Finished difference. Result has 185 places, 410 transitions, 6405 flow [2024-06-27 22:11:59,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5661, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6405, PETRI_PLACES=185, PETRI_TRANSITIONS=410} [2024-06-27 22:11:59,475 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-06-27 22:11:59,475 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 410 transitions, 6405 flow [2024-06-27 22:11:59,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:59,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:59,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:59,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:11:59,476 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:59,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash -124004736, now seen corresponding path program 8 times [2024-06-27 22:11:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730323894] [2024-06-27 22:11:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:01,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730323894] [2024-06-27 22:12:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730323894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003238685] [2024-06-27 22:12:01,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:01,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:12:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 410 transitions, 6405 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:12:01,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:02,948 INFO L124 PetriNetUnfolderBase]: 5211/8269 cut-off events. [2024-06-27 22:12:02,948 INFO L125 PetriNetUnfolderBase]: For 200955/200991 co-relation queries the response was YES. [2024-06-27 22:12:03,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57931 conditions, 8269 events. 5211/8269 cut-off events. For 200955/200991 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 52238 event pairs, 1379 based on Foata normal form. 16/7972 useless extension candidates. Maximal degree in co-relation 57847. Up to 6259 conditions per place. [2024-06-27 22:12:03,046 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 283 selfloop transitions, 162 changer transitions 0/475 dead transitions. [2024-06-27 22:12:03,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 475 transitions, 8242 flow [2024-06-27 22:12:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:12:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:12:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 22:12:03,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601823708206687 [2024-06-27 22:12:03,048 INFO L175 Difference]: Start difference. First operand has 185 places, 410 transitions, 6405 flow. Second operand 7 states and 198 transitions. [2024-06-27 22:12:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 475 transitions, 8242 flow [2024-06-27 22:12:03,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 475 transitions, 8087 flow, removed 72 selfloop flow, removed 1 redundant places. [2024-06-27 22:12:03,529 INFO L231 Difference]: Finished difference. Result has 193 places, 424 transitions, 7075 flow [2024-06-27 22:12:03,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6258, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7075, PETRI_PLACES=193, PETRI_TRANSITIONS=424} [2024-06-27 22:12:03,530 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-27 22:12:03,530 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 424 transitions, 7075 flow [2024-06-27 22:12:03,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:03,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:03,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:03,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:12:03,531 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:03,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -236256830, now seen corresponding path program 1 times [2024-06-27 22:12:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:03,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135077082] [2024-06-27 22:12:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:05,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:05,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135077082] [2024-06-27 22:12:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135077082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:05,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:12:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194916524] [2024-06-27 22:12:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:05,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:12:05,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:05,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:12:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:12:05,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:05,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 424 transitions, 7075 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:05,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:05,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:05,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:07,355 INFO L124 PetriNetUnfolderBase]: 5941/9292 cut-off events. [2024-06-27 22:12:07,355 INFO L125 PetriNetUnfolderBase]: For 242383/242494 co-relation queries the response was YES. [2024-06-27 22:12:07,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66616 conditions, 9292 events. 5941/9292 cut-off events. For 242383/242494 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 56927 event pairs, 1780 based on Foata normal form. 66/9158 useless extension candidates. Maximal degree in co-relation 66528. Up to 8234 conditions per place. [2024-06-27 22:12:07,451 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 391 selfloop transitions, 16 changer transitions 0/448 dead transitions. [2024-06-27 22:12:07,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 448 transitions, 8071 flow [2024-06-27 22:12:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:12:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:12:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:12:07,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-27 22:12:07,453 INFO L175 Difference]: Start difference. First operand has 193 places, 424 transitions, 7075 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:12:07,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 448 transitions, 8071 flow [2024-06-27 22:12:08,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 448 transitions, 7924 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-27 22:12:08,029 INFO L231 Difference]: Finished difference. Result has 197 places, 427 transitions, 6998 flow [2024-06-27 22:12:08,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6928, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6998, PETRI_PLACES=197, PETRI_TRANSITIONS=427} [2024-06-27 22:12:08,031 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-06-27 22:12:08,031 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 427 transitions, 6998 flow [2024-06-27 22:12:08,031 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) [2024-06-27 22:12:08,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:08,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:12:08,032 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:08,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:08,032 INFO L85 PathProgramCache]: Analyzing trace with hash -340393871, now seen corresponding path program 1 times [2024-06-27 22:12:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:08,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981184016] [2024-06-27 22:12:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:09,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:09,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981184016] [2024-06-27 22:12:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981184016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:09,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:09,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:09,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567425032] [2024-06-27 22:12:09,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:09,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:10,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:10,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 427 transitions, 6998 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:10,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:10,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:10,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:12,401 INFO L124 PetriNetUnfolderBase]: 6071/9494 cut-off events. [2024-06-27 22:12:12,402 INFO L125 PetriNetUnfolderBase]: For 278120/278157 co-relation queries the response was YES. [2024-06-27 22:12:12,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72886 conditions, 9494 events. 6071/9494 cut-off events. For 278120/278157 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 59632 event pairs, 1439 based on Foata normal form. 20/9147 useless extension candidates. Maximal degree in co-relation 72795. Up to 7540 conditions per place. [2024-06-27 22:12:12,509 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 379 selfloop transitions, 121 changer transitions 0/518 dead transitions. [2024-06-27 22:12:12,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 518 transitions, 8943 flow [2024-06-27 22:12:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 22:12:12,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 22:12:12,518 INFO L175 Difference]: Start difference. First operand has 197 places, 427 transitions, 6998 flow. Second operand 10 states and 257 transitions. [2024-06-27 22:12:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 518 transitions, 8943 flow [2024-06-27 22:12:13,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 518 transitions, 8907 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:12:13,067 INFO L231 Difference]: Finished difference. Result has 205 places, 441 transitions, 7525 flow [2024-06-27 22:12:13,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6962, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7525, PETRI_PLACES=205, PETRI_TRANSITIONS=441} [2024-06-27 22:12:13,073 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-27 22:12:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 441 transitions, 7525 flow [2024-06-27 22:12:13,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:13,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:13,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:12:13,074 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1718915625, now seen corresponding path program 2 times [2024-06-27 22:12:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821133343] [2024-06-27 22:12:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821133343] [2024-06-27 22:12:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821133343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:15,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:15,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971528637] [2024-06-27 22:12:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:15,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 441 transitions, 7525 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:15,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:15,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:17,875 INFO L124 PetriNetUnfolderBase]: 6244/9871 cut-off events. [2024-06-27 22:12:17,875 INFO L125 PetriNetUnfolderBase]: For 313746/313774 co-relation queries the response was YES. [2024-06-27 22:12:17,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77466 conditions, 9871 events. 6244/9871 cut-off events. For 313746/313774 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 63105 event pairs, 1582 based on Foata normal form. 25/9523 useless extension candidates. Maximal degree in co-relation 77371. Up to 8118 conditions per place. [2024-06-27 22:12:18,008 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 377 selfloop transitions, 121 changer transitions 0/516 dead transitions. [2024-06-27 22:12:18,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 516 transitions, 9197 flow [2024-06-27 22:12:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:12:18,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 22:12:18,010 INFO L175 Difference]: Start difference. First operand has 205 places, 441 transitions, 7525 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:12:18,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 516 transitions, 9197 flow [2024-06-27 22:12:18,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 516 transitions, 9078 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:18,875 INFO L231 Difference]: Finished difference. Result has 211 places, 443 transitions, 7763 flow [2024-06-27 22:12:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7410, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7763, PETRI_PLACES=211, PETRI_TRANSITIONS=443} [2024-06-27 22:12:18,876 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-27 22:12:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 443 transitions, 7763 flow [2024-06-27 22:12:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:18,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:18,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:12:18,876 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash -337536911, now seen corresponding path program 3 times [2024-06-27 22:12:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:18,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401427726] [2024-06-27 22:12:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:20,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:20,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401427726] [2024-06-27 22:12:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401427726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:20,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:20,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52144725] [2024-06-27 22:12:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:20,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:21,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:21,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 443 transitions, 7763 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:21,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:21,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:21,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:23,837 INFO L124 PetriNetUnfolderBase]: 6241/9846 cut-off events. [2024-06-27 22:12:23,837 INFO L125 PetriNetUnfolderBase]: For 309805/309833 co-relation queries the response was YES. [2024-06-27 22:12:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77833 conditions, 9846 events. 6241/9846 cut-off events. For 309805/309833 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 62775 event pairs, 1550 based on Foata normal form. 9/9485 useless extension candidates. Maximal degree in co-relation 77735. Up to 8488 conditions per place. [2024-06-27 22:12:23,942 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 380 selfloop transitions, 104 changer transitions 0/502 dead transitions. [2024-06-27 22:12:23,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 502 transitions, 9275 flow [2024-06-27 22:12:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:12:23,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 22:12:23,944 INFO L175 Difference]: Start difference. First operand has 211 places, 443 transitions, 7763 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:12:23,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 502 transitions, 9275 flow [2024-06-27 22:12:24,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 502 transitions, 9032 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:24,583 INFO L231 Difference]: Finished difference. Result has 214 places, 455 transitions, 8053 flow [2024-06-27 22:12:24,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7528, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8053, PETRI_PLACES=214, PETRI_TRANSITIONS=455} [2024-06-27 22:12:24,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 22:12:24,584 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 455 transitions, 8053 flow [2024-06-27 22:12:24,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:24,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:24,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:24,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:12:24,585 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:24,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1600643247, now seen corresponding path program 1 times [2024-06-27 22:12:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696868301] [2024-06-27 22:12:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:26,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:26,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696868301] [2024-06-27 22:12:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696868301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744726795] [2024-06-27 22:12:26,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:26,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:26,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:26,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:26,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 455 transitions, 8053 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:26,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:26,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:26,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:28,735 INFO L124 PetriNetUnfolderBase]: 6653/10336 cut-off events. [2024-06-27 22:12:28,735 INFO L125 PetriNetUnfolderBase]: For 317055/317062 co-relation queries the response was YES. [2024-06-27 22:12:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80840 conditions, 10336 events. 6653/10336 cut-off events. For 317055/317062 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 64263 event pairs, 1708 based on Foata normal form. 10/10155 useless extension candidates. Maximal degree in co-relation 80740. Up to 9068 conditions per place. [2024-06-27 22:12:28,865 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 426 selfloop transitions, 81 changer transitions 0/517 dead transitions. [2024-06-27 22:12:28,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 517 transitions, 9766 flow [2024-06-27 22:12:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:12:28,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:12:28,867 INFO L175 Difference]: Start difference. First operand has 214 places, 455 transitions, 8053 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:12:28,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 517 transitions, 9766 flow [2024-06-27 22:12:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 517 transitions, 9519 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:29,784 INFO L231 Difference]: Finished difference. Result has 220 places, 468 transitions, 8316 flow [2024-06-27 22:12:29,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7806, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8316, PETRI_PLACES=220, PETRI_TRANSITIONS=468} [2024-06-27 22:12:29,785 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-06-27 22:12:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 468 transitions, 8316 flow [2024-06-27 22:12:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:29,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:12:29,786 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:29,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1600827945, now seen corresponding path program 4 times [2024-06-27 22:12:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:29,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010538665] [2024-06-27 22:12:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010538665] [2024-06-27 22:12:31,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010538665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:31,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:31,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:31,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038118725] [2024-06-27 22:12:31,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:31,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:31,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:31,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 468 transitions, 8316 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:31,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:31,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:31,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:34,343 INFO L124 PetriNetUnfolderBase]: 6603/10454 cut-off events. [2024-06-27 22:12:34,343 INFO L125 PetriNetUnfolderBase]: For 363215/363235 co-relation queries the response was YES. [2024-06-27 22:12:34,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84672 conditions, 10454 events. 6603/10454 cut-off events. For 363215/363235 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 67712 event pairs, 1561 based on Foata normal form. 29/10037 useless extension candidates. Maximal degree in co-relation 84568. Up to 8115 conditions per place. [2024-06-27 22:12:34,490 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 368 selfloop transitions, 172 changer transitions 0/560 dead transitions. [2024-06-27 22:12:34,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 560 transitions, 10751 flow [2024-06-27 22:12:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:12:34,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:12:34,492 INFO L175 Difference]: Start difference. First operand has 220 places, 468 transitions, 8316 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:12:34,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 560 transitions, 10751 flow [2024-06-27 22:12:35,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 560 transitions, 10522 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:35,229 INFO L231 Difference]: Finished difference. Result has 227 places, 488 transitions, 9109 flow [2024-06-27 22:12:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9109, PETRI_PLACES=227, PETRI_TRANSITIONS=488} [2024-06-27 22:12:35,230 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-06-27 22:12:35,230 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 488 transitions, 9109 flow [2024-06-27 22:12:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:35,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:12:35,230 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:35,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -131672471, now seen corresponding path program 1 times [2024-06-27 22:12:35,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:35,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001879302] [2024-06-27 22:12:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001879302] [2024-06-27 22:12:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001879302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:36,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:12:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492689476] [2024-06-27 22:12:36,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:36,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:12:36,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:12:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:12:36,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:36,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 488 transitions, 9109 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:36,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:36,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:36,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:39,033 INFO L124 PetriNetUnfolderBase]: 7091/11315 cut-off events. [2024-06-27 22:12:39,033 INFO L125 PetriNetUnfolderBase]: For 375951/376056 co-relation queries the response was YES. [2024-06-27 22:12:39,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88820 conditions, 11315 events. 7091/11315 cut-off events. For 375951/376056 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 74117 event pairs, 2093 based on Foata normal form. 59/11109 useless extension candidates. Maximal degree in co-relation 88713. Up to 9876 conditions per place. [2024-06-27 22:12:39,197 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 434 selfloop transitions, 40 changer transitions 0/521 dead transitions. [2024-06-27 22:12:39,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 521 transitions, 10424 flow [2024-06-27 22:12:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:12:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:12:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:12:39,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:12:39,199 INFO L175 Difference]: Start difference. First operand has 227 places, 488 transitions, 9109 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:12:39,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 521 transitions, 10424 flow [2024-06-27 22:12:40,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 521 transitions, 10197 flow, removed 104 selfloop flow, removed 2 redundant places. [2024-06-27 22:12:40,607 INFO L231 Difference]: Finished difference. Result has 232 places, 498 transitions, 9126 flow [2024-06-27 22:12:40,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9126, PETRI_PLACES=232, PETRI_TRANSITIONS=498} [2024-06-27 22:12:40,608 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-06-27 22:12:40,608 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 498 transitions, 9126 flow [2024-06-27 22:12:40,608 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) [2024-06-27 22:12:40,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:40,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:40,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:12:40,609 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:40,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -967210379, now seen corresponding path program 1 times [2024-06-27 22:12:40,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:40,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432417907] [2024-06-27 22:12:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:42,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432417907] [2024-06-27 22:12:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432417907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:42,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:42,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620272929] [2024-06-27 22:12:42,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:42,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:42,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:42,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 498 transitions, 9126 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:42,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:42,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:42,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:45,037 INFO L124 PetriNetUnfolderBase]: 7145/11332 cut-off events. [2024-06-27 22:12:45,037 INFO L125 PetriNetUnfolderBase]: For 380993/381005 co-relation queries the response was YES. [2024-06-27 22:12:45,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91054 conditions, 11332 events. 7145/11332 cut-off events. For 380993/381005 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 73244 event pairs, 1851 based on Foata normal form. 2/11070 useless extension candidates. Maximal degree in co-relation 90943. Up to 9801 conditions per place. [2024-06-27 22:12:45,201 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 507 selfloop transitions, 43 changer transitions 0/563 dead transitions. [2024-06-27 22:12:45,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 563 transitions, 11063 flow [2024-06-27 22:12:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:12:45,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:12:45,206 INFO L175 Difference]: Start difference. First operand has 232 places, 498 transitions, 9126 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:12:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 563 transitions, 11063 flow [2024-06-27 22:12:46,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 563 transitions, 11018 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 22:12:46,309 INFO L231 Difference]: Finished difference. Result has 241 places, 506 transitions, 9363 flow [2024-06-27 22:12:46,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9081, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9363, PETRI_PLACES=241, PETRI_TRANSITIONS=506} [2024-06-27 22:12:46,310 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 22:12:46,310 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 506 transitions, 9363 flow [2024-06-27 22:12:46,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:46,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:46,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:12:46,311 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:46,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:46,311 INFO L85 PathProgramCache]: Analyzing trace with hash 374130439, now seen corresponding path program 2 times [2024-06-27 22:12:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:46,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542620880] [2024-06-27 22:12:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542620880] [2024-06-27 22:12:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542620880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:47,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8134156] [2024-06-27 22:12:47,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:47,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:48,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:48,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 506 transitions, 9363 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:48,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:48,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:48,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:50,790 INFO L124 PetriNetUnfolderBase]: 7277/11538 cut-off events. [2024-06-27 22:12:50,791 INFO L125 PetriNetUnfolderBase]: For 399377/399381 co-relation queries the response was YES. [2024-06-27 22:12:50,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94026 conditions, 11538 events. 7277/11538 cut-off events. For 399377/399381 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 74727 event pairs, 1844 based on Foata normal form. 2/11269 useless extension candidates. Maximal degree in co-relation 93911. Up to 9887 conditions per place. [2024-06-27 22:12:50,936 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 529 selfloop transitions, 59 changer transitions 0/601 dead transitions. [2024-06-27 22:12:50,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 601 transitions, 11950 flow [2024-06-27 22:12:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 22:12:50,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:12:50,940 INFO L175 Difference]: Start difference. First operand has 241 places, 506 transitions, 9363 flow. Second operand 9 states and 207 transitions. [2024-06-27 22:12:50,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 601 transitions, 11950 flow [2024-06-27 22:12:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 601 transitions, 11687 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:52,029 INFO L231 Difference]: Finished difference. Result has 245 places, 528 transitions, 9780 flow [2024-06-27 22:12:52,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9158, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9780, PETRI_PLACES=245, PETRI_TRANSITIONS=528} [2024-06-27 22:12:52,030 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 22:12:52,030 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 528 transitions, 9780 flow [2024-06-27 22:12:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:52,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:52,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:12:52,031 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:52,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 374137197, now seen corresponding path program 2 times [2024-06-27 22:12:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641063992] [2024-06-27 22:12:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:52,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:53,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:53,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641063992] [2024-06-27 22:12:53,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641063992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:53,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:53,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443903675] [2024-06-27 22:12:53,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:53,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:53,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:53,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:54,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:12:54,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 528 transitions, 9780 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:54,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:54,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:12:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:57,015 INFO L124 PetriNetUnfolderBase]: 7334/11615 cut-off events. [2024-06-27 22:12:57,015 INFO L125 PetriNetUnfolderBase]: For 409542/409546 co-relation queries the response was YES. [2024-06-27 22:12:57,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95717 conditions, 11615 events. 7334/11615 cut-off events. For 409542/409546 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 75144 event pairs, 1857 based on Foata normal form. 4/11350 useless extension candidates. Maximal degree in co-relation 95600. Up to 10201 conditions per place. [2024-06-27 22:12:57,196 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 526 selfloop transitions, 53 changer transitions 0/592 dead transitions. [2024-06-27 22:12:57,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 592 transitions, 11646 flow [2024-06-27 22:12:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-27 22:12:57,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-06-27 22:12:57,202 INFO L175 Difference]: Start difference. First operand has 245 places, 528 transitions, 9780 flow. Second operand 10 states and 222 transitions. [2024-06-27 22:12:57,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 592 transitions, 11646 flow [2024-06-27 22:12:58,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 592 transitions, 11524 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:12:58,516 INFO L231 Difference]: Finished difference. Result has 251 places, 543 transitions, 10116 flow [2024-06-27 22:12:58,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9670, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10116, PETRI_PLACES=251, PETRI_TRANSITIONS=543} [2024-06-27 22:12:58,517 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-27 22:12:58,517 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 543 transitions, 10116 flow [2024-06-27 22:12:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:58,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:58,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:58,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:12:58,517 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash 373952499, now seen corresponding path program 5 times [2024-06-27 22:12:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:58,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573657872] [2024-06-27 22:12:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573657872] [2024-06-27 22:13:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573657872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:00,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:00,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485032061] [2024-06-27 22:13:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:00,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:00,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 543 transitions, 10116 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:00,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:00,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:00,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:03,471 INFO L124 PetriNetUnfolderBase]: 7611/12063 cut-off events. [2024-06-27 22:13:03,472 INFO L125 PetriNetUnfolderBase]: For 459207/459211 co-relation queries the response was YES. [2024-06-27 22:13:03,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100425 conditions, 12063 events. 7611/12063 cut-off events. For 459207/459211 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 78574 event pairs, 1867 based on Foata normal form. 24/11813 useless extension candidates. Maximal degree in co-relation 100305. Up to 10299 conditions per place. [2024-06-27 22:13:03,629 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 544 selfloop transitions, 67 changer transitions 0/624 dead transitions. [2024-06-27 22:13:03,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 624 transitions, 12335 flow [2024-06-27 22:13:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:13:03,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:13:03,643 INFO L175 Difference]: Start difference. First operand has 251 places, 543 transitions, 10116 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:13:03,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 624 transitions, 12335 flow [2024-06-27 22:13:04,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 624 transitions, 12181 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 22:13:04,867 INFO L231 Difference]: Finished difference. Result has 257 places, 569 transitions, 10646 flow [2024-06-27 22:13:04,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9962, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10646, PETRI_PLACES=257, PETRI_TRANSITIONS=569} [2024-06-27 22:13:04,868 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-06-27 22:13:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 569 transitions, 10646 flow [2024-06-27 22:13:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:04,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:04,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:13:04,869 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:04,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash 629737219, now seen corresponding path program 3 times [2024-06-27 22:13:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121563567] [2024-06-27 22:13:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:04,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:06,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121563567] [2024-06-27 22:13:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121563567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726972759] [2024-06-27 22:13:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:06,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:06,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:06,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 569 transitions, 10646 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:06,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:06,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:06,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:09,667 INFO L124 PetriNetUnfolderBase]: 7639/12098 cut-off events. [2024-06-27 22:13:09,668 INFO L125 PetriNetUnfolderBase]: For 474138/474142 co-relation queries the response was YES. [2024-06-27 22:13:09,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103155 conditions, 12098 events. 7639/12098 cut-off events. For 474138/474142 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 78816 event pairs, 1932 based on Foata normal form. 2/11827 useless extension candidates. Maximal degree in co-relation 103031. Up to 10763 conditions per place. [2024-06-27 22:13:09,869 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 580 selfloop transitions, 38 changer transitions 0/631 dead transitions. [2024-06-27 22:13:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 631 transitions, 12674 flow [2024-06-27 22:13:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 22:13:09,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:13:09,880 INFO L175 Difference]: Start difference. First operand has 257 places, 569 transitions, 10646 flow. Second operand 9 states and 207 transitions. [2024-06-27 22:13:09,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 631 transitions, 12674 flow [2024-06-27 22:13:11,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 631 transitions, 12470 flow, removed 96 selfloop flow, removed 2 redundant places. [2024-06-27 22:13:11,425 INFO L231 Difference]: Finished difference. Result has 267 places, 589 transitions, 11046 flow [2024-06-27 22:13:11,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11046, PETRI_PLACES=267, PETRI_TRANSITIONS=589} [2024-06-27 22:13:11,426 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-27 22:13:11,426 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 589 transitions, 11046 flow [2024-06-27 22:13:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:11,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:11,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:13:11,427 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:11,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1196988711, now seen corresponding path program 4 times [2024-06-27 22:13:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:11,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14035742] [2024-06-27 22:13:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14035742] [2024-06-27 22:13:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14035742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:13,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301190278] [2024-06-27 22:13:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:13,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:13,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 589 transitions, 11046 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:13,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:13,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:13,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:16,937 INFO L124 PetriNetUnfolderBase]: 7624/12103 cut-off events. [2024-06-27 22:13:16,937 INFO L125 PetriNetUnfolderBase]: For 461602/461606 co-relation queries the response was YES. [2024-06-27 22:13:17,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101506 conditions, 12103 events. 7624/12103 cut-off events. For 461602/461606 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 79053 event pairs, 1893 based on Foata normal form. 4/11823 useless extension candidates. Maximal degree in co-relation 101377. Up to 10586 conditions per place. [2024-06-27 22:13:17,113 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 582 selfloop transitions, 59 changer transitions 0/654 dead transitions. [2024-06-27 22:13:17,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 654 transitions, 13202 flow [2024-06-27 22:13:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:13:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:13:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:13:17,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 22:13:17,115 INFO L175 Difference]: Start difference. First operand has 267 places, 589 transitions, 11046 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:13:17,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 654 transitions, 13202 flow [2024-06-27 22:13:18,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 654 transitions, 12894 flow, removed 131 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:18,729 INFO L231 Difference]: Finished difference. Result has 272 places, 607 transitions, 11358 flow [2024-06-27 22:13:18,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10828, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11358, PETRI_PLACES=272, PETRI_TRANSITIONS=607} [2024-06-27 22:13:18,731 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 22:13:18,731 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 607 transitions, 11358 flow [2024-06-27 22:13:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:18,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:18,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:13:18,731 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:18,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 380393307, now seen corresponding path program 3 times [2024-06-27 22:13:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639057643] [2024-06-27 22:13:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639057643] [2024-06-27 22:13:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639057643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:20,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:20,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:20,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049818830] [2024-06-27 22:13:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:20,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:20,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 607 transitions, 11358 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:20,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:20,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:20,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:24,057 INFO L124 PetriNetUnfolderBase]: 7762/12289 cut-off events. [2024-06-27 22:13:24,057 INFO L125 PetriNetUnfolderBase]: For 477343/477347 co-relation queries the response was YES. [2024-06-27 22:13:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103657 conditions, 12289 events. 7762/12289 cut-off events. For 477343/477347 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 80331 event pairs, 1928 based on Foata normal form. 4/12015 useless extension candidates. Maximal degree in co-relation 103526. Up to 10803 conditions per place. [2024-06-27 22:13:24,217 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 597 selfloop transitions, 59 changer transitions 0/669 dead transitions. [2024-06-27 22:13:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 669 transitions, 13390 flow [2024-06-27 22:13:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:13:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:13:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:13:24,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:13:24,219 INFO L175 Difference]: Start difference. First operand has 272 places, 607 transitions, 11358 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:13:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 669 transitions, 13390 flow [2024-06-27 22:13:25,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 669 transitions, 13304 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 22:13:25,644 INFO L231 Difference]: Finished difference. Result has 279 places, 628 transitions, 11844 flow [2024-06-27 22:13:25,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11272, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11844, PETRI_PLACES=279, PETRI_TRANSITIONS=628} [2024-06-27 22:13:25,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-27 22:13:25,645 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 628 transitions, 11844 flow [2024-06-27 22:13:25,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:25,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:25,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:25,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:13:25,645 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:25,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 629974617, now seen corresponding path program 4 times [2024-06-27 22:13:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709983957] [2024-06-27 22:13:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709983957] [2024-06-27 22:13:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709983957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:27,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:27,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562634848] [2024-06-27 22:13:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:27,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:27,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:27,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:27,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 628 transitions, 11844 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:27,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:27,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:27,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:31,235 INFO L124 PetriNetUnfolderBase]: 7804/12393 cut-off events. [2024-06-27 22:13:31,235 INFO L125 PetriNetUnfolderBase]: For 491745/491749 co-relation queries the response was YES. [2024-06-27 22:13:31,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105431 conditions, 12393 events. 7804/12393 cut-off events. For 491745/491749 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 81272 event pairs, 1917 based on Foata normal form. 4/12101 useless extension candidates. Maximal degree in co-relation 105296. Up to 10896 conditions per place. [2024-06-27 22:13:31,410 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 620 selfloop transitions, 52 changer transitions 0/685 dead transitions. [2024-06-27 22:13:31,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 685 transitions, 13910 flow [2024-06-27 22:13:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:13:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:13:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:13:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 22:13:31,411 INFO L175 Difference]: Start difference. First operand has 279 places, 628 transitions, 11844 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:13:31,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 685 transitions, 13910 flow [2024-06-27 22:13:32,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 685 transitions, 13720 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:32,880 INFO L231 Difference]: Finished difference. Result has 284 places, 643 transitions, 12229 flow [2024-06-27 22:13:32,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11718, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12229, PETRI_PLACES=284, PETRI_TRANSITIONS=643} [2024-06-27 22:13:32,881 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-27 22:13:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 643 transitions, 12229 flow [2024-06-27 22:13:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:32,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:13:32,882 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:32,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1196662963, now seen corresponding path program 5 times [2024-06-27 22:13:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670632159] [2024-06-27 22:13:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670632159] [2024-06-27 22:13:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670632159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:34,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409477222] [2024-06-27 22:13:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:34,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:34,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:34,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 643 transitions, 12229 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:34,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:34,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:34,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:38,423 INFO L124 PetriNetUnfolderBase]: 7849/12474 cut-off events. [2024-06-27 22:13:38,423 INFO L125 PetriNetUnfolderBase]: For 519146/519150 co-relation queries the response was YES. [2024-06-27 22:13:38,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107293 conditions, 12474 events. 7849/12474 cut-off events. For 519146/519150 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 81968 event pairs, 1894 based on Foata normal form. 4/12179 useless extension candidates. Maximal degree in co-relation 107155. Up to 11014 conditions per place. [2024-06-27 22:13:38,604 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 642 selfloop transitions, 32 changer transitions 0/687 dead transitions. [2024-06-27 22:13:38,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 687 transitions, 14003 flow [2024-06-27 22:13:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 22:13:38,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47754137115839246 [2024-06-27 22:13:38,606 INFO L175 Difference]: Start difference. First operand has 284 places, 643 transitions, 12229 flow. Second operand 9 states and 202 transitions. [2024-06-27 22:13:38,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 687 transitions, 14003 flow [2024-06-27 22:13:40,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 687 transitions, 13772 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-27 22:13:40,208 INFO L231 Difference]: Finished difference. Result has 289 places, 648 transitions, 12223 flow [2024-06-27 22:13:40,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11998, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12223, PETRI_PLACES=289, PETRI_TRANSITIONS=648} [2024-06-27 22:13:40,209 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-27 22:13:40,209 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 648 transitions, 12223 flow [2024-06-27 22:13:40,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:40,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:40,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:40,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:13:40,210 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:40,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash -119322071, now seen corresponding path program 2 times [2024-06-27 22:13:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130593276] [2024-06-27 22:13:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:40,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130593276] [2024-06-27 22:13:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130593276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:41,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:41,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:13:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132327974] [2024-06-27 22:13:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:41,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:13:41,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:41,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:13:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:13:41,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:13:41,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 648 transitions, 12223 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:41,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:41,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:13:41,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:45,034 INFO L124 PetriNetUnfolderBase]: 7782/12417 cut-off events. [2024-06-27 22:13:45,034 INFO L125 PetriNetUnfolderBase]: For 517316/517435 co-relation queries the response was YES. [2024-06-27 22:13:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104931 conditions, 12417 events. 7782/12417 cut-off events. For 517316/517435 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 82305 event pairs, 2109 based on Foata normal form. 77/12206 useless extension candidates. Maximal degree in co-relation 104792. Up to 10867 conditions per place. [2024-06-27 22:13:45,227 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 571 selfloop transitions, 15 changer transitions 0/664 dead transitions. [2024-06-27 22:13:45,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 664 transitions, 13531 flow [2024-06-27 22:13:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:13:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:13:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 22:13:45,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-06-27 22:13:45,229 INFO L175 Difference]: Start difference. First operand has 289 places, 648 transitions, 12223 flow. Second operand 6 states and 133 transitions. [2024-06-27 22:13:45,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 664 transitions, 13531 flow [2024-06-27 22:13:46,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 664 transitions, 13365 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 22:13:46,861 INFO L231 Difference]: Finished difference. Result has 290 places, 648 transitions, 12093 flow [2024-06-27 22:13:46,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12057, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12093, PETRI_PLACES=290, PETRI_TRANSITIONS=648} [2024-06-27 22:13:46,863 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-06-27 22:13:46,863 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 648 transitions, 12093 flow [2024-06-27 22:13:46,864 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) [2024-06-27 22:13:46,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:46,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:13:46,864 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1441212703, now seen corresponding path program 6 times [2024-06-27 22:13:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281211509] [2024-06-27 22:13:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat