./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:41:43,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:41:43,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:41:43,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:41:43,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:41:43,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:41:43,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:41:43,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:41:43,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:41:43,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:41:43,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:41:43,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:41:43,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:41:43,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:41:43,140 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:41:43,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:41:43,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:41:43,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:41:43,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:41:43,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:41:43,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:41:43,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:41:43,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:41:43,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:41:43,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:41:43,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:41:43,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:41:43,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:41:43,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:41:43,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:41:43,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:41:43,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:41:43,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:41:43,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:41:43,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:41:43,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:41:43,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:41:43,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:41:43,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:41:43,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:41:43,148 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:41:43,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:41:43,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:41:43,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:41:43,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:41:43,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:41:43,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:41:43,418 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:41:43,419 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:41:43,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 22:41:43,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:41:43,508 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:41:43,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:41:44,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:41:44,801 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:41:44,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:41:44,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62516bf6/8e1f0740b1684356b436cbd4513b444c/FLAG97912788d [2024-06-27 22:41:44,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62516bf6/8e1f0740b1684356b436cbd4513b444c [2024-06-27 22:41:44,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:41:44,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:41:44,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:41:44,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:41:44,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:41:44,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:43" (1/2) ... [2024-06-27 22:41:44,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3e87b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:41:44, skipping insertion in model container [2024-06-27 22:41:44,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:43" (1/2) ... [2024-06-27 22:41:44,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40ab9c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:41:44, skipping insertion in model container [2024-06-27 22:41:44,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:41:44" (2/2) ... [2024-06-27 22:41:44,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3e87b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:44, skipping insertion in model container [2024-06-27 22:41:44,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:41:44" (2/2) ... [2024-06-27 22:41:44,841 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:41:44,859 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:41:44,860 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (2LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff0 >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$r_buff1_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff1_used >= 0LL) && (2LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:41:44,860 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (2LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff0 >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$r_buff1_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff1_used >= 0LL) && (2LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:41:44,861 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (2LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff0 >= 0LL) && (1LL + (long long )z$r_buff0_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$r_buff1_thd1) - (long long )z$w_buff1 >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0) - (long long )z$w_buff1_used >= 0LL) && (2LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:41:44,861 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:41:44,861 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-27 22:41:44,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:41:45,035 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/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2024-06-27 22:41:45,150 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:41:45,158 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:41:45,191 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/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:41:45,343 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:41:45,386 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:41:45,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45 WrapperNode [2024-06-27 22:41:45,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:41:45,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:41:45,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:41:45,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:41:45,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,462 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-27 22:41:45,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:41:45,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:41:45,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:41:45,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:41:45,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,550 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:41:45,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:41:45,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:41:45,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:41:45,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:41:45,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (1/1) ... [2024-06-27 22:41:45,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:41:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:41:45,649 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 22:41:45,690 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 22:41:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:41:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:41:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:41:45,709 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:41:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:41:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:41:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:41:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:41:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:41:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:41:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:41:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:41:45,713 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 22:41:45,808 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:41:45,809 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:41:46,300 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:41:46,300 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:41:46,435 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:41:46,436 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:41:46,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:41:46 BoogieIcfgContainer [2024-06-27 22:41:46,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:41:46,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:41:46,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:41:46,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:41:46,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:41:43" (1/4) ... [2024-06-27 22:41:46,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7781a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:41:46, skipping insertion in model container [2024-06-27 22:41:46,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:41:44" (2/4) ... [2024-06-27 22:41:46,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7781a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:41:46, skipping insertion in model container [2024-06-27 22:41:46,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:41:45" (3/4) ... [2024-06-27 22:41:46,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7781a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:41:46, skipping insertion in model container [2024-06-27 22:41:46,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:41:46" (4/4) ... [2024-06-27 22:41:46,446 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:41:46,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:41:46,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:41:46,459 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:41:46,499 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:41:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:41:46,563 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:41:46,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:41:46,566 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 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:41:46,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:41:46,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:41:46,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:41:46,588 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;@5f47ff7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:41:46,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:41:46,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:41:46,592 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:41:46,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:41:46,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:46,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:41:46,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:46,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash 353829654, now seen corresponding path program 1 times [2024-06-27 22:41:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545403810] [2024-06-27 22:41:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:47,960 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 22:41:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545403810] [2024-06-27 22:41:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545403810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:41:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447301655] [2024-06-27 22:41:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:47,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:41:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:41:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:41:48,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:41:48,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 22:41:48,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:48,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:41:48,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:48,705 INFO L124 PetriNetUnfolderBase]: 3481/5042 cut-off events. [2024-06-27 22:41:48,705 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 22:41:48,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10160 conditions, 5042 events. 3481/5042 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27213 event pairs, 2057 based on Foata normal form. 175/4966 useless extension candidates. Maximal degree in co-relation 10148. Up to 5018 conditions per place. [2024-06-27 22:41:48,728 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:41:48,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 221 flow [2024-06-27 22:41:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:41:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:41:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 22:41:48,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 22:41:48,739 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-27 22:41:48,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 221 flow [2024-06-27 22:41:48,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:41:48,743 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:41:48,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:41:48,746 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:41:48,746 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:41:48,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 22:41:48,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:48,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:48,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:41:48,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:48,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 727930580, now seen corresponding path program 1 times [2024-06-27 22:41:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403284199] [2024-06-27 22:41:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:49,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403284199] [2024-06-27 22:41:49,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403284199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:49,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:49,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:41:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862102264] [2024-06-27 22:41:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:41:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:41:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:41:49,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:41:49,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 22:41:49,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:49,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:41:49,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:50,231 INFO L124 PetriNetUnfolderBase]: 3486/5570 cut-off events. [2024-06-27 22:41:50,232 INFO L125 PetriNetUnfolderBase]: For 796/803 co-relation queries the response was YES. [2024-06-27 22:41:50,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 5570 events. 3486/5570 cut-off events. For 796/803 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 34416 event pairs, 2361 based on Foata normal form. 7/5190 useless extension candidates. Maximal degree in co-relation 11919. Up to 5007 conditions per place. [2024-06-27 22:41:50,258 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 52 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2024-06-27 22:41:50,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 319 flow [2024-06-27 22:41:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:41:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:41:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 22:41:50,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-06-27 22:41:50,262 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 117 transitions. [2024-06-27 22:41:50,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 319 flow [2024-06-27 22:41:50,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:41:50,265 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 187 flow [2024-06-27 22:41:50,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-27 22:41:50,266 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 22:41:50,266 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 187 flow [2024-06-27 22:41:50,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 22:41:50,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:50,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:41:50,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:50,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1091013137, now seen corresponding path program 1 times [2024-06-27 22:41:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893786664] [2024-06-27 22:41:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:51,172 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 22:41:51,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:51,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893786664] [2024-06-27 22:41:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893786664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:41:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968972775] [2024-06-27 22:41:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:41:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:41:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:41:51,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:41:51,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 22:41:51,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:51,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:41:51,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:51,948 INFO L124 PetriNetUnfolderBase]: 4222/6707 cut-off events. [2024-06-27 22:41:51,948 INFO L125 PetriNetUnfolderBase]: For 2710/2722 co-relation queries the response was YES. [2024-06-27 22:41:51,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15688 conditions, 6707 events. 4222/6707 cut-off events. For 2710/2722 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41936 event pairs, 2489 based on Foata normal form. 12/6266 useless extension candidates. Maximal degree in co-relation 15673. Up to 6015 conditions per place. [2024-06-27 22:41:51,987 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 71 selfloop transitions, 11 changer transitions 2/94 dead transitions. [2024-06-27 22:41:51,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 481 flow [2024-06-27 22:41:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:41:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:41:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-27 22:41:51,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6173913043478261 [2024-06-27 22:41:51,990 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 187 flow. Second operand 5 states and 142 transitions. [2024-06-27 22:41:51,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 481 flow [2024-06-27 22:41:51,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 464 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:41:51,993 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 273 flow [2024-06-27 22:41:51,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 22:41:51,994 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-27 22:41:51,994 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 273 flow [2024-06-27 22:41:51,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 22:41:51,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:51,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:41:51,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -538329453, now seen corresponding path program 1 times [2024-06-27 22:41:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825612014] [2024-06-27 22:41:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:53,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825612014] [2024-06-27 22:41:53,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825612014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:53,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:53,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:41:53,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860034780] [2024-06-27 22:41:53,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:41:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:41:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:41:53,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:41:53,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:53,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:53,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:41:53,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:53,949 INFO L124 PetriNetUnfolderBase]: 4227/6713 cut-off events. [2024-06-27 22:41:53,950 INFO L125 PetriNetUnfolderBase]: For 4577/4601 co-relation queries the response was YES. [2024-06-27 22:41:53,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16867 conditions, 6713 events. 4227/6713 cut-off events. For 4577/4601 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41856 event pairs, 2189 based on Foata normal form. 18/6278 useless extension candidates. Maximal degree in co-relation 16848. Up to 5997 conditions per place. [2024-06-27 22:41:53,991 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 81 selfloop transitions, 15 changer transitions 3/109 dead transitions. [2024-06-27 22:41:53,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 109 transitions, 595 flow [2024-06-27 22:41:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:41:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:41:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-27 22:41:53,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6159420289855072 [2024-06-27 22:41:53,994 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 273 flow. Second operand 6 states and 170 transitions. [2024-06-27 22:41:53,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 109 transitions, 595 flow [2024-06-27 22:41:54,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 591 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:41:54,001 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 334 flow [2024-06-27 22:41:54,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-27 22:41:54,003 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 22:41:54,003 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 334 flow [2024-06-27 22:41:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:54,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:54,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:54,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:41:54,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:54,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 491657840, now seen corresponding path program 1 times [2024-06-27 22:41:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:54,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575987843] [2024-06-27 22:41:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:55,330 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 22:41:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575987843] [2024-06-27 22:41:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575987843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:41:55,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118662858] [2024-06-27 22:41:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:55,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:41:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:41:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:41:55,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:41:55,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 334 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 22:41:55,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:55,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:41:55,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:56,301 INFO L124 PetriNetUnfolderBase]: 4236/6724 cut-off events. [2024-06-27 22:41:56,302 INFO L125 PetriNetUnfolderBase]: For 7000/7024 co-relation queries the response was YES. [2024-06-27 22:41:56,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18286 conditions, 6724 events. 4236/6724 cut-off events. For 7000/7024 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 41717 event pairs, 2172 based on Foata normal form. 21/6292 useless extension candidates. Maximal degree in co-relation 18264. Up to 5960 conditions per place. [2024-06-27 22:41:56,340 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 88 selfloop transitions, 18 changer transitions 4/120 dead transitions. [2024-06-27 22:41:56,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 120 transitions, 698 flow [2024-06-27 22:41:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:41:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:41:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 22:41:56,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2024-06-27 22:41:56,343 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 334 flow. Second operand 7 states and 194 transitions. [2024-06-27 22:41:56,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 120 transitions, 698 flow [2024-06-27 22:41:56,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 120 transitions, 665 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:41:56,353 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 361 flow [2024-06-27 22:41:56,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-27 22:41:56,356 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 22:41:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 361 flow [2024-06-27 22:41:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 22:41:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:41:56,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1557721336, now seen corresponding path program 1 times [2024-06-27 22:41:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37661692] [2024-06-27 22:41:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:56,408 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 22:41:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37661692] [2024-06-27 22:41:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37661692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:41:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987159698] [2024-06-27 22:41:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:56,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:41:56,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:41:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:41:56,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 22:41:56,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 22:41:56,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:56,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 22:41:56,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:56,713 INFO L124 PetriNetUnfolderBase]: 1582/3034 cut-off events. [2024-06-27 22:41:56,713 INFO L125 PetriNetUnfolderBase]: For 2239/2386 co-relation queries the response was YES. [2024-06-27 22:41:56,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 3034 events. 1582/3034 cut-off events. For 2239/2386 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21951 event pairs, 824 based on Foata normal form. 4/2709 useless extension candidates. Maximal degree in co-relation 7484. Up to 1949 conditions per place. [2024-06-27 22:41:56,731 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 40 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-06-27 22:41:56,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 489 flow [2024-06-27 22:41:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:41:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:41:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 22:41:56,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2024-06-27 22:41:56,733 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 361 flow. Second operand 3 states and 107 transitions. [2024-06-27 22:41:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 489 flow [2024-06-27 22:41:56,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:41:56,736 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 321 flow [2024-06-27 22:41:56,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-06-27 22:41:56,739 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-27 22:41:56,739 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 321 flow [2024-06-27 22:41:56,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 22:41:56,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:56,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:56,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:41:56,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:56,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1557722461, now seen corresponding path program 1 times [2024-06-27 22:41:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827612473] [2024-06-27 22:41:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:58,391 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 22:41:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827612473] [2024-06-27 22:41:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827612473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:41:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929684509] [2024-06-27 22:41:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:58,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:41:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:41:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:41:58,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:41:58,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:58,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:58,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:41:58,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:59,472 INFO L124 PetriNetUnfolderBase]: 4953/7747 cut-off events. [2024-06-27 22:41:59,473 INFO L125 PetriNetUnfolderBase]: For 11046/11046 co-relation queries the response was YES. [2024-06-27 22:41:59,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21843 conditions, 7747 events. 4953/7747 cut-off events. For 11046/11046 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46367 event pairs, 2334 based on Foata normal form. 4/7527 useless extension candidates. Maximal degree in co-relation 21819. Up to 7003 conditions per place. [2024-06-27 22:41:59,506 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 81 selfloop transitions, 13 changer transitions 3/104 dead transitions. [2024-06-27 22:41:59,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 675 flow [2024-06-27 22:41:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:41:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:41:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 22:41:59,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 22:41:59,508 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 321 flow. Second operand 5 states and 117 transitions. [2024-06-27 22:41:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 675 flow [2024-06-27 22:41:59,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 655 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:41:59,517 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 438 flow [2024-06-27 22:41:59,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-27 22:41:59,519 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2024-06-27 22:41:59,519 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 438 flow [2024-06-27 22:41:59,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:59,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:59,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:41:59,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:41:59,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2064928975, now seen corresponding path program 1 times [2024-06-27 22:41:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:59,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110411785] [2024-06-27 22:41:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:00,697 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 22:42:00,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:00,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110411785] [2024-06-27 22:42:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110411785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:00,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621435092] [2024-06-27 22:42:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:00,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:00,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 438 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:00,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:01,568 INFO L124 PetriNetUnfolderBase]: 4539/7192 cut-off events. [2024-06-27 22:42:01,569 INFO L125 PetriNetUnfolderBase]: For 11586/11589 co-relation queries the response was YES. [2024-06-27 22:42:01,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21432 conditions, 7192 events. 4539/7192 cut-off events. For 11586/11589 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 43274 event pairs, 1825 based on Foata normal form. 5/6968 useless extension candidates. Maximal degree in co-relation 21403. Up to 6339 conditions per place. [2024-06-27 22:42:01,611 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 88 selfloop transitions, 34 changer transitions 0/129 dead transitions. [2024-06-27 22:42:01,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 906 flow [2024-06-27 22:42:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 22:42:01,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 22:42:01,613 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 438 flow. Second operand 7 states and 159 transitions. [2024-06-27 22:42:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 906 flow [2024-06-27 22:42:01,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 906 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:01,622 INFO L231 Difference]: Finished difference. Result has 79 places, 97 transitions, 679 flow [2024-06-27 22:42:01,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=679, PETRI_PLACES=79, PETRI_TRANSITIONS=97} [2024-06-27 22:42:01,622 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-27 22:42:01,623 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 97 transitions, 679 flow [2024-06-27 22:42:01,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:01,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:01,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:01,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:42:01,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:01,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2064808819, now seen corresponding path program 1 times [2024-06-27 22:42:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:01,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624807902] [2024-06-27 22:42:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:01,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:02,827 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 22:42:02,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624807902] [2024-06-27 22:42:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624807902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:02,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:02,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:02,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575031719] [2024-06-27 22:42:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:02,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:02,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:02,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:02,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 97 transitions, 679 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:02,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:03,838 INFO L124 PetriNetUnfolderBase]: 4598/7275 cut-off events. [2024-06-27 22:42:03,839 INFO L125 PetriNetUnfolderBase]: For 16295/16298 co-relation queries the response was YES. [2024-06-27 22:42:03,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23729 conditions, 7275 events. 4598/7275 cut-off events. For 16295/16298 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43571 event pairs, 1728 based on Foata normal form. 2/7048 useless extension candidates. Maximal degree in co-relation 23694. Up to 6468 conditions per place. [2024-06-27 22:42:03,879 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 114 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-27 22:42:03,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 1220 flow [2024-06-27 22:42:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:42:03,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 22:42:03,880 INFO L175 Difference]: Start difference. First operand has 79 places, 97 transitions, 679 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:42:03,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 1220 flow [2024-06-27 22:42:03,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 1169 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 22:42:03,898 INFO L231 Difference]: Finished difference. Result has 87 places, 120 transitions, 897 flow [2024-06-27 22:42:03,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=897, PETRI_PLACES=87, PETRI_TRANSITIONS=120} [2024-06-27 22:42:03,899 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-27 22:42:03,899 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 120 transitions, 897 flow [2024-06-27 22:42:03,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:03,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:03,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:03,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:42:03,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:03,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash -733009405, now seen corresponding path program 2 times [2024-06-27 22:42:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:03,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360995413] [2024-06-27 22:42:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:05,038 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 22:42:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360995413] [2024-06-27 22:42:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360995413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946992704] [2024-06-27 22:42:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:05,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:05,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 120 transitions, 897 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:05,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:05,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:05,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:06,141 INFO L124 PetriNetUnfolderBase]: 4640/7333 cut-off events. [2024-06-27 22:42:06,142 INFO L125 PetriNetUnfolderBase]: For 20048/20051 co-relation queries the response was YES. [2024-06-27 22:42:06,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25582 conditions, 7333 events. 4640/7333 cut-off events. For 20048/20051 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43896 event pairs, 1732 based on Foata normal form. 5/7109 useless extension candidates. Maximal degree in co-relation 25541. Up to 6514 conditions per place. [2024-06-27 22:42:06,189 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 109 selfloop transitions, 41 changer transitions 0/157 dead transitions. [2024-06-27 22:42:06,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1348 flow [2024-06-27 22:42:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:42:06,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 22:42:06,191 INFO L175 Difference]: Start difference. First operand has 87 places, 120 transitions, 897 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:42:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1348 flow [2024-06-27 22:42:06,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 157 transitions, 1329 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:06,215 INFO L231 Difference]: Finished difference. Result has 94 places, 130 transitions, 1084 flow [2024-06-27 22:42:06,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=94, PETRI_TRANSITIONS=130} [2024-06-27 22:42:06,216 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-06-27 22:42:06,216 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 130 transitions, 1084 flow [2024-06-27 22:42:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:06,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:06,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:06,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:42:06,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:06,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1931836203, now seen corresponding path program 2 times [2024-06-27 22:42:06,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:06,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679367478] [2024-06-27 22:42:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:06,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:07,257 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 22:42:07,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679367478] [2024-06-27 22:42:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679367478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197418009] [2024-06-27 22:42:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:07,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:07,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 130 transitions, 1084 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:07,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:07,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:07,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:08,206 INFO L124 PetriNetUnfolderBase]: 4658/7357 cut-off events. [2024-06-27 22:42:08,206 INFO L125 PetriNetUnfolderBase]: For 22476/22479 co-relation queries the response was YES. [2024-06-27 22:42:08,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26224 conditions, 7357 events. 4658/7357 cut-off events. For 22476/22479 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43977 event pairs, 1728 based on Foata normal form. 2/7130 useless extension candidates. Maximal degree in co-relation 26179. Up to 6544 conditions per place. [2024-06-27 22:42:08,248 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 118 selfloop transitions, 34 changer transitions 0/159 dead transitions. [2024-06-27 22:42:08,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1523 flow [2024-06-27 22:42:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 22:42:08,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 22:42:08,250 INFO L175 Difference]: Start difference. First operand has 94 places, 130 transitions, 1084 flow. Second operand 6 states and 135 transitions. [2024-06-27 22:42:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1523 flow [2024-06-27 22:42:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 159 transitions, 1426 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:08,276 INFO L231 Difference]: Finished difference. Result has 97 places, 135 transitions, 1125 flow [2024-06-27 22:42:08,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1125, PETRI_PLACES=97, PETRI_TRANSITIONS=135} [2024-06-27 22:42:08,277 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2024-06-27 22:42:08,277 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 135 transitions, 1125 flow [2024-06-27 22:42:08,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:08,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:08,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:08,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:42:08,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1932102183, now seen corresponding path program 3 times [2024-06-27 22:42:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:08,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63461899] [2024-06-27 22:42:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:08,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:09,327 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 22:42:09,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63461899] [2024-06-27 22:42:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63461899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:09,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281687705] [2024-06-27 22:42:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:09,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:09,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:09,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:09,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 135 transitions, 1125 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:09,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:09,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:09,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:10,329 INFO L124 PetriNetUnfolderBase]: 4687/7401 cut-off events. [2024-06-27 22:42:10,329 INFO L125 PetriNetUnfolderBase]: For 24653/24656 co-relation queries the response was YES. [2024-06-27 22:42:10,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26623 conditions, 7401 events. 4687/7401 cut-off events. For 24653/24656 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 44267 event pairs, 1722 based on Foata normal form. 6/7176 useless extension candidates. Maximal degree in co-relation 26576. Up to 6631 conditions per place. [2024-06-27 22:42:10,380 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 137 selfloop transitions, 19 changer transitions 0/163 dead transitions. [2024-06-27 22:42:10,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1528 flow [2024-06-27 22:42:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 22:42:10,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:42:10,411 INFO L175 Difference]: Start difference. First operand has 97 places, 135 transitions, 1125 flow. Second operand 6 states and 132 transitions. [2024-06-27 22:42:10,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1528 flow [2024-06-27 22:42:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 163 transitions, 1471 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:10,442 INFO L231 Difference]: Finished difference. Result has 99 places, 138 transitions, 1140 flow [2024-06-27 22:42:10,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=99, PETRI_TRANSITIONS=138} [2024-06-27 22:42:10,443 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-06-27 22:42:10,443 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 138 transitions, 1140 flow [2024-06-27 22:42:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:10,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:10,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:10,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:42:10,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:10,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1931836017, now seen corresponding path program 3 times [2024-06-27 22:42:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019444992] [2024-06-27 22:42:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:11,501 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 22:42:11,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019444992] [2024-06-27 22:42:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019444992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:11,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:11,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:11,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355368469] [2024-06-27 22:42:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:11,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:11,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:11,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:11,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 138 transitions, 1140 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:11,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:11,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:11,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:12,503 INFO L124 PetriNetUnfolderBase]: 4679/7393 cut-off events. [2024-06-27 22:42:12,503 INFO L125 PetriNetUnfolderBase]: For 26423/26426 co-relation queries the response was YES. [2024-06-27 22:42:12,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27380 conditions, 7393 events. 4679/7393 cut-off events. For 26423/26426 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 44289 event pairs, 1732 based on Foata normal form. 5/7167 useless extension candidates. Maximal degree in co-relation 27333. Up to 6566 conditions per place. [2024-06-27 22:42:12,543 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 116 selfloop transitions, 37 changer transitions 0/160 dead transitions. [2024-06-27 22:42:12,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 1502 flow [2024-06-27 22:42:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 22:42:12,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 22:42:12,545 INFO L175 Difference]: Start difference. First operand has 99 places, 138 transitions, 1140 flow. Second operand 6 states and 136 transitions. [2024-06-27 22:42:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 1502 flow [2024-06-27 22:42:12,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 160 transitions, 1452 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:42:12,573 INFO L231 Difference]: Finished difference. Result has 102 places, 138 transitions, 1180 flow [2024-06-27 22:42:12,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1180, PETRI_PLACES=102, PETRI_TRANSITIONS=138} [2024-06-27 22:42:12,573 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-06-27 22:42:12,574 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 138 transitions, 1180 flow [2024-06-27 22:42:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:12,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:12,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:42:12,574 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:12,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -71526181, now seen corresponding path program 4 times [2024-06-27 22:42:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233350780] [2024-06-27 22:42:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:13,995 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 22:42:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233350780] [2024-06-27 22:42:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233350780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910536963] [2024-06-27 22:42:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:14,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:14,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 138 transitions, 1180 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:14,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:14,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:14,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:15,351 INFO L124 PetriNetUnfolderBase]: 4661/7414 cut-off events. [2024-06-27 22:42:15,352 INFO L125 PetriNetUnfolderBase]: For 28725/28751 co-relation queries the response was YES. [2024-06-27 22:42:15,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27652 conditions, 7414 events. 4661/7414 cut-off events. For 28725/28751 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 44506 event pairs, 1628 based on Foata normal form. 5/7153 useless extension candidates. Maximal degree in co-relation 27604. Up to 6206 conditions per place. [2024-06-27 22:42:15,404 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 113 selfloop transitions, 90 changer transitions 0/224 dead transitions. [2024-06-27 22:42:15,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 224 transitions, 2118 flow [2024-06-27 22:42:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:42:15,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-27 22:42:15,406 INFO L175 Difference]: Start difference. First operand has 102 places, 138 transitions, 1180 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:42:15,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 224 transitions, 2118 flow [2024-06-27 22:42:15,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 224 transitions, 2001 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:15,440 INFO L231 Difference]: Finished difference. Result has 107 places, 183 transitions, 1725 flow [2024-06-27 22:42:15,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1725, PETRI_PLACES=107, PETRI_TRANSITIONS=183} [2024-06-27 22:42:15,440 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-06-27 22:42:15,441 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 183 transitions, 1725 flow [2024-06-27 22:42:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:15,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:15,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:15,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:42:15,441 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:15,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1238835923, now seen corresponding path program 5 times [2024-06-27 22:42:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:15,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943888355] [2024-06-27 22:42:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:15,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943888355] [2024-06-27 22:42:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943888355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:17,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:17,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:17,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023988639] [2024-06-27 22:42:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:17,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:17,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:17,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 183 transitions, 1725 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:17,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:17,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:18,969 INFO L124 PetriNetUnfolderBase]: 4973/7859 cut-off events. [2024-06-27 22:42:18,970 INFO L125 PetriNetUnfolderBase]: For 39417/39480 co-relation queries the response was YES. [2024-06-27 22:42:18,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32746 conditions, 7859 events. 4973/7859 cut-off events. For 39417/39480 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 46979 event pairs, 1652 based on Foata normal form. 26/7604 useless extension candidates. Maximal degree in co-relation 32695. Up to 6471 conditions per place. [2024-06-27 22:42:19,026 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 126 selfloop transitions, 162 changer transitions 0/309 dead transitions. [2024-06-27 22:42:19,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 309 transitions, 3494 flow [2024-06-27 22:42:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:42:19,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:42:19,033 INFO L175 Difference]: Start difference. First operand has 107 places, 183 transitions, 1725 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:42:19,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 309 transitions, 3494 flow [2024-06-27 22:42:19,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 309 transitions, 3416 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:19,086 INFO L231 Difference]: Finished difference. Result has 117 places, 266 transitions, 3113 flow [2024-06-27 22:42:19,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3113, PETRI_PLACES=117, PETRI_TRANSITIONS=266} [2024-06-27 22:42:19,087 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 22:42:19,087 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 266 transitions, 3113 flow [2024-06-27 22:42:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:19,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:19,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:42:19,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1199016857, now seen corresponding path program 4 times [2024-06-27 22:42:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448097100] [2024-06-27 22:42:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:20,800 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 22:42:20,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:20,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448097100] [2024-06-27 22:42:20,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448097100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:20,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:20,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598785352] [2024-06-27 22:42:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:20,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:20,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:20,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 266 transitions, 3113 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:20,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:22,383 INFO L124 PetriNetUnfolderBase]: 5281/8210 cut-off events. [2024-06-27 22:42:22,384 INFO L125 PetriNetUnfolderBase]: For 45173/45176 co-relation queries the response was YES. [2024-06-27 22:42:22,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36708 conditions, 8210 events. 5281/8210 cut-off events. For 45173/45176 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 48126 event pairs, 1727 based on Foata normal form. 2/7991 useless extension candidates. Maximal degree in co-relation 36651. Up to 7299 conditions per place. [2024-06-27 22:42:22,453 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 255 selfloop transitions, 77 changer transitions 0/339 dead transitions. [2024-06-27 22:42:22,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 339 transitions, 4276 flow [2024-06-27 22:42:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 22:42:22,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-27 22:42:22,457 INFO L175 Difference]: Start difference. First operand has 117 places, 266 transitions, 3113 flow. Second operand 8 states and 177 transitions. [2024-06-27 22:42:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 339 transitions, 4276 flow [2024-06-27 22:42:22,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 339 transitions, 4097 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 22:42:22,551 INFO L231 Difference]: Finished difference. Result has 126 places, 305 transitions, 3580 flow [2024-06-27 22:42:22,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3580, PETRI_PLACES=126, PETRI_TRANSITIONS=305} [2024-06-27 22:42:22,552 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-27 22:42:22,553 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 305 transitions, 3580 flow [2024-06-27 22:42:22,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:22,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:22,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:42:22,557 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:22,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:22,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1238715953, now seen corresponding path program 6 times [2024-06-27 22:42:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527688847] [2024-06-27 22:42:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:22,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:24,195 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 22:42:24,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:24,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527688847] [2024-06-27 22:42:24,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527688847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:24,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:24,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:24,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123936622] [2024-06-27 22:42:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:24,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:24,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 305 transitions, 3580 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:24,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:24,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:24,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:25,808 INFO L124 PetriNetUnfolderBase]: 5089/8005 cut-off events. [2024-06-27 22:42:25,809 INFO L125 PetriNetUnfolderBase]: For 53835/53951 co-relation queries the response was YES. [2024-06-27 22:42:25,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36933 conditions, 8005 events. 5089/8005 cut-off events. For 53835/53951 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 47491 event pairs, 1662 based on Foata normal form. 21/7727 useless extension candidates. Maximal degree in co-relation 36871. Up to 6865 conditions per place. [2024-06-27 22:42:25,881 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 233 selfloop transitions, 101 changer transitions 0/365 dead transitions. [2024-06-27 22:42:25,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 365 transitions, 4717 flow [2024-06-27 22:42:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:42:25,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 22:42:25,883 INFO L175 Difference]: Start difference. First operand has 126 places, 305 transitions, 3580 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:42:25,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 365 transitions, 4717 flow [2024-06-27 22:42:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 365 transitions, 4673 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:25,972 INFO L231 Difference]: Finished difference. Result has 134 places, 330 transitions, 4148 flow [2024-06-27 22:42:25,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4148, PETRI_PLACES=134, PETRI_TRANSITIONS=330} [2024-06-27 22:42:25,973 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-06-27 22:42:25,973 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 330 transitions, 4148 flow [2024-06-27 22:42:25,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:25,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:25,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:25,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:42:25,974 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:25,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1932112072, now seen corresponding path program 1 times [2024-06-27 22:42:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:25,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500815823] [2024-06-27 22:42:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:27,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:27,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500815823] [2024-06-27 22:42:27,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500815823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:27,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:27,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:27,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135930967] [2024-06-27 22:42:27,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:27,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:27,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:27,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 330 transitions, 4148 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:27,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:27,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:27,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:29,106 INFO L124 PetriNetUnfolderBase]: 5324/8295 cut-off events. [2024-06-27 22:42:29,106 INFO L125 PetriNetUnfolderBase]: For 58233/58236 co-relation queries the response was YES. [2024-06-27 22:42:29,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39281 conditions, 8295 events. 5324/8295 cut-off events. For 58233/58236 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 48940 event pairs, 1710 based on Foata normal form. 6/8069 useless extension candidates. Maximal degree in co-relation 39215. Up to 7452 conditions per place. [2024-06-27 22:42:29,174 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 339 selfloop transitions, 18 changer transitions 0/364 dead transitions. [2024-06-27 22:42:29,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 364 transitions, 5033 flow [2024-06-27 22:42:29,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-27 22:42:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2024-06-27 22:42:29,176 INFO L175 Difference]: Start difference. First operand has 134 places, 330 transitions, 4148 flow. Second operand 7 states and 146 transitions. [2024-06-27 22:42:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 364 transitions, 5033 flow [2024-06-27 22:42:29,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 364 transitions, 4752 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:29,272 INFO L231 Difference]: Finished difference. Result has 137 places, 332 transitions, 3932 flow [2024-06-27 22:42:29,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3867, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3932, PETRI_PLACES=137, PETRI_TRANSITIONS=332} [2024-06-27 22:42:29,273 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-27 22:42:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 332 transitions, 3932 flow [2024-06-27 22:42:29,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:29,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:29,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:29,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:42:29,274 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:29,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1252263647, now seen corresponding path program 1 times [2024-06-27 22:42:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363398066] [2024-06-27 22:42:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363398066] [2024-06-27 22:42:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363398066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:30,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107059761] [2024-06-27 22:42:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:31,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:31,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 332 transitions, 3932 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:31,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:31,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:31,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:32,398 INFO L124 PetriNetUnfolderBase]: 5554/8461 cut-off events. [2024-06-27 22:42:32,398 INFO L125 PetriNetUnfolderBase]: For 68581/68832 co-relation queries the response was YES. [2024-06-27 22:42:32,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41029 conditions, 8461 events. 5554/8461 cut-off events. For 68581/68832 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 49026 event pairs, 1585 based on Foata normal form. 59/8188 useless extension candidates. Maximal degree in co-relation 40962. Up to 6688 conditions per place. [2024-06-27 22:42:32,474 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 257 selfloop transitions, 176 changer transitions 0/465 dead transitions. [2024-06-27 22:42:32,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 465 transitions, 6004 flow [2024-06-27 22:42:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:42:32,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:42:32,476 INFO L175 Difference]: Start difference. First operand has 137 places, 332 transitions, 3932 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:42:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 465 transitions, 6004 flow [2024-06-27 22:42:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 465 transitions, 5951 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:32,707 INFO L231 Difference]: Finished difference. Result has 144 places, 397 transitions, 5175 flow [2024-06-27 22:42:32,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5175, PETRI_PLACES=144, PETRI_TRANSITIONS=397} [2024-06-27 22:42:32,708 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-27 22:42:32,708 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 397 transitions, 5175 flow [2024-06-27 22:42:32,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:32,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:32,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:32,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:42:32,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:32,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1252173437, now seen corresponding path program 2 times [2024-06-27 22:42:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97805122] [2024-06-27 22:42:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:34,093 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 22:42:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97805122] [2024-06-27 22:42:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97805122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495480593] [2024-06-27 22:42:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:34,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:34,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 397 transitions, 5175 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:34,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:34,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:34,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:35,743 INFO L124 PetriNetUnfolderBase]: 5688/8642 cut-off events. [2024-06-27 22:42:35,744 INFO L125 PetriNetUnfolderBase]: For 91810/92172 co-relation queries the response was YES. [2024-06-27 22:42:35,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48266 conditions, 8642 events. 5688/8642 cut-off events. For 91810/92172 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50009 event pairs, 1630 based on Foata normal form. 41/8347 useless extension candidates. Maximal degree in co-relation 48194. Up to 7050 conditions per place. [2024-06-27 22:42:35,827 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 264 selfloop transitions, 187 changer transitions 0/483 dead transitions. [2024-06-27 22:42:35,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 483 transitions, 6946 flow [2024-06-27 22:42:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 22:42:35,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-27 22:42:35,829 INFO L175 Difference]: Start difference. First operand has 144 places, 397 transitions, 5175 flow. Second operand 9 states and 210 transitions. [2024-06-27 22:42:35,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 483 transitions, 6946 flow [2024-06-27 22:42:35,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 483 transitions, 6915 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:35,996 INFO L231 Difference]: Finished difference. Result has 153 places, 419 transitions, 5912 flow [2024-06-27 22:42:35,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5912, PETRI_PLACES=153, PETRI_TRANSITIONS=419} [2024-06-27 22:42:35,997 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2024-06-27 22:42:35,997 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 419 transitions, 5912 flow [2024-06-27 22:42:35,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:35,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:35,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:42:35,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:35,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1252173282, now seen corresponding path program 1 times [2024-06-27 22:42:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:35,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302692236] [2024-06-27 22:42:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:37,243 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 22:42:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302692236] [2024-06-27 22:42:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302692236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486907093] [2024-06-27 22:42:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:37,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:37,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:37,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 419 transitions, 5912 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:37,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:37,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:37,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:38,856 INFO L124 PetriNetUnfolderBase]: 6142/9286 cut-off events. [2024-06-27 22:42:38,856 INFO L125 PetriNetUnfolderBase]: For 99150/99153 co-relation queries the response was YES. [2024-06-27 22:42:38,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53156 conditions, 9286 events. 6142/9286 cut-off events. For 99150/99153 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 53685 event pairs, 1679 based on Foata normal form. 4/9103 useless extension candidates. Maximal degree in co-relation 53080. Up to 8029 conditions per place. [2024-06-27 22:42:38,959 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 436 selfloop transitions, 91 changer transitions 0/534 dead transitions. [2024-06-27 22:42:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 534 transitions, 8290 flow [2024-06-27 22:42:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:42:38,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:42:38,962 INFO L175 Difference]: Start difference. First operand has 153 places, 419 transitions, 5912 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:42:38,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 534 transitions, 8290 flow [2024-06-27 22:42:39,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 534 transitions, 7862 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:42:39,245 INFO L231 Difference]: Finished difference. Result has 158 places, 456 transitions, 6428 flow [2024-06-27 22:42:39,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6428, PETRI_PLACES=158, PETRI_TRANSITIONS=456} [2024-06-27 22:42:39,246 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 22:42:39,246 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 456 transitions, 6428 flow [2024-06-27 22:42:39,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:39,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:39,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:39,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:42:39,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:39,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1248454212, now seen corresponding path program 2 times [2024-06-27 22:42:39,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:39,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877199711] [2024-06-27 22:42:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:39,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:40,398 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 22:42:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877199711] [2024-06-27 22:42:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877199711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435208412] [2024-06-27 22:42:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:40,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:40,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 456 transitions, 6428 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:40,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:40,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:42,454 INFO L124 PetriNetUnfolderBase]: 6311/9520 cut-off events. [2024-06-27 22:42:42,455 INFO L125 PetriNetUnfolderBase]: For 112194/112197 co-relation queries the response was YES. [2024-06-27 22:42:42,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56734 conditions, 9520 events. 6311/9520 cut-off events. For 112194/112197 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 55085 event pairs, 1751 based on Foata normal form. 4/9339 useless extension candidates. Maximal degree in co-relation 56655. Up to 8446 conditions per place. [2024-06-27 22:42:42,553 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 460 selfloop transitions, 74 changer transitions 0/541 dead transitions. [2024-06-27 22:42:42,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 541 transitions, 8372 flow [2024-06-27 22:42:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:42:42,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 22:42:42,555 INFO L175 Difference]: Start difference. First operand has 158 places, 456 transitions, 6428 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:42:42,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 541 transitions, 8372 flow [2024-06-27 22:42:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 541 transitions, 8311 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:42:42,821 INFO L231 Difference]: Finished difference. Result has 166 places, 472 transitions, 6822 flow [2024-06-27 22:42:42,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6377, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6822, PETRI_PLACES=166, PETRI_TRANSITIONS=472} [2024-06-27 22:42:42,822 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 114 predicate places. [2024-06-27 22:42:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 472 transitions, 6822 flow [2024-06-27 22:42:42,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:42,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:42,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:42:42,823 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:42,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 415436945, now seen corresponding path program 1 times [2024-06-27 22:42:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890443459] [2024-06-27 22:42:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:44,241 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 22:42:44,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:44,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890443459] [2024-06-27 22:42:44,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890443459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:44,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:44,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:44,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978182458] [2024-06-27 22:42:44,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:44,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:44,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:44,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:44,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:44,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 472 transitions, 6822 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:44,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:44,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:45,924 INFO L124 PetriNetUnfolderBase]: 6306/9515 cut-off events. [2024-06-27 22:42:45,924 INFO L125 PetriNetUnfolderBase]: For 119980/119983 co-relation queries the response was YES. [2024-06-27 22:42:45,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57834 conditions, 9515 events. 6306/9515 cut-off events. For 119980/119983 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 55036 event pairs, 1766 based on Foata normal form. 2/9331 useless extension candidates. Maximal degree in co-relation 57751. Up to 8612 conditions per place. [2024-06-27 22:42:46,030 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 452 selfloop transitions, 59 changer transitions 0/518 dead transitions. [2024-06-27 22:42:46,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 518 transitions, 8182 flow [2024-06-27 22:42:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:42:46,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-06-27 22:42:46,031 INFO L175 Difference]: Start difference. First operand has 166 places, 472 transitions, 6822 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:42:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 518 transitions, 8182 flow [2024-06-27 22:42:46,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 518 transitions, 8097 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:42:46,318 INFO L231 Difference]: Finished difference. Result has 172 places, 474 transitions, 6912 flow [2024-06-27 22:42:46,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6742, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6912, PETRI_PLACES=172, PETRI_TRANSITIONS=474} [2024-06-27 22:42:46,319 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-27 22:42:46,320 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 474 transitions, 6912 flow [2024-06-27 22:42:46,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:46,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:46,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:46,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:42:46,320 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:46,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash 415436728, now seen corresponding path program 3 times [2024-06-27 22:42:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382754823] [2024-06-27 22:42:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382754823] [2024-06-27 22:42:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382754823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:47,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894633339] [2024-06-27 22:42:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:47,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:47,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:47,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 474 transitions, 6912 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:47,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:47,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:47,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:49,419 INFO L124 PetriNetUnfolderBase]: 6296/9502 cut-off events. [2024-06-27 22:42:49,420 INFO L125 PetriNetUnfolderBase]: For 123792/123795 co-relation queries the response was YES. [2024-06-27 22:42:49,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58222 conditions, 9502 events. 6296/9502 cut-off events. For 123792/123795 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54946 event pairs, 1755 based on Foata normal form. 4/9320 useless extension candidates. Maximal degree in co-relation 58136. Up to 8435 conditions per place. [2024-06-27 22:42:49,519 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 466 selfloop transitions, 81 changer transitions 0/554 dead transitions. [2024-06-27 22:42:49,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 554 transitions, 8592 flow [2024-06-27 22:42:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-06-27 22:42:49,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021739130434782 [2024-06-27 22:42:49,520 INFO L175 Difference]: Start difference. First operand has 172 places, 474 transitions, 6912 flow. Second operand 10 states and 231 transitions. [2024-06-27 22:42:49,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 554 transitions, 8592 flow [2024-06-27 22:42:49,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 554 transitions, 8459 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:42:49,800 INFO L231 Difference]: Finished difference. Result has 176 places, 476 transitions, 6984 flow [2024-06-27 22:42:49,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6984, PETRI_PLACES=176, PETRI_TRANSITIONS=476} [2024-06-27 22:42:49,801 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-06-27 22:42:49,801 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 476 transitions, 6984 flow [2024-06-27 22:42:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:49,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:49,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:42:49,801 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:49,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 415430993, now seen corresponding path program 3 times [2024-06-27 22:42:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532346825] [2024-06-27 22:42:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:51,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532346825] [2024-06-27 22:42:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532346825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:51,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:51,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:51,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674328334] [2024-06-27 22:42:51,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:51,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:51,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 476 transitions, 6984 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:51,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:51,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:51,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:53,299 INFO L124 PetriNetUnfolderBase]: 6199/9427 cut-off events. [2024-06-27 22:42:53,299 INFO L125 PetriNetUnfolderBase]: For 137922/138272 co-relation queries the response was YES. [2024-06-27 22:42:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58778 conditions, 9427 events. 6199/9427 cut-off events. For 137922/138272 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 55374 event pairs, 1614 based on Foata normal form. 44/9131 useless extension candidates. Maximal degree in co-relation 58692. Up to 7946 conditions per place. [2024-06-27 22:42:53,374 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 389 selfloop transitions, 143 changer transitions 0/573 dead transitions. [2024-06-27 22:42:53,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 573 transitions, 9205 flow [2024-06-27 22:42:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:42:53,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 22:42:53,376 INFO L175 Difference]: Start difference. First operand has 176 places, 476 transitions, 6984 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:42:53,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 573 transitions, 9205 flow [2024-06-27 22:42:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 573 transitions, 9041 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:53,621 INFO L231 Difference]: Finished difference. Result has 178 places, 514 transitions, 7812 flow [2024-06-27 22:42:53,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6820, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7812, PETRI_PLACES=178, PETRI_TRANSITIONS=514} [2024-06-27 22:42:53,622 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-27 22:42:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 514 transitions, 7812 flow [2024-06-27 22:42:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:53,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:53,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:53,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:42:53,623 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:53,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash -234373794, now seen corresponding path program 4 times [2024-06-27 22:42:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:53,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898695932] [2024-06-27 22:42:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898695932] [2024-06-27 22:42:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898695932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:54,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506222544] [2024-06-27 22:42:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:54,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:54,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:54,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:54,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 514 transitions, 7812 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:54,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:54,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:54,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:56,669 INFO L124 PetriNetUnfolderBase]: 6579/9873 cut-off events. [2024-06-27 22:42:56,669 INFO L125 PetriNetUnfolderBase]: For 143675/143678 co-relation queries the response was YES. [2024-06-27 22:42:56,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62856 conditions, 9873 events. 6579/9873 cut-off events. For 143675/143678 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 56959 event pairs, 1821 based on Foata normal form. 6/9694 useless extension candidates. Maximal degree in co-relation 62767. Up to 9128 conditions per place. [2024-06-27 22:42:56,762 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 523 selfloop transitions, 24 changer transitions 0/554 dead transitions. [2024-06-27 22:42:56,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 554 transitions, 9142 flow [2024-06-27 22:42:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:42:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:42:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:42:56,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 22:42:56,763 INFO L175 Difference]: Start difference. First operand has 178 places, 514 transitions, 7812 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:42:56,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 554 transitions, 9142 flow [2024-06-27 22:42:57,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 554 transitions, 8920 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:57,078 INFO L231 Difference]: Finished difference. Result has 181 places, 517 transitions, 7695 flow [2024-06-27 22:42:57,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7590, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7695, PETRI_PLACES=181, PETRI_TRANSITIONS=517} [2024-06-27 22:42:57,078 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2024-06-27 22:42:57,079 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 517 transitions, 7695 flow [2024-06-27 22:42:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:42:57,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:57,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:57,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:42:57,079 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:42:57,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1608616991, now seen corresponding path program 4 times [2024-06-27 22:42:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595997453] [2024-06-27 22:42:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:57,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:58,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595997453] [2024-06-27 22:42:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595997453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:58,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:42:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717312920] [2024-06-27 22:42:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:42:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:42:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:42:58,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:58,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 517 transitions, 7695 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:42:58,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:58,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:58,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:00,300 INFO L124 PetriNetUnfolderBase]: 6377/9656 cut-off events. [2024-06-27 22:43:00,300 INFO L125 PetriNetUnfolderBase]: For 155122/155462 co-relation queries the response was YES. [2024-06-27 22:43:00,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61281 conditions, 9656 events. 6377/9656 cut-off events. For 155122/155462 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56634 event pairs, 1516 based on Foata normal form. 85/9409 useless extension candidates. Maximal degree in co-relation 61191. Up to 8000 conditions per place. [2024-06-27 22:43:00,410 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 433 selfloop transitions, 135 changer transitions 0/610 dead transitions. [2024-06-27 22:43:00,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 610 transitions, 9849 flow [2024-06-27 22:43:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:43:00,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 22:43:00,412 INFO L175 Difference]: Start difference. First operand has 181 places, 517 transitions, 7695 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:43:00,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 610 transitions, 9849 flow [2024-06-27 22:43:00,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 610 transitions, 9775 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:00,802 INFO L231 Difference]: Finished difference. Result has 185 places, 550 transitions, 8502 flow [2024-06-27 22:43:00,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8502, PETRI_PLACES=185, PETRI_TRANSITIONS=550} [2024-06-27 22:43:00,803 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 22:43:00,803 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 550 transitions, 8502 flow [2024-06-27 22:43:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 22:43:00,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:00,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:00,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:43:00,804 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:00,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash -242624754, now seen corresponding path program 5 times [2024-06-27 22:43:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452845582] [2024-06-27 22:43:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452845582] [2024-06-27 22:43:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452845582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:01,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106047267] [2024-06-27 22:43:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:01,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:01,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:01,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:01,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 550 transitions, 8502 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:01,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:03,804 INFO L124 PetriNetUnfolderBase]: 6769/10153 cut-off events. [2024-06-27 22:43:03,804 INFO L125 PetriNetUnfolderBase]: For 167516/167519 co-relation queries the response was YES. [2024-06-27 22:43:03,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67898 conditions, 10153 events. 6769/10153 cut-off events. For 167516/167519 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 58647 event pairs, 1810 based on Foata normal form. 4/9967 useless extension candidates. Maximal degree in co-relation 67805. Up to 9102 conditions per place. [2024-06-27 22:43:03,913 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 536 selfloop transitions, 74 changer transitions 0/617 dead transitions. [2024-06-27 22:43:03,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 617 transitions, 10447 flow [2024-06-27 22:43:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:43:03,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 22:43:03,915 INFO L175 Difference]: Start difference. First operand has 185 places, 550 transitions, 8502 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:43:03,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 617 transitions, 10447 flow [2024-06-27 22:43:04,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 617 transitions, 10370 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-27 22:43:04,394 INFO L231 Difference]: Finished difference. Result has 192 places, 558 transitions, 8781 flow [2024-06-27 22:43:04,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8431, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8781, PETRI_PLACES=192, PETRI_TRANSITIONS=558} [2024-06-27 22:43:04,395 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 140 predicate places. [2024-06-27 22:43:04,395 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 558 transitions, 8781 flow [2024-06-27 22:43:04,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:04,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:04,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:43:04,396 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:04,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1608611039, now seen corresponding path program 2 times [2024-06-27 22:43:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809086495] [2024-06-27 22:43:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:05,790 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 22:43:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:05,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809086495] [2024-06-27 22:43:05,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809086495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:05,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515167519] [2024-06-27 22:43:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:05,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:05,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 558 transitions, 8781 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:05,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:05,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:05,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:07,683 INFO L124 PetriNetUnfolderBase]: 6776/10125 cut-off events. [2024-06-27 22:43:07,683 INFO L125 PetriNetUnfolderBase]: For 175987/175990 co-relation queries the response was YES. [2024-06-27 22:43:07,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68800 conditions, 10125 events. 6776/10125 cut-off events. For 175987/175990 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 58092 event pairs, 1811 based on Foata normal form. 2/9949 useless extension candidates. Maximal degree in co-relation 68703. Up to 9311 conditions per place. [2024-06-27 22:43:07,797 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 518 selfloop transitions, 70 changer transitions 0/595 dead transitions. [2024-06-27 22:43:07,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 595 transitions, 10197 flow [2024-06-27 22:43:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 22:43:07,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483695652173913 [2024-06-27 22:43:07,799 INFO L175 Difference]: Start difference. First operand has 192 places, 558 transitions, 8781 flow. Second operand 8 states and 165 transitions. [2024-06-27 22:43:07,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 595 transitions, 10197 flow [2024-06-27 22:43:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 595 transitions, 9926 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:08,335 INFO L231 Difference]: Finished difference. Result has 194 places, 565 transitions, 8784 flow [2024-06-27 22:43:08,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8526, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8784, PETRI_PLACES=194, PETRI_TRANSITIONS=565} [2024-06-27 22:43:08,336 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-27 22:43:08,336 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 565 transitions, 8784 flow [2024-06-27 22:43:08,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:08,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:08,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:08,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:43:08,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:08,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:08,337 INFO L85 PathProgramCache]: Analyzing trace with hash 754783506, now seen corresponding path program 6 times [2024-06-27 22:43:08,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191178346] [2024-06-27 22:43:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:09,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191178346] [2024-06-27 22:43:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191178346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:09,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:09,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:09,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640037902] [2024-06-27 22:43:09,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:09,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:09,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:09,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:09,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:09,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 565 transitions, 8784 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:09,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:09,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:09,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:11,511 INFO L124 PetriNetUnfolderBase]: 6766/10150 cut-off events. [2024-06-27 22:43:11,511 INFO L125 PetriNetUnfolderBase]: For 180472/180475 co-relation queries the response was YES. [2024-06-27 22:43:11,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68346 conditions, 10150 events. 6766/10150 cut-off events. For 180472/180475 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 58667 event pairs, 1807 based on Foata normal form. 4/9962 useless extension candidates. Maximal degree in co-relation 68249. Up to 9102 conditions per place. [2024-06-27 22:43:11,617 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 545 selfloop transitions, 73 changer transitions 0/625 dead transitions. [2024-06-27 22:43:11,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 625 transitions, 10477 flow [2024-06-27 22:43:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 22:43:11,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-27 22:43:11,624 INFO L175 Difference]: Start difference. First operand has 194 places, 565 transitions, 8784 flow. Second operand 7 states and 164 transitions. [2024-06-27 22:43:11,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 625 transitions, 10477 flow [2024-06-27 22:43:12,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 625 transitions, 10305 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:12,053 INFO L231 Difference]: Finished difference. Result has 196 places, 570 transitions, 8898 flow [2024-06-27 22:43:12,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8625, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8898, PETRI_PLACES=196, PETRI_TRANSITIONS=570} [2024-06-27 22:43:12,053 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 22:43:12,053 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 570 transitions, 8898 flow [2024-06-27 22:43:12,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:12,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:12,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:12,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:43:12,054 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:12,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash -234077837, now seen corresponding path program 3 times [2024-06-27 22:43:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859148499] [2024-06-27 22:43:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:13,173 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 22:43:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859148499] [2024-06-27 22:43:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859148499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:13,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212017109] [2024-06-27 22:43:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:13,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:13,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 570 transitions, 8898 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:13,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:13,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:13,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:15,303 INFO L124 PetriNetUnfolderBase]: 6784/10128 cut-off events. [2024-06-27 22:43:15,304 INFO L125 PetriNetUnfolderBase]: For 187312/187315 co-relation queries the response was YES. [2024-06-27 22:43:15,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69031 conditions, 10128 events. 6784/10128 cut-off events. For 187312/187315 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 58055 event pairs, 1838 based on Foata normal form. 4/9955 useless extension candidates. Maximal degree in co-relation 68932. Up to 9461 conditions per place. [2024-06-27 22:43:15,411 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 570 selfloop transitions, 30 changer transitions 0/607 dead transitions. [2024-06-27 22:43:15,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 607 transitions, 10322 flow [2024-06-27 22:43:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 22:43:15,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658385093167702 [2024-06-27 22:43:15,413 INFO L175 Difference]: Start difference. First operand has 196 places, 570 transitions, 8898 flow. Second operand 7 states and 150 transitions. [2024-06-27 22:43:15,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 607 transitions, 10322 flow [2024-06-27 22:43:15,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 607 transitions, 10233 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:43:15,863 INFO L231 Difference]: Finished difference. Result has 201 places, 578 transitions, 8999 flow [2024-06-27 22:43:15,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8809, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8999, PETRI_PLACES=201, PETRI_TRANSITIONS=578} [2024-06-27 22:43:15,863 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2024-06-27 22:43:15,864 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 578 transitions, 8999 flow [2024-06-27 22:43:15,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:15,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:15,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:43:15,864 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:15,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash -202316391, now seen corresponding path program 5 times [2024-06-27 22:43:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:15,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281510092] [2024-06-27 22:43:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:17,224 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 22:43:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281510092] [2024-06-27 22:43:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281510092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655996728] [2024-06-27 22:43:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:17,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:17,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:43:17,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 578 transitions, 8999 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:17,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:17,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:43:17,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:19,576 INFO L124 PetriNetUnfolderBase]: 6606/10152 cut-off events. [2024-06-27 22:43:19,577 INFO L125 PetriNetUnfolderBase]: For 220296/220854 co-relation queries the response was YES. [2024-06-27 22:43:19,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70204 conditions, 10152 events. 6606/10152 cut-off events. For 220296/220854 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 61673 event pairs, 1369 based on Foata normal form. 204/9854 useless extension candidates. Maximal degree in co-relation 70103. Up to 6683 conditions per place. [2024-06-27 22:43:19,719 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 295 selfloop transitions, 314 changer transitions 0/714 dead transitions. [2024-06-27 22:43:19,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 714 transitions, 11748 flow [2024-06-27 22:43:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 22:43:19,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-27 22:43:19,721 INFO L175 Difference]: Start difference. First operand has 201 places, 578 transitions, 8999 flow. Second operand 7 states and 196 transitions. [2024-06-27 22:43:19,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 714 transitions, 11748 flow [2024-06-27 22:43:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 714 transitions, 11691 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 22:43:20,237 INFO L231 Difference]: Finished difference. Result has 210 places, 659 transitions, 10988 flow [2024-06-27 22:43:20,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8942, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10988, PETRI_PLACES=210, PETRI_TRANSITIONS=659} [2024-06-27 22:43:20,238 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 158 predicate places. [2024-06-27 22:43:20,238 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 659 transitions, 10988 flow [2024-06-27 22:43:20,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:20,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:20,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:43:20,238 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:20,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1520784483, now seen corresponding path program 6 times [2024-06-27 22:43:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921299686] [2024-06-27 22:43:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:21,699 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 22:43:21,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921299686] [2024-06-27 22:43:21,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921299686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:21,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:21,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511243554] [2024-06-27 22:43:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:21,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:21,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:21,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:43:21,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 659 transitions, 10988 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:21,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:21,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:43:21,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:23,806 INFO L124 PetriNetUnfolderBase]: 6706/10346 cut-off events. [2024-06-27 22:43:23,807 INFO L125 PetriNetUnfolderBase]: For 253638/254212 co-relation queries the response was YES. [2024-06-27 22:43:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78107 conditions, 10346 events. 6706/10346 cut-off events. For 253638/254212 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 62844 event pairs, 1651 based on Foata normal form. 220/10111 useless extension candidates. Maximal degree in co-relation 78001. Up to 7947 conditions per place. [2024-06-27 22:43:23,951 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 389 selfloop transitions, 317 changer transitions 0/762 dead transitions. [2024-06-27 22:43:23,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 762 transitions, 13665 flow [2024-06-27 22:43:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:43:23,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838509316770186 [2024-06-27 22:43:23,955 INFO L175 Difference]: Start difference. First operand has 210 places, 659 transitions, 10988 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:43:23,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 762 transitions, 13665 flow [2024-06-27 22:43:24,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 762 transitions, 13521 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-27 22:43:24,622 INFO L231 Difference]: Finished difference. Result has 217 places, 712 transitions, 12717 flow [2024-06-27 22:43:24,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10888, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12717, PETRI_PLACES=217, PETRI_TRANSITIONS=712} [2024-06-27 22:43:24,623 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 165 predicate places. [2024-06-27 22:43:24,623 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 712 transitions, 12717 flow [2024-06-27 22:43:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:24,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:24,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:43:24,624 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:24,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2077656393, now seen corresponding path program 7 times [2024-06-27 22:43:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455346703] [2024-06-27 22:43:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:25,952 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 22:43:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455346703] [2024-06-27 22:43:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455346703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:25,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667497741] [2024-06-27 22:43:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:26,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:43:26,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 712 transitions, 12717 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:26,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:26,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:43:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:28,235 INFO L124 PetriNetUnfolderBase]: 6844/10526 cut-off events. [2024-06-27 22:43:28,235 INFO L125 PetriNetUnfolderBase]: For 278231/279164 co-relation queries the response was YES. [2024-06-27 22:43:28,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83382 conditions, 10526 events. 6844/10526 cut-off events. For 278231/279164 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63770 event pairs, 1677 based on Foata normal form. 234/10308 useless extension candidates. Maximal degree in co-relation 83273. Up to 7693 conditions per place. [2024-06-27 22:43:28,391 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 449 selfloop transitions, 312 changer transitions 0/817 dead transitions. [2024-06-27 22:43:28,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 817 transitions, 15784 flow [2024-06-27 22:43:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:43:28,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:43:28,393 INFO L175 Difference]: Start difference. First operand has 217 places, 712 transitions, 12717 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:43:28,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 817 transitions, 15784 flow [2024-06-27 22:43:29,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 817 transitions, 15571 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-27 22:43:29,179 INFO L231 Difference]: Finished difference. Result has 224 places, 749 transitions, 14165 flow [2024-06-27 22:43:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12522, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14165, PETRI_PLACES=224, PETRI_TRANSITIONS=749} [2024-06-27 22:43:29,180 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 22:43:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 749 transitions, 14165 flow [2024-06-27 22:43:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:29,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:29,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:29,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:43:29,181 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:29,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2037957638, now seen corresponding path program 7 times [2024-06-27 22:43:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:29,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083170261] [2024-06-27 22:43:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:29,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:30,802 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 22:43:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083170261] [2024-06-27 22:43:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083170261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:30,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:30,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698475993] [2024-06-27 22:43:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:30,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:30,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:30,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 749 transitions, 14165 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:30,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:30,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:30,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:34,111 INFO L124 PetriNetUnfolderBase]: 7777/11718 cut-off events. [2024-06-27 22:43:34,111 INFO L125 PetriNetUnfolderBase]: For 298041/298046 co-relation queries the response was YES. [2024-06-27 22:43:34,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95365 conditions, 11718 events. 7777/11718 cut-off events. For 298041/298046 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 69429 event pairs, 1797 based on Foata normal form. 4/11483 useless extension candidates. Maximal degree in co-relation 95252. Up to 10218 conditions per place. [2024-06-27 22:43:34,245 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 688 selfloop transitions, 184 changer transitions 0/879 dead transitions. [2024-06-27 22:43:34,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 879 transitions, 17597 flow [2024-06-27 22:43:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-27 22:43:34,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516908212560384 [2024-06-27 22:43:34,247 INFO L175 Difference]: Start difference. First operand has 224 places, 749 transitions, 14165 flow. Second operand 9 states and 205 transitions. [2024-06-27 22:43:34,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 879 transitions, 17597 flow [2024-06-27 22:43:35,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 879 transitions, 17310 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-27 22:43:35,049 INFO L231 Difference]: Finished difference. Result has 233 places, 829 transitions, 15737 flow [2024-06-27 22:43:35,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13884, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15737, PETRI_PLACES=233, PETRI_TRANSITIONS=829} [2024-06-27 22:43:35,050 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-27 22:43:35,050 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 829 transitions, 15737 flow [2024-06-27 22:43:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:35,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:35,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:35,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:43:35,051 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 250792914, now seen corresponding path program 8 times [2024-06-27 22:43:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793599201] [2024-06-27 22:43:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:35,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:37,086 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 22:43:37,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793599201] [2024-06-27 22:43:37,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793599201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:37,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206602801] [2024-06-27 22:43:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:37,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:37,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 829 transitions, 15737 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:37,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:37,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:37,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:40,350 INFO L124 PetriNetUnfolderBase]: 7949/11962 cut-off events. [2024-06-27 22:43:40,351 INFO L125 PetriNetUnfolderBase]: For 308105/308112 co-relation queries the response was YES. [2024-06-27 22:43:40,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99876 conditions, 11962 events. 7949/11962 cut-off events. For 308105/308112 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 70883 event pairs, 1806 based on Foata normal form. 7/11730 useless extension candidates. Maximal degree in co-relation 99758. Up to 10406 conditions per place. [2024-06-27 22:43:40,510 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 691 selfloop transitions, 235 changer transitions 0/933 dead transitions. [2024-06-27 22:43:40,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 933 transitions, 18926 flow [2024-06-27 22:43:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 22:43:40,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 22:43:40,512 INFO L175 Difference]: Start difference. First operand has 233 places, 829 transitions, 15737 flow. Second operand 9 states and 204 transitions. [2024-06-27 22:43:40,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 933 transitions, 18926 flow [2024-06-27 22:43:41,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 933 transitions, 18507 flow, removed 173 selfloop flow, removed 3 redundant places. [2024-06-27 22:43:41,451 INFO L231 Difference]: Finished difference. Result has 242 places, 887 transitions, 16933 flow [2024-06-27 22:43:41,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15504, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16933, PETRI_PLACES=242, PETRI_TRANSITIONS=887} [2024-06-27 22:43:41,452 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-27 22:43:41,453 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 887 transitions, 16933 flow [2024-06-27 22:43:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:41,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:43:41,453 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:41,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1485183991, now seen corresponding path program 4 times [2024-06-27 22:43:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143085603] [2024-06-27 22:43:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:43,011 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 22:43:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143085603] [2024-06-27 22:43:43,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143085603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:43,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144774998] [2024-06-27 22:43:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:43,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:43,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 887 transitions, 16933 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:43,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:43,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:43,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:46,320 INFO L124 PetriNetUnfolderBase]: 8000/12031 cut-off events. [2024-06-27 22:43:46,321 INFO L125 PetriNetUnfolderBase]: For 316116/316121 co-relation queries the response was YES. [2024-06-27 22:43:46,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101460 conditions, 12031 events. 8000/12031 cut-off events. For 316116/316121 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 71198 event pairs, 1838 based on Foata normal form. 4/11794 useless extension candidates. Maximal degree in co-relation 101337. Up to 10888 conditions per place. [2024-06-27 22:43:46,470 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 846 selfloop transitions, 97 changer transitions 0/950 dead transitions. [2024-06-27 22:43:46,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 950 transitions, 19381 flow [2024-06-27 22:43:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:43:46,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:43:46,472 INFO L175 Difference]: Start difference. First operand has 242 places, 887 transitions, 16933 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:43:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 950 transitions, 19381 flow [2024-06-27 22:43:47,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 950 transitions, 19007 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-27 22:43:47,722 INFO L231 Difference]: Finished difference. Result has 247 places, 916 transitions, 17251 flow [2024-06-27 22:43:47,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=16559, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=804, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17251, PETRI_PLACES=247, PETRI_TRANSITIONS=916} [2024-06-27 22:43:47,723 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 22:43:47,723 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 916 transitions, 17251 flow [2024-06-27 22:43:47,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:47,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:47,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:43:47,724 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:47,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 254517564, now seen corresponding path program 9 times [2024-06-27 22:43:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187368868] [2024-06-27 22:43:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187368868] [2024-06-27 22:43:49,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187368868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:49,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:49,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887555744] [2024-06-27 22:43:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:49,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:49,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:49,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:49,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 916 transitions, 17251 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:49,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:49,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:49,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:53,762 INFO L124 PetriNetUnfolderBase]: 8072/12133 cut-off events. [2024-06-27 22:43:53,763 INFO L125 PetriNetUnfolderBase]: For 336200/336205 co-relation queries the response was YES. [2024-06-27 22:43:53,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103394 conditions, 12133 events. 8072/12133 cut-off events. For 336200/336205 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71791 event pairs, 1829 based on Foata normal form. 5/11897 useless extension candidates. Maximal degree in co-relation 103270. Up to 10983 conditions per place. [2024-06-27 22:43:53,912 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 877 selfloop transitions, 117 changer transitions 0/1001 dead transitions. [2024-06-27 22:43:53,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1001 transitions, 20148 flow [2024-06-27 22:43:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-06-27 22:43:53,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723320158102767 [2024-06-27 22:43:53,914 INFO L175 Difference]: Start difference. First operand has 247 places, 916 transitions, 17251 flow. Second operand 11 states and 239 transitions. [2024-06-27 22:43:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1001 transitions, 20148 flow [2024-06-27 22:43:54,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1001 transitions, 20043 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 22:43:54,917 INFO L231 Difference]: Finished difference. Result has 258 places, 944 transitions, 17928 flow [2024-06-27 22:43:54,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=17146, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17928, PETRI_PLACES=258, PETRI_TRANSITIONS=944} [2024-06-27 22:43:54,918 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-06-27 22:43:54,918 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 944 transitions, 17928 flow [2024-06-27 22:43:54,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:54,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:54,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:54,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:43:54,919 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:43:54,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 254511984, now seen corresponding path program 10 times [2024-06-27 22:43:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143333690] [2024-06-27 22:43:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:57,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143333690] [2024-06-27 22:43:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143333690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:57,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812320675] [2024-06-27 22:43:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:57,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:57,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 944 transitions, 17928 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:43:57,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:57,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:57,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:00,980 INFO L124 PetriNetUnfolderBase]: 8064/12122 cut-off events. [2024-06-27 22:44:00,980 INFO L125 PetriNetUnfolderBase]: For 344107/344112 co-relation queries the response was YES. [2024-06-27 22:44:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104029 conditions, 12122 events. 8064/12122 cut-off events. For 344107/344112 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71729 event pairs, 1829 based on Foata normal form. 5/11886 useless extension candidates. Maximal degree in co-relation 103900. Up to 10975 conditions per place. [2024-06-27 22:44:01,332 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 866 selfloop transitions, 115 changer transitions 0/988 dead transitions. [2024-06-27 22:44:01,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 988 transitions, 20147 flow [2024-06-27 22:44:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:44:01,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806763285024155 [2024-06-27 22:44:01,334 INFO L175 Difference]: Start difference. First operand has 258 places, 944 transitions, 17928 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:44:01,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 988 transitions, 20147 flow [2024-06-27 22:44:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 988 transitions, 19865 flow, removed 115 selfloop flow, removed 4 redundant places. [2024-06-27 22:44:02,423 INFO L231 Difference]: Finished difference. Result has 263 places, 944 transitions, 17896 flow [2024-06-27 22:44:02,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=17646, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17896, PETRI_PLACES=263, PETRI_TRANSITIONS=944} [2024-06-27 22:44:02,424 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-27 22:44:02,424 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 944 transitions, 17896 flow [2024-06-27 22:44:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 22:44:02,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:02,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:44:02,425 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:44:02,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1445853919, now seen corresponding path program 8 times [2024-06-27 22:44:02,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758150579] [2024-06-27 22:44:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758150579] [2024-06-27 22:44:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758150579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:04,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:04,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:04,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060894508] [2024-06-27 22:44:04,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:04,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:04,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:04,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:04,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:04,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:44:04,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 944 transitions, 17896 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:04,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:04,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:44:04,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:07,566 INFO L124 PetriNetUnfolderBase]: 7440/11397 cut-off events. [2024-06-27 22:44:07,567 INFO L125 PetriNetUnfolderBase]: For 349494/350166 co-relation queries the response was YES. [2024-06-27 22:44:07,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97705 conditions, 11397 events. 7440/11397 cut-off events. For 349494/350166 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 69359 event pairs, 1657 based on Foata normal form. 128/11096 useless extension candidates. Maximal degree in co-relation 97574. Up to 9102 conditions per place. [2024-06-27 22:44:07,724 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 689 selfloop transitions, 216 changer transitions 0/1034 dead transitions. [2024-06-27 22:44:07,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1034 transitions, 21168 flow [2024-06-27 22:44:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:44:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:44:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 22:44:07,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838509316770186 [2024-06-27 22:44:07,726 INFO L175 Difference]: Start difference. First operand has 263 places, 944 transitions, 17896 flow. Second operand 7 states and 188 transitions. [2024-06-27 22:44:07,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1034 transitions, 21168 flow [2024-06-27 22:44:08,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1034 transitions, 20892 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:08,865 INFO L231 Difference]: Finished difference. Result has 264 places, 975 transitions, 18922 flow [2024-06-27 22:44:08,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=17640, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18922, PETRI_PLACES=264, PETRI_TRANSITIONS=975} [2024-06-27 22:44:08,867 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 22:44:08,867 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 975 transitions, 18922 flow [2024-06-27 22:44:08,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:08,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:08,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:08,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:44:08,868 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:44:08,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash -923813719, now seen corresponding path program 1 times [2024-06-27 22:44:08,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562249167] [2024-06-27 22:44:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:08,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:10,281 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 22:44:10,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:10,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562249167] [2024-06-27 22:44:10,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562249167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:10,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:10,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:44:10,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817504261] [2024-06-27 22:44:10,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:10,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:44:10,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:44:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:44:10,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:44:10,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 975 transitions, 18922 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 22:44:10,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:10,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:44:10,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:13,696 INFO L124 PetriNetUnfolderBase]: 7883/11882 cut-off events. [2024-06-27 22:44:13,697 INFO L125 PetriNetUnfolderBase]: For 377404/377902 co-relation queries the response was YES. [2024-06-27 22:44:13,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104585 conditions, 11882 events. 7883/11882 cut-off events. For 377404/377902 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 70702 event pairs, 1841 based on Foata normal form. 384/11984 useless extension candidates. Maximal degree in co-relation 104452. Up to 10630 conditions per place. [2024-06-27 22:44:13,884 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 904 selfloop transitions, 22 changer transitions 0/991 dead transitions. [2024-06-27 22:44:13,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 991 transitions, 20898 flow [2024-06-27 22:44:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:44:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:44:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 22:44:14,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-06-27 22:44:14,020 INFO L175 Difference]: Start difference. First operand has 264 places, 975 transitions, 18922 flow. Second operand 5 states and 112 transitions. [2024-06-27 22:44:14,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 991 transitions, 20898 flow [2024-06-27 22:44:14,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 991 transitions, 20444 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-27 22:44:14,948 INFO L231 Difference]: Finished difference. Result has 266 places, 977 transitions, 18561 flow [2024-06-27 22:44:14,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=18474, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=18561, PETRI_PLACES=266, PETRI_TRANSITIONS=977} [2024-06-27 22:44:14,949 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 214 predicate places. [2024-06-27 22:44:14,949 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 977 transitions, 18561 flow [2024-06-27 22:44:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 22:44:14,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:14,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:14,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:44:14,950 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:44:14,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -165527104, now seen corresponding path program 1 times [2024-06-27 22:44:14,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:14,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640622387] [2024-06-27 22:44:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:16,642 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 22:44:16,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640622387] [2024-06-27 22:44:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640622387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:16,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120460035] [2024-06-27 22:44:16,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:16,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:16,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:16,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:44:16,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 977 transitions, 18561 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:16,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:16,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:44:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand