./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.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/safe009_power.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/safe009_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_power.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 22:41:51,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:41:51,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:41:51,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:41:51,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:41:51,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:41:51,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:41:51,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:41:51,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:41:51,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:41:51,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:41:51,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:41:51,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:41:51,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:41:51,185 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:41:51,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:41:51,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:41:51,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:41:51,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:41:51,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:41:51,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:41:51,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:41:51,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:41:51,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:41:51,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:41:51,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:41:51,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:41:51,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:41:51,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:41:51,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:41:51,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:41:51,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:41:51,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:41:51,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:41:51,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:41:51,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:41:51,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:41:51,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:41:51,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:41:51,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:41:51,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:41:51,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:41:51,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:41:51,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:41:51,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-27 22:41:52,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:41:52,707 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:41:52,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.oepc.i [2024-06-27 22:41:52,731 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b161ab1a3/83a94240f38d4a919f4e2f77118e2ce9/FLAG99e4adc24 [2024-06-27 22:41:52,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b161ab1a3/83a94240f38d4a919f4e2f77118e2ce9 [2024-06-27 22:41:52,749 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:41:52,750 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:41:52,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_power.oepc.yml/witness.yml [2024-06-27 22:41:52,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:41:52,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:41:52,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:41:52,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:41:52,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:41:52,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:41:52" (1/2) ... [2024-06-27 22:41:52,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a84461d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:52, skipping insertion in model container [2024-06-27 22:41:52,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:41:52" (1/2) ... [2024-06-27 22:41:52,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@405c5c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:52, skipping insertion in model container [2024-06-27 22:41:52,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:52" (2/2) ... [2024-06-27 22:41:52,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a84461d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:41:52, skipping insertion in model container [2024-06-27 22:41:52,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:52" (2/2) ... [2024-06-27 22:41:52,842 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:41:52,869 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:41:52,871 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:41:52,871 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:41:52,871 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:41:52,871 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:41:52,872 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-27 22:41:52,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:41:53,045 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/safe009_power.oepc.i[995,1008] [2024-06-27 22:41:53,215 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:41:53,229 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:41:53,259 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/safe009_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:41:53,393 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:41:53,465 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:41:53,466 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:41:53 WrapperNode [2024-06-27 22:41:53,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:41:53,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:41:53,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:41:53,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:41:53,473 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,512 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,552 INFO L138 Inliner]: procedures = 175, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 177 [2024-06-27 22:41:53,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:41:53,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:41:53,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:41:53,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:41:53,567 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,568 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,573 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,592 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-27 22:41:53,592 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,592 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,615 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,617 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,623 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,632 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:41:53,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:41:53,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:41:53,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:41:53,645 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 10:41:53" (1/1) ... [2024-06-27 22:41:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:41:53,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:41:53,697 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 22:41:53,712 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 22:41:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:41:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:41:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:41:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:41:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:41:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:41:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:41:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:41:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:41:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:41:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:41:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:41:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:41:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:41:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:41:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:41:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:41:53,746 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 22:41:53,882 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:41:53,884 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:41:54,411 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:41:54,411 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:41:54,727 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:41:54,727 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:41:54,727 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:41:54 BoogieIcfgContainer [2024-06-27 22:41:54,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:41:54,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:41:54,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:41:54,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:41:54,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:41:52" (1/4) ... [2024-06-27 22:41:54,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b3255c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:41:54, skipping insertion in model container [2024-06-27 22:41:54,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:52" (2/4) ... [2024-06-27 22:41:54,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b3255c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:41:54, skipping insertion in model container [2024-06-27 22:41:54,734 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 10:41:53" (3/4) ... [2024-06-27 22:41:54,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b3255c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:41:54, skipping insertion in model container [2024-06-27 22:41:54,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:41:54" (4/4) ... [2024-06-27 22:41:54,736 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.oepc.i [2024-06-27 22:41:54,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:41:54,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:41:54,754 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:41:54,846 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:41:54,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:41:54,914 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:41:54,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:41:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:41:54,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:41:54,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-27 22:41:54,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:41:54,940 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;@551d0c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:41:54,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:41:54,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:41:54,944 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:41:54,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:41:54,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:54,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:41:54,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:54,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 709881868, now seen corresponding path program 1 times [2024-06-27 22:41:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244861157] [2024-06-27 22:41:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:56,853 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 22:41:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244861157] [2024-06-27 22:41:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244861157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:41:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146696967] [2024-06-27 22:41:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:41:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:41:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:41:56,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:41:56,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 22:41:56,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:56,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:41:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:57,839 INFO L124 PetriNetUnfolderBase]: 2790/4333 cut-off events. [2024-06-27 22:41:57,839 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:41:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 4333 events. 2790/4333 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24159 event pairs, 1780 based on Foata normal form. 0/4176 useless extension candidates. Maximal degree in co-relation 8451. Up to 4049 conditions per place. [2024-06-27 22:41:57,862 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 22:41:57,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 227 flow [2024-06-27 22:41:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:41:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:41:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 22:41:57,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-27 22:41:57,873 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 88 transitions. [2024-06-27 22:41:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 227 flow [2024-06-27 22:41:57,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:41:57,881 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-27 22:41:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-27 22:41:57,885 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-27 22:41:57,885 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-27 22:41:57,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 22:41:57,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:57,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:41:57,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:57,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash -703297013, now seen corresponding path program 1 times [2024-06-27 22:41:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807128236] [2024-06-27 22:41:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:57,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807128236] [2024-06-27 22:42:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807128236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:00,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:00,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:42:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680929240] [2024-06-27 22:42:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:00,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:42:00,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:42:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:42:00,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:42:00,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:00,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:00,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:42:00,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:01,410 INFO L124 PetriNetUnfolderBase]: 2784/4127 cut-off events. [2024-06-27 22:42:01,410 INFO L125 PetriNetUnfolderBase]: For 705/709 co-relation queries the response was YES. [2024-06-27 22:42:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4127 events. 2784/4127 cut-off events. For 705/709 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21772 event pairs, 1304 based on Foata normal form. 5/4128 useless extension candidates. Maximal degree in co-relation 9262. Up to 4007 conditions per place. [2024-06-27 22:42:01,428 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 61 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-27 22:42:01,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 355 flow [2024-06-27 22:42:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:42:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:42:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 22:42:01,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-27 22:42:01,430 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 119 transitions. [2024-06-27 22:42:01,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 355 flow [2024-06-27 22:42:01,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:01,432 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 186 flow [2024-06-27 22:42:01,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-27 22:42:01,433 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-27 22:42:01,433 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 186 flow [2024-06-27 22:42:01,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:01,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:01,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:01,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:42:01,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:01,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:01,434 INFO L85 PathProgramCache]: Analyzing trace with hash -327369990, now seen corresponding path program 1 times [2024-06-27 22:42:01,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:01,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336002385] [2024-06-27 22:42:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:01,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:03,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:03,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336002385] [2024-06-27 22:42:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336002385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:03,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:42:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29458372] [2024-06-27 22:42:03,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:03,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:42:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:42:03,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:42:03,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:03,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 22:42:03,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:03,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:03,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:05,282 INFO L124 PetriNetUnfolderBase]: 3373/4966 cut-off events. [2024-06-27 22:42:05,282 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2024-06-27 22:42:05,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 4966 events. 3373/4966 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26079 event pairs, 1214 based on Foata normal form. 3/4966 useless extension candidates. Maximal degree in co-relation 12445. Up to 4808 conditions per place. [2024-06-27 22:42:05,305 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 87 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-27 22:42:05,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 548 flow [2024-06-27 22:42:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 22:42:05,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:42:05,310 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 186 flow. Second operand 5 states and 145 transitions. [2024-06-27 22:42:05,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 548 flow [2024-06-27 22:42:05,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:05,319 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 305 flow [2024-06-27 22:42:05,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-06-27 22:42:05,320 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-27 22:42:05,320 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 305 flow [2024-06-27 22:42:05,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 22:42:05,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:05,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:05,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:42:05,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:05,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1069916903, now seen corresponding path program 1 times [2024-06-27 22:42:05,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:05,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712400920] [2024-06-27 22:42:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:08,254 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 22:42:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712400920] [2024-06-27 22:42:08,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712400920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:08,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:08,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:42:08,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107211742] [2024-06-27 22:42:08,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:08,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:42:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:42:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:42:08,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:08,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:08,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:08,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:08,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:09,548 INFO L124 PetriNetUnfolderBase]: 3364/4951 cut-off events. [2024-06-27 22:42:09,549 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-06-27 22:42:09,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13554 conditions, 4951 events. 3364/4951 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26040 event pairs, 847 based on Foata normal form. 6/4954 useless extension candidates. Maximal degree in co-relation 13534. Up to 4731 conditions per place. [2024-06-27 22:42:09,570 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 98 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-27 22:42:09,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 119 transitions, 669 flow [2024-06-27 22:42:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 22:42:09,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123188405797102 [2024-06-27 22:42:09,572 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 305 flow. Second operand 6 states and 169 transitions. [2024-06-27 22:42:09,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 119 transitions, 669 flow [2024-06-27 22:42:09,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 667 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:09,580 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 346 flow [2024-06-27 22:42:09,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 22:42:09,581 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2024-06-27 22:42:09,582 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 346 flow [2024-06-27 22:42:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:09,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:42:09,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:09,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1307199133, now seen corresponding path program 1 times [2024-06-27 22:42:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786899409] [2024-06-27 22:42:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:12,015 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 22:42:12,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786899409] [2024-06-27 22:42:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786899409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:42:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820656458] [2024-06-27 22:42:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:12,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:42:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:42:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:42:12,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:12,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:42:12,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:12,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:12,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:13,429 INFO L124 PetriNetUnfolderBase]: 3402/5242 cut-off events. [2024-06-27 22:42:13,429 INFO L125 PetriNetUnfolderBase]: For 6047/6053 co-relation queries the response was YES. [2024-06-27 22:42:13,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14654 conditions, 5242 events. 3402/5242 cut-off events. For 6047/6053 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29183 event pairs, 1300 based on Foata normal form. 8/5245 useless extension candidates. Maximal degree in co-relation 14630. Up to 4673 conditions per place. [2024-06-27 22:42:13,460 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 77 selfloop transitions, 20 changer transitions 0/103 dead transitions. [2024-06-27 22:42:13,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 697 flow [2024-06-27 22:42:13,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:42:13,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:42:13,465 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 346 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:42:13,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 697 flow [2024-06-27 22:42:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 662 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:13,478 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 469 flow [2024-06-27 22:42:13,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-06-27 22:42:13,480 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2024-06-27 22:42:13,480 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 469 flow [2024-06-27 22:42:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:42:13,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:13,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:13,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:42:13,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:13,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1610177379, now seen corresponding path program 1 times [2024-06-27 22:42:13,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:13,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53547510] [2024-06-27 22:42:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:13,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:16,832 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 22:42:16,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53547510] [2024-06-27 22:42:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53547510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:16,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783474297] [2024-06-27 22:42:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:16,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:16,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:16,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:16,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:16,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:16,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:18,197 INFO L124 PetriNetUnfolderBase]: 3460/5319 cut-off events. [2024-06-27 22:42:18,197 INFO L125 PetriNetUnfolderBase]: For 8856/8865 co-relation queries the response was YES. [2024-06-27 22:42:18,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17321 conditions, 5319 events. 3460/5319 cut-off events. For 8856/8865 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29437 event pairs, 1310 based on Foata normal form. 11/5326 useless extension candidates. Maximal degree in co-relation 17292. Up to 4723 conditions per place. [2024-06-27 22:42:18,224 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 81 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-27 22:42:18,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 109 transitions, 804 flow [2024-06-27 22:42:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:42:18,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:42:18,227 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 469 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:42:18,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 109 transitions, 804 flow [2024-06-27 22:42:18,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 800 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:18,236 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 566 flow [2024-06-27 22:42:18,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-06-27 22:42:18,236 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2024-06-27 22:42:18,237 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 566 flow [2024-06-27 22:42:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:18,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:42:18,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:18,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2029620712, now seen corresponding path program 1 times [2024-06-27 22:42:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571305701] [2024-06-27 22:42:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571305701] [2024-06-27 22:42:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571305701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:22,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:22,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217116412] [2024-06-27 22:42:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:22,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:22,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:22,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:22,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:22,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:24,379 INFO L124 PetriNetUnfolderBase]: 3491/5135 cut-off events. [2024-06-27 22:42:24,379 INFO L125 PetriNetUnfolderBase]: For 10803/10803 co-relation queries the response was YES. [2024-06-27 22:42:24,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18034 conditions, 5135 events. 3491/5135 cut-off events. For 10803/10803 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26952 event pairs, 1008 based on Foata normal form. 2/5134 useless extension candidates. Maximal degree in co-relation 18000. Up to 4859 conditions per place. [2024-06-27 22:42:24,449 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 141 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2024-06-27 22:42:24,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 176 transitions, 1225 flow [2024-06-27 22:42:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:42:24,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369565217391304 [2024-06-27 22:42:24,451 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 566 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:42:24,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 176 transitions, 1225 flow [2024-06-27 22:42:24,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 176 transitions, 1201 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:42:24,462 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 667 flow [2024-06-27 22:42:24,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=667, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 22:42:24,462 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2024-06-27 22:42:24,463 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 667 flow [2024-06-27 22:42:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:24,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:24,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:42:24,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1907491752, now seen corresponding path program 2 times [2024-06-27 22:42:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481654846] [2024-06-27 22:42:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:28,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481654846] [2024-06-27 22:42:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481654846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758482955] [2024-06-27 22:42:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:28,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:28,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 667 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:28,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:28,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:28,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:29,975 INFO L124 PetriNetUnfolderBase]: 3619/5472 cut-off events. [2024-06-27 22:42:29,976 INFO L125 PetriNetUnfolderBase]: For 15213/15236 co-relation queries the response was YES. [2024-06-27 22:42:29,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19947 conditions, 5472 events. 3619/5472 cut-off events. For 15213/15236 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 29601 event pairs, 1093 based on Foata normal form. 16/5481 useless extension candidates. Maximal degree in co-relation 19911. Up to 5034 conditions per place. [2024-06-27 22:42:30,005 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 103 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-27 22:42:30,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 141 transitions, 1179 flow [2024-06-27 22:42:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 22:42:30,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:42:30,007 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 667 flow. Second operand 7 states and 161 transitions. [2024-06-27 22:42:30,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 141 transitions, 1179 flow [2024-06-27 22:42:30,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 141 transitions, 1064 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:30,022 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 782 flow [2024-06-27 22:42:30,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-06-27 22:42:30,023 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2024-06-27 22:42:30,023 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 782 flow [2024-06-27 22:42:30,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:30,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:30,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:42:30,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:30,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1423496366, now seen corresponding path program 1 times [2024-06-27 22:42:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211492533] [2024-06-27 22:42:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211492533] [2024-06-27 22:42:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211492533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:34,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:34,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470569077] [2024-06-27 22:42:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:34,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:34,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 782 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:34,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:34,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:34,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:35,617 INFO L124 PetriNetUnfolderBase]: 3947/5953 cut-off events. [2024-06-27 22:42:35,617 INFO L125 PetriNetUnfolderBase]: For 17114/17135 co-relation queries the response was YES. [2024-06-27 22:42:35,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21838 conditions, 5953 events. 3947/5953 cut-off events. For 17114/17135 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 32359 event pairs, 1063 based on Foata normal form. 18/5964 useless extension candidates. Maximal degree in co-relation 21802. Up to 5261 conditions per place. [2024-06-27 22:42:35,646 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 123 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-27 22:42:35,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 166 transitions, 1369 flow [2024-06-27 22:42:35,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:42:35,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:42:35,648 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 782 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:42:35,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 166 transitions, 1369 flow [2024-06-27 22:42:35,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 166 transitions, 1328 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:42:35,665 INFO L231 Difference]: Finished difference. Result has 89 places, 113 transitions, 933 flow [2024-06-27 22:42:35,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=933, PETRI_PLACES=89, PETRI_TRANSITIONS=113} [2024-06-27 22:42:35,665 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-06-27 22:42:35,666 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 113 transitions, 933 flow [2024-06-27 22:42:35,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:35,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:35,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:35,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:42:35,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:35,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1624102016, now seen corresponding path program 2 times [2024-06-27 22:42:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683559088] [2024-06-27 22:42:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683559088] [2024-06-27 22:42:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683559088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:39,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:39,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756642217] [2024-06-27 22:42:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:39,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:39,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 113 transitions, 933 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:39,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:39,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:39,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:41,061 INFO L124 PetriNetUnfolderBase]: 4314/6483 cut-off events. [2024-06-27 22:42:41,061 INFO L125 PetriNetUnfolderBase]: For 25812/25893 co-relation queries the response was YES. [2024-06-27 22:42:41,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26788 conditions, 6483 events. 4314/6483 cut-off events. For 25812/25893 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 35628 event pairs, 1175 based on Foata normal form. 46/6519 useless extension candidates. Maximal degree in co-relation 26749. Up to 4824 conditions per place. [2024-06-27 22:42:41,097 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 125 selfloop transitions, 46 changer transitions 0/177 dead transitions. [2024-06-27 22:42:41,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 177 transitions, 1649 flow [2024-06-27 22:42:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:42:41,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:42:41,100 INFO L175 Difference]: Start difference. First operand has 89 places, 113 transitions, 933 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:42:41,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 177 transitions, 1649 flow [2024-06-27 22:42:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 177 transitions, 1573 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:41,128 INFO L231 Difference]: Finished difference. Result has 93 places, 129 transitions, 1158 flow [2024-06-27 22:42:41,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1158, PETRI_PLACES=93, PETRI_TRANSITIONS=129} [2024-06-27 22:42:41,129 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2024-06-27 22:42:41,129 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 129 transitions, 1158 flow [2024-06-27 22:42:41,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:41,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:41,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:42:41,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:41,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1932815558, now seen corresponding path program 3 times [2024-06-27 22:42:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388496406] [2024-06-27 22:42:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388496406] [2024-06-27 22:42:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388496406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:43,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:43,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601515426] [2024-06-27 22:42:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:43,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:43,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:43,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:43,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 129 transitions, 1158 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:43,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:43,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:43,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:45,329 INFO L124 PetriNetUnfolderBase]: 4855/7229 cut-off events. [2024-06-27 22:42:45,329 INFO L125 PetriNetUnfolderBase]: For 35956/36053 co-relation queries the response was YES. [2024-06-27 22:42:45,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33016 conditions, 7229 events. 4855/7229 cut-off events. For 35956/36053 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 39739 event pairs, 1104 based on Foata normal form. 95/7314 useless extension candidates. Maximal degree in co-relation 32972. Up to 5386 conditions per place. [2024-06-27 22:42:45,377 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 125 selfloop transitions, 63 changer transitions 0/194 dead transitions. [2024-06-27 22:42:45,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 194 transitions, 1929 flow [2024-06-27 22:42:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:42:45,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:42:45,444 INFO L175 Difference]: Start difference. First operand has 93 places, 129 transitions, 1158 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:42:45,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 194 transitions, 1929 flow [2024-06-27 22:42:45,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 194 transitions, 1865 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:45,491 INFO L231 Difference]: Finished difference. Result has 100 places, 146 transitions, 1490 flow [2024-06-27 22:42:45,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1490, PETRI_PLACES=100, PETRI_TRANSITIONS=146} [2024-06-27 22:42:45,491 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2024-06-27 22:42:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 146 transitions, 1490 flow [2024-06-27 22:42:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 22:42:45,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:45,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:42:45,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:45,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1624110944, now seen corresponding path program 1 times [2024-06-27 22:42:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137520739] [2024-06-27 22:42:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:49,039 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 22:42:49,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137520739] [2024-06-27 22:42:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137520739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576579341] [2024-06-27 22:42:49,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:49,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 146 transitions, 1490 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:42:49,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:51,003 INFO L124 PetriNetUnfolderBase]: 5015/7612 cut-off events. [2024-06-27 22:42:51,003 INFO L125 PetriNetUnfolderBase]: For 46401/46413 co-relation queries the response was YES. [2024-06-27 22:42:51,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37290 conditions, 7612 events. 5015/7612 cut-off events. For 46401/46413 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 43320 event pairs, 1338 based on Foata normal form. 24/7632 useless extension candidates. Maximal degree in co-relation 37242. Up to 6652 conditions per place. [2024-06-27 22:42:51,053 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 160 selfloop transitions, 25 changer transitions 0/191 dead transitions. [2024-06-27 22:42:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 191 transitions, 2059 flow [2024-06-27 22:42:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 22:42:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 22:42:51,055 INFO L175 Difference]: Start difference. First operand has 100 places, 146 transitions, 1490 flow. Second operand 7 states and 162 transitions. [2024-06-27 22:42:51,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 191 transitions, 2059 flow [2024-06-27 22:42:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 191 transitions, 1978 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:51,099 INFO L231 Difference]: Finished difference. Result has 103 places, 149 transitions, 1523 flow [2024-06-27 22:42:51,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1523, PETRI_PLACES=103, PETRI_TRANSITIONS=149} [2024-06-27 22:42:51,100 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2024-06-27 22:42:51,100 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 149 transitions, 1523 flow [2024-06-27 22:42:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:42:51,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:51,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:42:51,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:51,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1178566549, now seen corresponding path program 1 times [2024-06-27 22:42:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806911615] [2024-06-27 22:42:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:54,563 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 22:42:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:54,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806911615] [2024-06-27 22:42:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806911615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:54,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333839014] [2024-06-27 22:42:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:54,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:54,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:54,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 149 transitions, 1523 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:42:54,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:54,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:54,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:57,669 INFO L124 PetriNetUnfolderBase]: 5425/8128 cut-off events. [2024-06-27 22:42:57,670 INFO L125 PetriNetUnfolderBase]: For 52004/52010 co-relation queries the response was YES. [2024-06-27 22:42:57,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40182 conditions, 8128 events. 5425/8128 cut-off events. For 52004/52010 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 45945 event pairs, 1159 based on Foata normal form. 14/8139 useless extension candidates. Maximal degree in co-relation 40133. Up to 6048 conditions per place. [2024-06-27 22:42:57,724 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 220 selfloop transitions, 81 changer transitions 0/307 dead transitions. [2024-06-27 22:42:57,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 307 transitions, 2943 flow [2024-06-27 22:42:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:42:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:42:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 345 transitions. [2024-06-27 22:42:57,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-27 22:42:57,726 INFO L175 Difference]: Start difference. First operand has 103 places, 149 transitions, 1523 flow. Second operand 13 states and 345 transitions. [2024-06-27 22:42:57,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 307 transitions, 2943 flow [2024-06-27 22:42:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 307 transitions, 2857 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:57,789 INFO L231 Difference]: Finished difference. Result has 114 places, 169 transitions, 1925 flow [2024-06-27 22:42:57,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1925, PETRI_PLACES=114, PETRI_TRANSITIONS=169} [2024-06-27 22:42:57,789 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 64 predicate places. [2024-06-27 22:42:57,790 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 169 transitions, 1925 flow [2024-06-27 22:42:57,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:42:57,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:57,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:57,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:42:57,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -299079165, now seen corresponding path program 2 times [2024-06-27 22:42:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313350106] [2024-06-27 22:42:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:01,474 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 22:43:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313350106] [2024-06-27 22:43:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313350106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864804318] [2024-06-27 22:43:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:01,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:01,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 169 transitions, 1925 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:01,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:01,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:01,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:04,170 INFO L124 PetriNetUnfolderBase]: 5924/8742 cut-off events. [2024-06-27 22:43:04,170 INFO L125 PetriNetUnfolderBase]: For 74431/74530 co-relation queries the response was YES. [2024-06-27 22:43:04,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47177 conditions, 8742 events. 5924/8742 cut-off events. For 74431/74530 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 49605 event pairs, 1190 based on Foata normal form. 56/8788 useless extension candidates. Maximal degree in co-relation 47125. Up to 5639 conditions per place. [2024-06-27 22:43:04,232 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 185 selfloop transitions, 95 changer transitions 0/286 dead transitions. [2024-06-27 22:43:04,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 286 transitions, 3369 flow [2024-06-27 22:43:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 22:43:04,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 22:43:04,235 INFO L175 Difference]: Start difference. First operand has 114 places, 169 transitions, 1925 flow. Second operand 10 states and 255 transitions. [2024-06-27 22:43:04,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 286 transitions, 3369 flow [2024-06-27 22:43:04,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 286 transitions, 3207 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:04,335 INFO L231 Difference]: Finished difference. Result has 118 places, 193 transitions, 2319 flow [2024-06-27 22:43:04,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2319, PETRI_PLACES=118, PETRI_TRANSITIONS=193} [2024-06-27 22:43:04,336 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 68 predicate places. [2024-06-27 22:43:04,336 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 193 transitions, 2319 flow [2024-06-27 22:43:04,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:04,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:04,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:43:04,347 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:04,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1510570361, now seen corresponding path program 1 times [2024-06-27 22:43:04,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:04,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421554882] [2024-06-27 22:43:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:08,791 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 22:43:08,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421554882] [2024-06-27 22:43:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421554882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:08,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:08,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619227310] [2024-06-27 22:43:08,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:08,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:08,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:08,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 193 transitions, 2319 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:08,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:08,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:08,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:11,359 INFO L124 PetriNetUnfolderBase]: 5974/8775 cut-off events. [2024-06-27 22:43:11,360 INFO L125 PetriNetUnfolderBase]: For 85910/85918 co-relation queries the response was YES. [2024-06-27 22:43:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50532 conditions, 8775 events. 5974/8775 cut-off events. For 85910/85918 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 49311 event pairs, 853 based on Foata normal form. 12/8784 useless extension candidates. Maximal degree in co-relation 50477. Up to 7900 conditions per place. [2024-06-27 22:43:11,414 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 242 selfloop transitions, 52 changer transitions 0/300 dead transitions. [2024-06-27 22:43:11,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 300 transitions, 3471 flow [2024-06-27 22:43:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:43:11,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-27 22:43:11,416 INFO L175 Difference]: Start difference. First operand has 118 places, 193 transitions, 2319 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:43:11,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 300 transitions, 3471 flow [2024-06-27 22:43:11,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 300 transitions, 3301 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:11,520 INFO L231 Difference]: Finished difference. Result has 123 places, 197 transitions, 2352 flow [2024-06-27 22:43:11,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2352, PETRI_PLACES=123, PETRI_TRANSITIONS=197} [2024-06-27 22:43:11,520 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 73 predicate places. [2024-06-27 22:43:11,521 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 197 transitions, 2352 flow [2024-06-27 22:43:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:11,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:11,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:11,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:43:11,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:11,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 550413447, now seen corresponding path program 2 times [2024-06-27 22:43:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464450900] [2024-06-27 22:43:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:15,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464450900] [2024-06-27 22:43:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464450900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:15,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:15,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596932607] [2024-06-27 22:43:15,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:15,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:15,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 197 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:15,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:18,073 INFO L124 PetriNetUnfolderBase]: 6024/8861 cut-off events. [2024-06-27 22:43:18,073 INFO L125 PetriNetUnfolderBase]: For 84797/84805 co-relation queries the response was YES. [2024-06-27 22:43:18,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50799 conditions, 8861 events. 6024/8861 cut-off events. For 84797/84805 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 50065 event pairs, 1199 based on Foata normal form. 12/8870 useless extension candidates. Maximal degree in co-relation 50743. Up to 8156 conditions per place. [2024-06-27 22:43:18,148 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 244 selfloop transitions, 48 changer transitions 0/298 dead transitions. [2024-06-27 22:43:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 298 transitions, 3370 flow [2024-06-27 22:43:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 22:43:18,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2024-06-27 22:43:18,151 INFO L175 Difference]: Start difference. First operand has 123 places, 197 transitions, 2352 flow. Second operand 10 states and 259 transitions. [2024-06-27 22:43:18,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 298 transitions, 3370 flow [2024-06-27 22:43:18,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 298 transitions, 3245 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:18,303 INFO L231 Difference]: Finished difference. Result has 127 places, 199 transitions, 2382 flow [2024-06-27 22:43:18,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2382, PETRI_PLACES=127, PETRI_TRANSITIONS=199} [2024-06-27 22:43:18,304 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2024-06-27 22:43:18,304 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 199 transitions, 2382 flow [2024-06-27 22:43:18,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:18,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:43:18,305 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:18,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash 665704617, now seen corresponding path program 3 times [2024-06-27 22:43:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074854506] [2024-06-27 22:43:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074854506] [2024-06-27 22:43:22,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074854506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:22,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:22,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879297804] [2024-06-27 22:43:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:22,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:22,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 199 transitions, 2382 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:22,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:22,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:22,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:25,153 INFO L124 PetriNetUnfolderBase]: 6136/9029 cut-off events. [2024-06-27 22:43:25,153 INFO L125 PetriNetUnfolderBase]: For 87067/87110 co-relation queries the response was YES. [2024-06-27 22:43:25,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51586 conditions, 9029 events. 6136/9029 cut-off events. For 87067/87110 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 51354 event pairs, 1212 based on Foata normal form. 23/9045 useless extension candidates. Maximal degree in co-relation 51528. Up to 8382 conditions per place. [2024-06-27 22:43:25,225 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 216 selfloop transitions, 41 changer transitions 0/263 dead transitions. [2024-06-27 22:43:25,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 263 transitions, 3252 flow [2024-06-27 22:43:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:43:25,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 22:43:25,244 INFO L175 Difference]: Start difference. First operand has 127 places, 199 transitions, 2382 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:43:25,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 263 transitions, 3252 flow [2024-06-27 22:43:25,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 263 transitions, 3139 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:25,372 INFO L231 Difference]: Finished difference. Result has 128 places, 209 transitions, 2544 flow [2024-06-27 22:43:25,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2544, PETRI_PLACES=128, PETRI_TRANSITIONS=209} [2024-06-27 22:43:25,379 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2024-06-27 22:43:25,379 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 209 transitions, 2544 flow [2024-06-27 22:43:25,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:25,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:25,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:25,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:43:25,380 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:25,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:25,380 INFO L85 PathProgramCache]: Analyzing trace with hash 665889315, now seen corresponding path program 1 times [2024-06-27 22:43:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:25,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737560848] [2024-06-27 22:43:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:25,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:30,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:30,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737560848] [2024-06-27 22:43:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737560848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995794631] [2024-06-27 22:43:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:30,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:30,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:30,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 209 transitions, 2544 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:30,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:30,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:33,166 INFO L124 PetriNetUnfolderBase]: 6398/9403 cut-off events. [2024-06-27 22:43:33,166 INFO L125 PetriNetUnfolderBase]: For 94925/94968 co-relation queries the response was YES. [2024-06-27 22:43:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53494 conditions, 9403 events. 6398/9403 cut-off events. For 94925/94968 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 53486 event pairs, 1234 based on Foata normal form. 35/9431 useless extension candidates. Maximal degree in co-relation 53434. Up to 8358 conditions per place. [2024-06-27 22:43:33,241 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 231 selfloop transitions, 42 changer transitions 0/279 dead transitions. [2024-06-27 22:43:33,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 279 transitions, 3443 flow [2024-06-27 22:43:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:43:33,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-27 22:43:33,243 INFO L175 Difference]: Start difference. First operand has 128 places, 209 transitions, 2544 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:43:33,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 279 transitions, 3443 flow [2024-06-27 22:43:33,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 279 transitions, 3369 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:33,419 INFO L231 Difference]: Finished difference. Result has 133 places, 214 transitions, 2671 flow [2024-06-27 22:43:33,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2671, PETRI_PLACES=133, PETRI_TRANSITIONS=214} [2024-06-27 22:43:33,420 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2024-06-27 22:43:33,420 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 214 transitions, 2671 flow [2024-06-27 22:43:33,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:33,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:33,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:33,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:43:33,420 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:33,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1688976479, now seen corresponding path program 2 times [2024-06-27 22:43:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550243632] [2024-06-27 22:43:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:37,840 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 22:43:37,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550243632] [2024-06-27 22:43:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550243632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293209199] [2024-06-27 22:43:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:37,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:37,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 214 transitions, 2671 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:37,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:37,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:37,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:40,513 INFO L124 PetriNetUnfolderBase]: 6660/9822 cut-off events. [2024-06-27 22:43:40,513 INFO L125 PetriNetUnfolderBase]: For 108639/108746 co-relation queries the response was YES. [2024-06-27 22:43:40,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56511 conditions, 9822 events. 6660/9822 cut-off events. For 108639/108746 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 56285 event pairs, 1220 based on Foata normal form. 72/9884 useless extension candidates. Maximal degree in co-relation 56449. Up to 7651 conditions per place. [2024-06-27 22:43:40,590 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 211 selfloop transitions, 63 changer transitions 0/280 dead transitions. [2024-06-27 22:43:40,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 280 transitions, 3670 flow [2024-06-27 22:43:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:43:40,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 22:43:40,592 INFO L175 Difference]: Start difference. First operand has 133 places, 214 transitions, 2671 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:43:40,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 280 transitions, 3670 flow [2024-06-27 22:43:40,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 280 transitions, 3564 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:40,785 INFO L231 Difference]: Finished difference. Result has 136 places, 219 transitions, 2788 flow [2024-06-27 22:43:40,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2788, PETRI_PLACES=136, PETRI_TRANSITIONS=219} [2024-06-27 22:43:40,786 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 86 predicate places. [2024-06-27 22:43:40,786 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 219 transitions, 2788 flow [2024-06-27 22:43:40,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:40,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:40,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:40,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:43:40,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:40,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:40,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1697259059, now seen corresponding path program 3 times [2024-06-27 22:43:40,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024368431] [2024-06-27 22:43:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:44,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024368431] [2024-06-27 22:43:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024368431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064860297] [2024-06-27 22:43:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:44,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:44,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 219 transitions, 2788 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:44,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:44,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:44,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:47,865 INFO L124 PetriNetUnfolderBase]: 7206/10700 cut-off events. [2024-06-27 22:43:47,865 INFO L125 PetriNetUnfolderBase]: For 127736/127839 co-relation queries the response was YES. [2024-06-27 22:43:47,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62882 conditions, 10700 events. 7206/10700 cut-off events. For 127736/127839 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 62567 event pairs, 1212 based on Foata normal form. 72/10762 useless extension candidates. Maximal degree in co-relation 62819. Up to 7073 conditions per place. [2024-06-27 22:43:47,958 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 223 selfloop transitions, 65 changer transitions 0/294 dead transitions. [2024-06-27 22:43:47,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 294 transitions, 4017 flow [2024-06-27 22:43:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:43:47,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:43:47,959 INFO L175 Difference]: Start difference. First operand has 136 places, 219 transitions, 2788 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:43:47,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 294 transitions, 4017 flow [2024-06-27 22:43:48,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 294 transitions, 3858 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:48,344 INFO L231 Difference]: Finished difference. Result has 139 places, 224 transitions, 2894 flow [2024-06-27 22:43:48,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2894, PETRI_PLACES=139, PETRI_TRANSITIONS=224} [2024-06-27 22:43:48,344 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 89 predicate places. [2024-06-27 22:43:48,345 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 224 transitions, 2894 flow [2024-06-27 22:43:48,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:48,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:48,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:48,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:43:48,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:48,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:48,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2009940965, now seen corresponding path program 4 times [2024-06-27 22:43:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111887140] [2024-06-27 22:43:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111887140] [2024-06-27 22:43:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111887140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588876940] [2024-06-27 22:43:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:51,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:51,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 224 transitions, 2894 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:51,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:51,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:54,686 INFO L124 PetriNetUnfolderBase]: 8540/12742 cut-off events. [2024-06-27 22:43:54,686 INFO L125 PetriNetUnfolderBase]: For 169232/169335 co-relation queries the response was YES. [2024-06-27 22:43:54,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74458 conditions, 12742 events. 8540/12742 cut-off events. For 169232/169335 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 77153 event pairs, 1729 based on Foata normal form. 144/12876 useless extension candidates. Maximal degree in co-relation 74393. Up to 8411 conditions per place. [2024-06-27 22:43:54,798 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 222 selfloop transitions, 76 changer transitions 0/304 dead transitions. [2024-06-27 22:43:54,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 304 transitions, 4068 flow [2024-06-27 22:43:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:43:54,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:43:54,800 INFO L175 Difference]: Start difference. First operand has 139 places, 224 transitions, 2894 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:43:54,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 304 transitions, 4068 flow [2024-06-27 22:43:55,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 304 transitions, 3962 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:43:55,124 INFO L231 Difference]: Finished difference. Result has 143 places, 228 transitions, 3032 flow [2024-06-27 22:43:55,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3032, PETRI_PLACES=143, PETRI_TRANSITIONS=228} [2024-06-27 22:43:55,125 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 93 predicate places. [2024-06-27 22:43:55,125 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 228 transitions, 3032 flow [2024-06-27 22:43:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 22:43:55,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:55,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:43:55,126 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:55,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2010125663, now seen corresponding path program 4 times [2024-06-27 22:43:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:55,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302219442] [2024-06-27 22:43:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302219442] [2024-06-27 22:43:59,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302219442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:59,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:59,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:59,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105210911] [2024-06-27 22:43:59,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:59,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:59,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:59,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 228 transitions, 3032 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:59,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:02,575 INFO L124 PetriNetUnfolderBase]: 8809/13125 cut-off events. [2024-06-27 22:44:02,576 INFO L125 PetriNetUnfolderBase]: For 166584/166687 co-relation queries the response was YES. [2024-06-27 22:44:02,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78194 conditions, 13125 events. 8809/13125 cut-off events. For 166584/166687 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 79729 event pairs, 1575 based on Foata normal form. 72/13187 useless extension candidates. Maximal degree in co-relation 78127. Up to 10842 conditions per place. [2024-06-27 22:44:02,686 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 205 selfloop transitions, 75 changer transitions 0/286 dead transitions. [2024-06-27 22:44:02,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 286 transitions, 3955 flow [2024-06-27 22:44:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:44:02,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 22:44:02,688 INFO L175 Difference]: Start difference. First operand has 143 places, 228 transitions, 3032 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:44:02,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 286 transitions, 3955 flow [2024-06-27 22:44:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 286 transitions, 3805 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:02,997 INFO L231 Difference]: Finished difference. Result has 147 places, 235 transitions, 3269 flow [2024-06-27 22:44:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3269, PETRI_PLACES=147, PETRI_TRANSITIONS=235} [2024-06-27 22:44:02,998 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-27 22:44:02,998 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 235 transitions, 3269 flow [2024-06-27 22:44:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:02,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:02,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:02,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:44:02,999 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:02,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -599467976, now seen corresponding path program 1 times [2024-06-27 22:44:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261687171] [2024-06-27 22:44:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:03,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:07,024 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 22:44:07,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261687171] [2024-06-27 22:44:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261687171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551494155] [2024-06-27 22:44:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:07,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:07,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 235 transitions, 3269 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:07,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:07,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:07,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:12,201 INFO L124 PetriNetUnfolderBase]: 11872/17977 cut-off events. [2024-06-27 22:44:12,201 INFO L125 PetriNetUnfolderBase]: For 262374/262382 co-relation queries the response was YES. [2024-06-27 22:44:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106188 conditions, 17977 events. 11872/17977 cut-off events. For 262374/262382 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 118130 event pairs, 2337 based on Foata normal form. 64/18038 useless extension candidates. Maximal degree in co-relation 106118. Up to 8171 conditions per place. [2024-06-27 22:44:12,343 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 305 selfloop transitions, 108 changer transitions 0/419 dead transitions. [2024-06-27 22:44:12,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 419 transitions, 5451 flow [2024-06-27 22:44:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:44:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:44:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 366 transitions. [2024-06-27 22:44:12,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120401337792643 [2024-06-27 22:44:12,345 INFO L175 Difference]: Start difference. First operand has 147 places, 235 transitions, 3269 flow. Second operand 13 states and 366 transitions. [2024-06-27 22:44:12,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 419 transitions, 5451 flow [2024-06-27 22:44:12,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 419 transitions, 5263 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:44:12,894 INFO L231 Difference]: Finished difference. Result has 157 places, 244 transitions, 3580 flow [2024-06-27 22:44:12,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3580, PETRI_PLACES=157, PETRI_TRANSITIONS=244} [2024-06-27 22:44:12,895 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 107 predicate places. [2024-06-27 22:44:12,895 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 244 transitions, 3580 flow [2024-06-27 22:44:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:12,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:12,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:44:12,896 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:12,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1261670408, now seen corresponding path program 2 times [2024-06-27 22:44:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:12,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929947131] [2024-06-27 22:44:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:16,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929947131] [2024-06-27 22:44:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929947131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:16,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113695571] [2024-06-27 22:44:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:16,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:16,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 244 transitions, 3580 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:16,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:16,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:22,030 INFO L124 PetriNetUnfolderBase]: 12918/19775 cut-off events. [2024-06-27 22:44:22,031 INFO L125 PetriNetUnfolderBase]: For 318353/318361 co-relation queries the response was YES. [2024-06-27 22:44:22,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117218 conditions, 19775 events. 12918/19775 cut-off events. For 318353/318361 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 134551 event pairs, 3673 based on Foata normal form. 64/19836 useless extension candidates. Maximal degree in co-relation 117145. Up to 13836 conditions per place. [2024-06-27 22:44:22,250 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 310 selfloop transitions, 103 changer transitions 0/419 dead transitions. [2024-06-27 22:44:22,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 419 transitions, 5582 flow [2024-06-27 22:44:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:44:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:44:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 386 transitions. [2024-06-27 22:44:22,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993788819875776 [2024-06-27 22:44:22,252 INFO L175 Difference]: Start difference. First operand has 157 places, 244 transitions, 3580 flow. Second operand 14 states and 386 transitions. [2024-06-27 22:44:22,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 419 transitions, 5582 flow [2024-06-27 22:44:22,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 419 transitions, 5324 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:22,988 INFO L231 Difference]: Finished difference. Result has 162 places, 249 transitions, 3697 flow [2024-06-27 22:44:22,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3334, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3697, PETRI_PLACES=162, PETRI_TRANSITIONS=249} [2024-06-27 22:44:22,989 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 112 predicate places. [2024-06-27 22:44:22,989 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 249 transitions, 3697 flow [2024-06-27 22:44:22,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:22,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:22,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:44:22,990 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:22,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -117046528, now seen corresponding path program 3 times [2024-06-27 22:44:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:22,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216111606] [2024-06-27 22:44:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:27,526 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 22:44:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216111606] [2024-06-27 22:44:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216111606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:27,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:27,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418399973] [2024-06-27 22:44:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:27,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:27,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 249 transitions, 3697 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:27,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:27,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:27,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:32,777 INFO L124 PetriNetUnfolderBase]: 13622/20867 cut-off events. [2024-06-27 22:44:32,777 INFO L125 PetriNetUnfolderBase]: For 322820/322828 co-relation queries the response was YES. [2024-06-27 22:44:32,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120595 conditions, 20867 events. 13622/20867 cut-off events. For 322820/322828 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 143976 event pairs, 4273 based on Foata normal form. 72/20936 useless extension candidates. Maximal degree in co-relation 120521. Up to 16798 conditions per place. [2024-06-27 22:44:32,943 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 299 selfloop transitions, 102 changer transitions 0/407 dead transitions. [2024-06-27 22:44:32,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 407 transitions, 5404 flow [2024-06-27 22:44:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:44:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:44:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 385 transitions. [2024-06-27 22:44:33,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-27 22:44:33,238 INFO L175 Difference]: Start difference. First operand has 162 places, 249 transitions, 3697 flow. Second operand 15 states and 385 transitions. [2024-06-27 22:44:33,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 407 transitions, 5404 flow [2024-06-27 22:44:34,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 407 transitions, 5211 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:34,024 INFO L231 Difference]: Finished difference. Result has 167 places, 251 transitions, 3792 flow [2024-06-27 22:44:34,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3792, PETRI_PLACES=167, PETRI_TRANSITIONS=251} [2024-06-27 22:44:34,025 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 117 predicate places. [2024-06-27 22:44:34,025 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 251 transitions, 3792 flow [2024-06-27 22:44:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:34,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:34,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:44:34,026 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:34,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -677452156, now seen corresponding path program 1 times [2024-06-27 22:44:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115675614] [2024-06-27 22:44:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:41,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115675614] [2024-06-27 22:44:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115675614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:41,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:41,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:41,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730362405] [2024-06-27 22:44:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:41,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:41,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 251 transitions, 3792 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 22:44:41,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:41,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:41,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:47,603 INFO L124 PetriNetUnfolderBase]: 15815/24078 cut-off events. [2024-06-27 22:44:47,603 INFO L125 PetriNetUnfolderBase]: For 361736/361783 co-relation queries the response was YES. [2024-06-27 22:44:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139215 conditions, 24078 events. 15815/24078 cut-off events. For 361736/361783 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 168024 event pairs, 4798 based on Foata normal form. 71/24142 useless extension candidates. Maximal degree in co-relation 139139. Up to 19925 conditions per place. [2024-06-27 22:44:47,812 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 303 selfloop transitions, 79 changer transitions 0/388 dead transitions. [2024-06-27 22:44:47,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 388 transitions, 5612 flow [2024-06-27 22:44:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-06-27 22:44:47,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552536231884058 [2024-06-27 22:44:47,814 INFO L175 Difference]: Start difference. First operand has 167 places, 251 transitions, 3792 flow. Second operand 12 states and 305 transitions. [2024-06-27 22:44:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 388 transitions, 5612 flow [2024-06-27 22:44:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 388 transitions, 5341 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-06-27 22:44:48,639 INFO L231 Difference]: Finished difference. Result has 170 places, 287 transitions, 4414 flow [2024-06-27 22:44:48,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4414, PETRI_PLACES=170, PETRI_TRANSITIONS=287} [2024-06-27 22:44:48,639 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2024-06-27 22:44:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 287 transitions, 4414 flow [2024-06-27 22:44:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 22:44:48,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:48,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:48,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:44:48,640 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:48,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 818449988, now seen corresponding path program 4 times [2024-06-27 22:44:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:48,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829853759] [2024-06-27 22:44:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:53,290 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 22:44:53,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:53,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829853759] [2024-06-27 22:44:53,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829853759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686368303] [2024-06-27 22:44:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:53,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:53,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 287 transitions, 4414 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:53,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:53,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:53,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:59,826 INFO L124 PetriNetUnfolderBase]: 16688/25382 cut-off events. [2024-06-27 22:44:59,826 INFO L125 PetriNetUnfolderBase]: For 413193/413306 co-relation queries the response was YES. [2024-06-27 22:45:00,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151141 conditions, 25382 events. 16688/25382 cut-off events. For 413193/413306 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 177901 event pairs, 5065 based on Foata normal form. 131/25503 useless extension candidates. Maximal degree in co-relation 151060. Up to 20434 conditions per place. [2024-06-27 22:45:00,376 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 272 selfloop transitions, 123 changer transitions 0/401 dead transitions. [2024-06-27 22:45:00,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 401 transitions, 6274 flow [2024-06-27 22:45:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-27 22:45:00,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632411067193676 [2024-06-27 22:45:00,386 INFO L175 Difference]: Start difference. First operand has 170 places, 287 transitions, 4414 flow. Second operand 11 states and 285 transitions. [2024-06-27 22:45:00,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 401 transitions, 6274 flow [2024-06-27 22:45:01,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 401 transitions, 6104 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 22:45:01,552 INFO L231 Difference]: Finished difference. Result has 177 places, 292 transitions, 4626 flow [2024-06-27 22:45:01,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4626, PETRI_PLACES=177, PETRI_TRANSITIONS=292} [2024-06-27 22:45:01,553 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 127 predicate places. [2024-06-27 22:45:01,553 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 292 transitions, 4626 flow [2024-06-27 22:45:01,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:01,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:01,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:01,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:45:01,554 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:01,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash 818665190, now seen corresponding path program 2 times [2024-06-27 22:45:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:01,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605938715] [2024-06-27 22:45:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:06,744 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 22:45:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605938715] [2024-06-27 22:45:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605938715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:06,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285462997] [2024-06-27 22:45:06,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:06,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:06,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:06,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:06,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 292 transitions, 4626 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:06,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:06,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:06,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:14,008 INFO L124 PetriNetUnfolderBase]: 17956/27430 cut-off events. [2024-06-27 22:45:14,009 INFO L125 PetriNetUnfolderBase]: For 470572/470679 co-relation queries the response was YES. [2024-06-27 22:45:14,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167250 conditions, 27430 events. 17956/27430 cut-off events. For 470572/470679 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 195646 event pairs, 5353 based on Foata normal form. 115/27535 useless extension candidates. Maximal degree in co-relation 167167. Up to 20257 conditions per place. [2024-06-27 22:45:14,383 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 287 selfloop transitions, 135 changer transitions 0/428 dead transitions. [2024-06-27 22:45:14,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 428 transitions, 6906 flow [2024-06-27 22:45:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:45:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:45:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-06-27 22:45:14,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:45:14,385 INFO L175 Difference]: Start difference. First operand has 177 places, 292 transitions, 4626 flow. Second operand 12 states and 318 transitions. [2024-06-27 22:45:14,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 428 transitions, 6906 flow [2024-06-27 22:45:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 428 transitions, 6580 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:15,810 INFO L231 Difference]: Finished difference. Result has 181 places, 300 transitions, 4839 flow [2024-06-27 22:45:15,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4839, PETRI_PLACES=181, PETRI_TRANSITIONS=300} [2024-06-27 22:45:15,815 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2024-06-27 22:45:15,815 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 300 transitions, 4839 flow [2024-06-27 22:45:15,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:15,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:15,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:45:15,816 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:15,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1084362470, now seen corresponding path program 3 times [2024-06-27 22:45:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193717926] [2024-06-27 22:45:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat