./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_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/safe026_power.oepc_power.opt_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/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe026_power.oepc_power.opt_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 22:52:26,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:52:26,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:52:26,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:52:26,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:52:26,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:52:26,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:52:26,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:52:26,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:52:26,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:52:26,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:52:26,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:52:26,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:52:26,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:52:26,267 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:52:26,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:52:26,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:52:26,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:52:26,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:52:26,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:52:26,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:52:26,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:52:26,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:52:26,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:52:26,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:52:26,270 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:52:26,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:52:26,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:52:26,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:52:26,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:52:26,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:52:26,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:52:26,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:52:26,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:52:26,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:52:26,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:52:26,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:52:26,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:52:26,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:52:26,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:52:26,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:52:26,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:52:26,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:52:26,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:52:26,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:52:26,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:52:26,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:52:26,545 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:52:26,545 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:52:26,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 22:52:26,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:52:26,626 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:52:26,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:52:27,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:52:28,016 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:52:28,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:52:28,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9769f4b/d5f89349a4164068b717533d0c63a2e1/FLAG4b994368e [2024-06-27 22:52:28,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9769f4b/d5f89349a4164068b717533d0c63a2e1 [2024-06-27 22:52:28,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:52:28,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:52:28,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:52:28,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:52:28,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:52:28,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:52:26" (1/2) ... [2024-06-27 22:52:28,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539c1c6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:52:28, skipping insertion in model container [2024-06-27 22:52:28,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:52:26" (1/2) ... [2024-06-27 22:52:28,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@397a24b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:52:28, skipping insertion in model container [2024-06-27 22:52:28,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:52:28" (2/2) ... [2024-06-27 22:52:28,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539c1c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28, skipping insertion in model container [2024-06-27 22:52:28,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:52:28" (2/2) ... [2024-06-27 22:52:28,057 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:52:28,095 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:52:28,097 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:52:28,097 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:52:28,097 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:52:28,097 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:52:28,098 INFO L106 edCorrectnessWitness]: ghost_update [L829-L829] multithreaded = 1; [2024-06-27 22:52:28,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:52:28,330 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/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-27 22:52:28,524 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:52:28,531 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:52:28,560 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/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:52:28,707 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:52:28,747 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:52:28,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28 WrapperNode [2024-06-27 22:52:28,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:52:28,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:52:28,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:52:28,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:52:28,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,808 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2024-06-27 22:52:28,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:52:28,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:52:28,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:52:28,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:52:28,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,839 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 22:52:28,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:52:28,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:52:28,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:52:28,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:52:28,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (1/1) ... [2024-06-27 22:52:28,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:52:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:52:28,888 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 22:52:28,907 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 22:52:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:52:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:52:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:52:28,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:52:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:52:28,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:52:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:52:28,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:52:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:52:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:52:28,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:52:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:52:28,921 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 22:52:29,009 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:52:29,011 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:52:29,503 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:52:29,504 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:52:29,671 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:52:29,684 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:52:29,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:52:29 BoogieIcfgContainer [2024-06-27 22:52:29,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:52:29,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:52:29,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:52:29,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:52:29,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:52:26" (1/4) ... [2024-06-27 22:52:29,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7bae43 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:52:29, skipping insertion in model container [2024-06-27 22:52:29,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:52:28" (2/4) ... [2024-06-27 22:52:29,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7bae43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:52:29, skipping insertion in model container [2024-06-27 22:52:29,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:52:28" (3/4) ... [2024-06-27 22:52:29,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7bae43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:52:29, skipping insertion in model container [2024-06-27 22:52:29,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:52:29" (4/4) ... [2024-06-27 22:52:29,708 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 22:52:29,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:52:29,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:52:29,723 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:52:29,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:52:29,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 22:52:29,835 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 22:52:29,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:52:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-27 22:52:29,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-27 22:52:29,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 42 transitions, 93 flow [2024-06-27 22:52:29,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:52:29,860 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;@7aff464, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:52:29,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:52:29,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:52:29,866 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:52:29,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:52:29,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:29,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:52:29,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:29,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 350221384, now seen corresponding path program 1 times [2024-06-27 22:52:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:29,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67644664] [2024-06-27 22:52:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:30,160 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 22:52:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67644664] [2024-06-27 22:52:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67644664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:30,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:52:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174397083] [2024-06-27 22:52:30,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:30,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:52:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:52:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:52:30,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 45 [2024-06-27 22:52:30,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:30,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:30,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 45 [2024-06-27 22:52:30,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:30,510 INFO L124 PetriNetUnfolderBase]: 637/1268 cut-off events. [2024-06-27 22:52:30,510 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-27 22:52:30,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1268 events. 637/1268 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7624 event pairs, 489 based on Foata normal form. 48/1251 useless extension candidates. Maximal degree in co-relation 2269. Up to 793 conditions per place. [2024-06-27 22:52:30,523 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 33 selfloop transitions, 2 changer transitions 2/56 dead transitions. [2024-06-27 22:52:30,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 201 flow [2024-06-27 22:52:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:52:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:52:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-27 22:52:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7851851851851852 [2024-06-27 22:52:30,535 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 93 flow. Second operand 3 states and 106 transitions. [2024-06-27 22:52:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 201 flow [2024-06-27 22:52:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:30,542 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 88 flow [2024-06-27 22:52:30,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-27 22:52:30,546 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-06-27 22:52:30,546 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 88 flow [2024-06-27 22:52:30,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:30,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:30,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:52:30,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:52:30,547 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 22:52:30,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:30,548 INFO L85 PathProgramCache]: Analyzing trace with hash 350221188, now seen corresponding path program 1 times [2024-06-27 22:52:30,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:30,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433256500] [2024-06-27 22:52:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:31,608 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 22:52:31,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433256500] [2024-06-27 22:52:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433256500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:31,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:52:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183531307] [2024-06-27 22:52:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:31,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:52:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:52:31,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:52:31,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-27 22:52:31,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 88 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 22:52:31,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:31,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-27 22:52:31,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:32,076 INFO L124 PetriNetUnfolderBase]: 2245/3662 cut-off events. [2024-06-27 22:52:32,076 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-06-27 22:52:32,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 3662 events. 2245/3662 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 21734 event pairs, 1807 based on Foata normal form. 3/3535 useless extension candidates. Maximal degree in co-relation 7183. Up to 3256 conditions per place. [2024-06-27 22:52:32,144 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-06-27 22:52:32,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 210 flow [2024-06-27 22:52:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:52:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:52:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 22:52:32,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-06-27 22:52:32,146 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 88 flow. Second operand 3 states and 88 transitions. [2024-06-27 22:52:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 210 flow [2024-06-27 22:52:32,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:32,148 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 114 flow [2024-06-27 22:52:32,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 22:52:32,149 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-06-27 22:52:32,149 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 114 flow [2024-06-27 22:52:32,149 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 22:52:32,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:32,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:32,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:52:32,150 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 22:52:32,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1555305142, now seen corresponding path program 1 times [2024-06-27 22:52:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:32,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956865848] [2024-06-27 22:52:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:32,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:33,046 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 22:52:33,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956865848] [2024-06-27 22:52:33,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956865848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:33,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:33,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:52:33,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125594701] [2024-06-27 22:52:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:52:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:52:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:52:33,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-27 22:52:33,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 114 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 22:52:33,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:33,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-27 22:52:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:33,568 INFO L124 PetriNetUnfolderBase]: 2260/3796 cut-off events. [2024-06-27 22:52:33,568 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2024-06-27 22:52:33,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 3796 events. 2260/3796 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23384 event pairs, 1055 based on Foata normal form. 5/3648 useless extension candidates. Maximal degree in co-relation 7948. Up to 3251 conditions per place. [2024-06-27 22:52:33,584 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 51 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2024-06-27 22:52:33,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 306 flow [2024-06-27 22:52:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:52:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:52:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-27 22:52:33,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-27 22:52:33,586 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 114 flow. Second operand 4 states and 115 transitions. [2024-06-27 22:52:33,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 306 flow [2024-06-27 22:52:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:52:33,588 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 177 flow [2024-06-27 22:52:33,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-06-27 22:52:33,589 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-06-27 22:52:33,589 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 177 flow [2024-06-27 22:52:33,589 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 22:52:33,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:33,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:52:33,590 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 22:52:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 969819849, now seen corresponding path program 1 times [2024-06-27 22:52:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372297391] [2024-06-27 22:52:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:34,391 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 22:52:34,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372297391] [2024-06-27 22:52:34,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372297391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:34,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:34,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:52:34,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904550253] [2024-06-27 22:52:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:34,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:52:34,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:34,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:52:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:52:34,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-27 22:52:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 177 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 22:52:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-27 22:52:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:35,008 INFO L124 PetriNetUnfolderBase]: 2808/4672 cut-off events. [2024-06-27 22:52:35,008 INFO L125 PetriNetUnfolderBase]: For 1881/1881 co-relation queries the response was YES. [2024-06-27 22:52:35,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 4672 events. 2808/4672 cut-off events. For 1881/1881 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 28606 event pairs, 1259 based on Foata normal form. 7/4492 useless extension candidates. Maximal degree in co-relation 10980. Up to 3890 conditions per place. [2024-06-27 22:52:35,030 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 74 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-06-27 22:52:35,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 523 flow [2024-06-27 22:52:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:52:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:52:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 22:52:35,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-27 22:52:35,035 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 177 flow. Second operand 5 states and 145 transitions. [2024-06-27 22:52:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 523 flow [2024-06-27 22:52:35,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 506 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:52:35,040 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 297 flow [2024-06-27 22:52:35,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2024-06-27 22:52:35,041 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-06-27 22:52:35,042 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 297 flow [2024-06-27 22:52:35,042 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 22:52:35,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:35,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:52:35,043 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 22:52:35,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash -166588799, now seen corresponding path program 1 times [2024-06-27 22:52:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137314637] [2024-06-27 22:52:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:36,148 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 22:52:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137314637] [2024-06-27 22:52:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137314637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:36,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:52:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900529277] [2024-06-27 22:52:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:52:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:52:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:52:36,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-27 22:52:36,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 297 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 22:52:36,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:36,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-27 22:52:36,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:36,891 INFO L124 PetriNetUnfolderBase]: 2858/4879 cut-off events. [2024-06-27 22:52:36,891 INFO L125 PetriNetUnfolderBase]: For 4607/4610 co-relation queries the response was YES. [2024-06-27 22:52:36,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13377 conditions, 4879 events. 2858/4879 cut-off events. For 4607/4610 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 30780 event pairs, 1209 based on Foata normal form. 7/4701 useless extension candidates. Maximal degree in co-relation 13358. Up to 3795 conditions per place. [2024-06-27 22:52:36,912 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 95 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-27 22:52:36,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 134 transitions, 821 flow [2024-06-27 22:52:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:52:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:52:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:52:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-27 22:52:36,914 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 297 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:52:36,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 134 transitions, 821 flow [2024-06-27 22:52:36,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 134 transitions, 817 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:52:36,919 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 491 flow [2024-06-27 22:52:36,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2024-06-27 22:52:36,920 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-27 22:52:36,920 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 491 flow [2024-06-27 22:52:36,920 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 22:52:36,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:36,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:36,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:52:36,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:36,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash -11004824, now seen corresponding path program 1 times [2024-06-27 22:52:36,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:36,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661678815] [2024-06-27 22:52:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:36,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:38,344 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 22:52:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661678815] [2024-06-27 22:52:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661678815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:38,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:38,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281398767] [2024-06-27 22:52:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:38,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-27 22:52:38,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 491 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 22:52:38,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:38,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-27 22:52:38,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:39,317 INFO L124 PetriNetUnfolderBase]: 3009/4484 cut-off events. [2024-06-27 22:52:39,318 INFO L125 PetriNetUnfolderBase]: For 8978/8987 co-relation queries the response was YES. [2024-06-27 22:52:39,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15717 conditions, 4484 events. 3009/4484 cut-off events. For 8978/8987 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 24236 event pairs, 520 based on Foata normal form. 28/4487 useless extension candidates. Maximal degree in co-relation 15692. Up to 3768 conditions per place. [2024-06-27 22:52:39,347 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 106 selfloop transitions, 31 changer transitions 0/147 dead transitions. [2024-06-27 22:52:39,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 147 transitions, 1027 flow [2024-06-27 22:52:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-06-27 22:52:39,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-27 22:52:39,349 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 491 flow. Second operand 7 states and 203 transitions. [2024-06-27 22:52:39,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 147 transitions, 1027 flow [2024-06-27 22:52:39,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 147 transitions, 1007 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-27 22:52:39,360 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 555 flow [2024-06-27 22:52:39,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=555, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-06-27 22:52:39,363 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-06-27 22:52:39,363 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 555 flow [2024-06-27 22:52:39,363 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 22:52:39,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:39,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:39,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:52:39,364 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 22:52:39,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1078801636, now seen corresponding path program 1 times [2024-06-27 22:52:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230055105] [2024-06-27 22:52:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:40,508 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 22:52:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230055105] [2024-06-27 22:52:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230055105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:40,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:40,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:52:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091339659] [2024-06-27 22:52:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:52:40,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:52:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:52:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:40,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 22:52:40,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:40,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:41,396 INFO L124 PetriNetUnfolderBase]: 3487/5709 cut-off events. [2024-06-27 22:52:41,396 INFO L125 PetriNetUnfolderBase]: For 12995/12995 co-relation queries the response was YES. [2024-06-27 22:52:41,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18753 conditions, 5709 events. 3487/5709 cut-off events. For 12995/12995 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35217 event pairs, 1953 based on Foata normal form. 4/5569 useless extension candidates. Maximal degree in co-relation 18724. Up to 5017 conditions per place. [2024-06-27 22:52:41,430 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 82 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-06-27 22:52:41,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 848 flow [2024-06-27 22:52:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:52:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:52:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-27 22:52:41,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-27 22:52:41,432 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 555 flow. Second operand 5 states and 114 transitions. [2024-06-27 22:52:41,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 848 flow [2024-06-27 22:52:41,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 776 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:41,442 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 593 flow [2024-06-27 22:52:41,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=593, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2024-06-27 22:52:41,443 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2024-06-27 22:52:41,443 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 593 flow [2024-06-27 22:52:41,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 22:52:41,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:41,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:52:41,444 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 22:52:41,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2011978538, now seen corresponding path program 1 times [2024-06-27 22:52:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636047825] [2024-06-27 22:52:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:42,702 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 22:52:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636047825] [2024-06-27 22:52:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636047825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:52:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190677569] [2024-06-27 22:52:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:52:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:52:42,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:52:42,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:42,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:42,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:42,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:42,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:43,694 INFO L124 PetriNetUnfolderBase]: 3615/6048 cut-off events. [2024-06-27 22:52:43,694 INFO L125 PetriNetUnfolderBase]: For 12891/12902 co-relation queries the response was YES. [2024-06-27 22:52:43,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19553 conditions, 6048 events. 3615/6048 cut-off events. For 12891/12902 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 37777 event pairs, 1372 based on Foata normal form. 14/5863 useless extension candidates. Maximal degree in co-relation 19519. Up to 5051 conditions per place. [2024-06-27 22:52:43,727 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 106 selfloop transitions, 31 changer transitions 0/145 dead transitions. [2024-06-27 22:52:43,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 145 transitions, 1185 flow [2024-06-27 22:52:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:52:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:52:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 22:52:43,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-06-27 22:52:43,730 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 593 flow. Second operand 6 states and 154 transitions. [2024-06-27 22:52:43,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 145 transitions, 1185 flow [2024-06-27 22:52:43,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 1163 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:43,741 INFO L231 Difference]: Finished difference. Result has 82 places, 109 transitions, 838 flow [2024-06-27 22:52:43,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=838, PETRI_PLACES=82, PETRI_TRANSITIONS=109} [2024-06-27 22:52:43,742 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-06-27 22:52:43,742 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 109 transitions, 838 flow [2024-06-27 22:52:43,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:43,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:43,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:52:43,742 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 22:52:43,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1648603058, now seen corresponding path program 2 times [2024-06-27 22:52:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567416633] [2024-06-27 22:52:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:44,842 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 22:52:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:44,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567416633] [2024-06-27 22:52:44,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567416633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:44,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:44,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:52:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237963159] [2024-06-27 22:52:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:52:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:52:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:52:44,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:44,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 109 transitions, 838 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:44,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:44,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:44,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:45,827 INFO L124 PetriNetUnfolderBase]: 3839/6454 cut-off events. [2024-06-27 22:52:45,827 INFO L125 PetriNetUnfolderBase]: For 18032/18035 co-relation queries the response was YES. [2024-06-27 22:52:45,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22941 conditions, 6454 events. 3839/6454 cut-off events. For 18032/18035 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 40961 event pairs, 1838 based on Foata normal form. 12/6259 useless extension candidates. Maximal degree in co-relation 22904. Up to 5215 conditions per place. [2024-06-27 22:52:45,859 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 127 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-06-27 22:52:45,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 172 transitions, 1631 flow [2024-06-27 22:52:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:52:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:52:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 22:52:45,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-06-27 22:52:45,861 INFO L175 Difference]: Start difference. First operand has 82 places, 109 transitions, 838 flow. Second operand 6 states and 143 transitions. [2024-06-27 22:52:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 172 transitions, 1631 flow [2024-06-27 22:52:45,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 172 transitions, 1574 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 22:52:45,877 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 1188 flow [2024-06-27 22:52:45,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1188, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2024-06-27 22:52:45,877 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2024-06-27 22:52:45,877 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 1188 flow [2024-06-27 22:52:45,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:45,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:45,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:45,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:52:45,878 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 22:52:45,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1641216998, now seen corresponding path program 3 times [2024-06-27 22:52:45,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:45,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939570572] [2024-06-27 22:52:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:45,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:46,827 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 22:52:46,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:46,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939570572] [2024-06-27 22:52:46,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939570572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:46,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:46,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:52:46,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553641250] [2024-06-27 22:52:46,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:46,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:52:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:52:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:52:46,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:46,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 1188 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:46,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:46,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:46,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:47,707 INFO L124 PetriNetUnfolderBase]: 3811/6416 cut-off events. [2024-06-27 22:52:47,707 INFO L125 PetriNetUnfolderBase]: For 20861/20861 co-relation queries the response was YES. [2024-06-27 22:52:47,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23486 conditions, 6416 events. 3811/6416 cut-off events. For 20861/20861 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 40765 event pairs, 1850 based on Foata normal form. 5/6213 useless extension candidates. Maximal degree in co-relation 23445. Up to 5442 conditions per place. [2024-06-27 22:52:47,754 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 139 selfloop transitions, 17 changer transitions 0/164 dead transitions. [2024-06-27 22:52:47,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 164 transitions, 1665 flow [2024-06-27 22:52:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:52:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:52:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 22:52:47,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-27 22:52:47,756 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 1188 flow. Second operand 6 states and 134 transitions. [2024-06-27 22:52:47,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 164 transitions, 1665 flow [2024-06-27 22:52:47,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 164 transitions, 1651 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:47,783 INFO L231 Difference]: Finished difference. Result has 92 places, 135 transitions, 1283 flow [2024-06-27 22:52:47,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1283, PETRI_PLACES=92, PETRI_TRANSITIONS=135} [2024-06-27 22:52:47,783 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-06-27 22:52:47,783 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 135 transitions, 1283 flow [2024-06-27 22:52:47,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:47,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:47,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:52:47,784 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 22:52:47,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1995080185, now seen corresponding path program 1 times [2024-06-27 22:52:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061024849] [2024-06-27 22:52:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:49,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061024849] [2024-06-27 22:52:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061024849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:49,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:52:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956473335] [2024-06-27 22:52:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:49,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:52:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:52:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:52:49,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:49,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 135 transitions, 1283 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:49,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:49,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:49,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:50,513 INFO L124 PetriNetUnfolderBase]: 3803/6385 cut-off events. [2024-06-27 22:52:50,515 INFO L125 PetriNetUnfolderBase]: For 22448/22448 co-relation queries the response was YES. [2024-06-27 22:52:50,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23720 conditions, 6385 events. 3803/6385 cut-off events. For 22448/22448 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 40375 event pairs, 1781 based on Foata normal form. 4/6181 useless extension candidates. Maximal degree in co-relation 23677. Up to 5415 conditions per place. [2024-06-27 22:52:50,550 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 139 selfloop transitions, 17 changer transitions 0/164 dead transitions. [2024-06-27 22:52:50,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 164 transitions, 1699 flow [2024-06-27 22:52:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 22:52:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:52:50,552 INFO L175 Difference]: Start difference. First operand has 92 places, 135 transitions, 1283 flow. Second operand 7 states and 147 transitions. [2024-06-27 22:52:50,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 164 transitions, 1699 flow [2024-06-27 22:52:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1667 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:50,580 INFO L231 Difference]: Finished difference. Result has 96 places, 137 transitions, 1310 flow [2024-06-27 22:52:50,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1310, PETRI_PLACES=96, PETRI_TRANSITIONS=137} [2024-06-27 22:52:50,581 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-06-27 22:52:50,581 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 137 transitions, 1310 flow [2024-06-27 22:52:50,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:50,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:50,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:52:50,582 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 22:52:50,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2053173333, now seen corresponding path program 1 times [2024-06-27 22:52:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612361789] [2024-06-27 22:52:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:52,363 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 22:52:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612361789] [2024-06-27 22:52:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612361789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:52,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:52,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390494752] [2024-06-27 22:52:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:52,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:52,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:52,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:52,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 137 transitions, 1310 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 22:52:52,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:52,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:52,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:53,520 INFO L124 PetriNetUnfolderBase]: 3990/6648 cut-off events. [2024-06-27 22:52:53,521 INFO L125 PetriNetUnfolderBase]: For 25893/25910 co-relation queries the response was YES. [2024-06-27 22:52:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25740 conditions, 6648 events. 3990/6648 cut-off events. For 25893/25910 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 41840 event pairs, 1375 based on Foata normal form. 22/6452 useless extension candidates. Maximal degree in co-relation 25696. Up to 5141 conditions per place. [2024-06-27 22:52:53,589 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 120 selfloop transitions, 79 changer transitions 0/207 dead transitions. [2024-06-27 22:52:53,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 207 transitions, 2151 flow [2024-06-27 22:52:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:52:53,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2024-06-27 22:52:53,593 INFO L175 Difference]: Start difference. First operand has 96 places, 137 transitions, 1310 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:52:53,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 207 transitions, 2151 flow [2024-06-27 22:52:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 207 transitions, 2106 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:53,638 INFO L231 Difference]: Finished difference. Result has 102 places, 160 transitions, 1793 flow [2024-06-27 22:52:53,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1793, PETRI_PLACES=102, PETRI_TRANSITIONS=160} [2024-06-27 22:52:53,640 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2024-06-27 22:52:53,640 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 160 transitions, 1793 flow [2024-06-27 22:52:53,640 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 22:52:53,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:53,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:52:53,641 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 22:52:53,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash 662148023, now seen corresponding path program 2 times [2024-06-27 22:52:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381206249] [2024-06-27 22:52:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:55,058 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 22:52:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381206249] [2024-06-27 22:52:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381206249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:55,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:55,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883029161] [2024-06-27 22:52:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:55,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:55,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:52:55,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 160 transitions, 1793 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 22:52:55,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:55,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:52:55,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:56,058 INFO L124 PetriNetUnfolderBase]: 3995/6712 cut-off events. [2024-06-27 22:52:56,058 INFO L125 PetriNetUnfolderBase]: For 34949/34949 co-relation queries the response was YES. [2024-06-27 22:52:56,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28320 conditions, 6712 events. 3995/6712 cut-off events. For 34949/34949 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42802 event pairs, 1846 based on Foata normal form. 2/6490 useless extension candidates. Maximal degree in co-relation 28273. Up to 5640 conditions per place. [2024-06-27 22:52:56,110 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 168 selfloop transitions, 28 changer transitions 0/204 dead transitions. [2024-06-27 22:52:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 2397 flow [2024-06-27 22:52:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 22:52:56,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 22:52:56,112 INFO L175 Difference]: Start difference. First operand has 102 places, 160 transitions, 1793 flow. Second operand 8 states and 172 transitions. [2024-06-27 22:52:56,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 2397 flow [2024-06-27 22:52:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 2313 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:56,160 INFO L231 Difference]: Finished difference. Result has 108 places, 163 transitions, 1811 flow [2024-06-27 22:52:56,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1811, PETRI_PLACES=108, PETRI_TRANSITIONS=163} [2024-06-27 22:52:56,161 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 57 predicate places. [2024-06-27 22:52:56,161 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 163 transitions, 1811 flow [2024-06-27 22:52:56,161 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 22:52:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:56,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:52:56,162 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 22:52:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1803532673, now seen corresponding path program 1 times [2024-06-27 22:52:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:56,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196950870] [2024-06-27 22:52:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:57,623 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 22:52:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196950870] [2024-06-27 22:52:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196950870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:57,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:57,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:57,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40178322] [2024-06-27 22:52:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:57,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:57,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:57,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:52:57,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 163 transitions, 1811 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 22:52:57,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:57,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:52:57,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:58,538 INFO L124 PetriNetUnfolderBase]: 3923/6525 cut-off events. [2024-06-27 22:52:58,538 INFO L125 PetriNetUnfolderBase]: For 33677/33715 co-relation queries the response was YES. [2024-06-27 22:52:58,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27015 conditions, 6525 events. 3923/6525 cut-off events. For 33677/33715 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41236 event pairs, 1265 based on Foata normal form. 24/6332 useless extension candidates. Maximal degree in co-relation 26966. Up to 4764 conditions per place. [2024-06-27 22:52:58,588 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 122 selfloop transitions, 80 changer transitions 0/213 dead transitions. [2024-06-27 22:52:58,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 213 transitions, 2537 flow [2024-06-27 22:52:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:52:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:52:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:52:58,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-06-27 22:52:58,592 INFO L175 Difference]: Start difference. First operand has 108 places, 163 transitions, 1811 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:52:58,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 213 transitions, 2537 flow [2024-06-27 22:52:58,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 213 transitions, 2484 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:58,629 INFO L231 Difference]: Finished difference. Result has 109 places, 169 transitions, 1976 flow [2024-06-27 22:52:58,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1976, PETRI_PLACES=109, PETRI_TRANSITIONS=169} [2024-06-27 22:52:58,630 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 58 predicate places. [2024-06-27 22:52:58,630 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 169 transitions, 1976 flow [2024-06-27 22:52:58,631 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 22:52:58,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:58,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:58,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:52:58,631 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 22:52:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1788830109, now seen corresponding path program 1 times [2024-06-27 22:52:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:58,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503732291] [2024-06-27 22:52:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:58,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:00,826 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 22:53:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503732291] [2024-06-27 22:53:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503732291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:00,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431625148] [2024-06-27 22:53:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:00,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:00,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 169 transitions, 1976 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 22:53:00,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:00,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:00,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:02,256 INFO L124 PetriNetUnfolderBase]: 4282/7086 cut-off events. [2024-06-27 22:53:02,257 INFO L125 PetriNetUnfolderBase]: For 44131/44148 co-relation queries the response was YES. [2024-06-27 22:53:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31090 conditions, 7086 events. 4282/7086 cut-off events. For 44131/44148 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 44715 event pairs, 1327 based on Foata normal form. 42/6908 useless extension candidates. Maximal degree in co-relation 31041. Up to 5287 conditions per place. [2024-06-27 22:53:02,314 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 141 selfloop transitions, 83 changer transitions 0/232 dead transitions. [2024-06-27 22:53:02,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 232 transitions, 2726 flow [2024-06-27 22:53:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:53:02,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382716049382716 [2024-06-27 22:53:02,317 INFO L175 Difference]: Start difference. First operand has 109 places, 169 transitions, 1976 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:53:02,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 232 transitions, 2726 flow [2024-06-27 22:53:02,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 232 transitions, 2644 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 22:53:02,377 INFO L231 Difference]: Finished difference. Result has 116 places, 173 transitions, 2114 flow [2024-06-27 22:53:02,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2114, PETRI_PLACES=116, PETRI_TRANSITIONS=173} [2024-06-27 22:53:02,378 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 65 predicate places. [2024-06-27 22:53:02,378 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 173 transitions, 2114 flow [2024-06-27 22:53:02,378 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 22:53:02,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:02,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:53:02,379 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 22:53:02,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash 473440811, now seen corresponding path program 2 times [2024-06-27 22:53:02,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:02,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934405322] [2024-06-27 22:53:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934405322] [2024-06-27 22:53:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934405322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:03,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031049105] [2024-06-27 22:53:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:03,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:03,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:03,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 173 transitions, 2114 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 22:53:03,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:03,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:03,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:04,867 INFO L124 PetriNetUnfolderBase]: 4343/7182 cut-off events. [2024-06-27 22:53:04,867 INFO L125 PetriNetUnfolderBase]: For 48055/48061 co-relation queries the response was YES. [2024-06-27 22:53:04,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33129 conditions, 7182 events. 4343/7182 cut-off events. For 48055/48061 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45398 event pairs, 1856 based on Foata normal form. 8/6979 useless extension candidates. Maximal degree in co-relation 33077. Up to 5964 conditions per place. [2024-06-27 22:53:04,912 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 175 selfloop transitions, 63 changer transitions 0/246 dead transitions. [2024-06-27 22:53:04,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 246 transitions, 3127 flow [2024-06-27 22:53:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:53:04,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-06-27 22:53:04,914 INFO L175 Difference]: Start difference. First operand has 116 places, 173 transitions, 2114 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:53:04,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 246 transitions, 3127 flow [2024-06-27 22:53:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 246 transitions, 2947 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:04,970 INFO L231 Difference]: Finished difference. Result has 118 places, 203 transitions, 2446 flow [2024-06-27 22:53:04,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2446, PETRI_PLACES=118, PETRI_TRANSITIONS=203} [2024-06-27 22:53:04,971 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 67 predicate places. [2024-06-27 22:53:04,971 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 203 transitions, 2446 flow [2024-06-27 22:53:04,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 22:53:04,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:04,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:53:04,972 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 22:53:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash -374550473, now seen corresponding path program 2 times [2024-06-27 22:53:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663649728] [2024-06-27 22:53:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:06,615 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 22:53:06,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:06,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663649728] [2024-06-27 22:53:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663649728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:06,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696964697] [2024-06-27 22:53:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:06,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 203 transitions, 2446 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 22:53:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:06,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:07,853 INFO L124 PetriNetUnfolderBase]: 4479/7453 cut-off events. [2024-06-27 22:53:07,853 INFO L125 PetriNetUnfolderBase]: For 54117/54120 co-relation queries the response was YES. [2024-06-27 22:53:07,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35286 conditions, 7453 events. 4479/7453 cut-off events. For 54117/54120 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 47764 event pairs, 1896 based on Foata normal form. 10/7237 useless extension candidates. Maximal degree in co-relation 35231. Up to 5931 conditions per place. [2024-06-27 22:53:07,915 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 177 selfloop transitions, 64 changer transitions 0/249 dead transitions. [2024-06-27 22:53:07,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 249 transitions, 3192 flow [2024-06-27 22:53:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 22:53:07,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:53:07,917 INFO L175 Difference]: Start difference. First operand has 118 places, 203 transitions, 2446 flow. Second operand 8 states and 175 transitions. [2024-06-27 22:53:07,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 249 transitions, 3192 flow [2024-06-27 22:53:07,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 249 transitions, 3153 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:53:07,998 INFO L231 Difference]: Finished difference. Result has 124 places, 209 transitions, 2610 flow [2024-06-27 22:53:07,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2610, PETRI_PLACES=124, PETRI_TRANSITIONS=209} [2024-06-27 22:53:07,998 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2024-06-27 22:53:07,998 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 209 transitions, 2610 flow [2024-06-27 22:53:07,999 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 22:53:07,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:07,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:53:07,999 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 22:53:07,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -956491687, now seen corresponding path program 3 times [2024-06-27 22:53:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89990459] [2024-06-27 22:53:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:09,420 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 22:53:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89990459] [2024-06-27 22:53:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89990459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:09,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:09,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061917987] [2024-06-27 22:53:09,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:09,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:09,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:09,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:09,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 209 transitions, 2610 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 22:53:09,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:09,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:09,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:10,571 INFO L124 PetriNetUnfolderBase]: 4516/7531 cut-off events. [2024-06-27 22:53:10,572 INFO L125 PetriNetUnfolderBase]: For 60626/60626 co-relation queries the response was YES. [2024-06-27 22:53:10,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36968 conditions, 7531 events. 4516/7531 cut-off events. For 60626/60626 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48517 event pairs, 1948 based on Foata normal form. 4/7301 useless extension candidates. Maximal degree in co-relation 36911. Up to 6414 conditions per place. [2024-06-27 22:53:10,634 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 221 selfloop transitions, 21 changer transitions 0/250 dead transitions. [2024-06-27 22:53:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 250 transitions, 3322 flow [2024-06-27 22:53:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 22:53:10,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-27 22:53:10,636 INFO L175 Difference]: Start difference. First operand has 124 places, 209 transitions, 2610 flow. Second operand 8 states and 167 transitions. [2024-06-27 22:53:10,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 250 transitions, 3322 flow [2024-06-27 22:53:10,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 250 transitions, 3214 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:10,728 INFO L231 Difference]: Finished difference. Result has 127 places, 211 transitions, 2584 flow [2024-06-27 22:53:10,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2584, PETRI_PLACES=127, PETRI_TRANSITIONS=211} [2024-06-27 22:53:10,729 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-27 22:53:10,729 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 211 transitions, 2584 flow [2024-06-27 22:53:10,729 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 22:53:10,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:10,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:10,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:53:10,730 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 22:53:10,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash -86398764, now seen corresponding path program 1 times [2024-06-27 22:53:10,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:10,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329361597] [2024-06-27 22:53:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:11,926 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 22:53:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329361597] [2024-06-27 22:53:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329361597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:11,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383013863] [2024-06-27 22:53:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:11,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:11,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:11,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 211 transitions, 2584 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 22:53:11,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:11,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:11,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:13,105 INFO L124 PetriNetUnfolderBase]: 4496/7413 cut-off events. [2024-06-27 22:53:13,105 INFO L125 PetriNetUnfolderBase]: For 63247/63255 co-relation queries the response was YES. [2024-06-27 22:53:13,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36659 conditions, 7413 events. 4496/7413 cut-off events. For 63247/63255 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46917 event pairs, 1867 based on Foata normal form. 8/7209 useless extension candidates. Maximal degree in co-relation 36602. Up to 5987 conditions per place. [2024-06-27 22:53:13,154 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 167 selfloop transitions, 78 changer transitions 0/253 dead transitions. [2024-06-27 22:53:13,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 253 transitions, 3330 flow [2024-06-27 22:53:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:53:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:53:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:53:13,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:53:13,156 INFO L175 Difference]: Start difference. First operand has 127 places, 211 transitions, 2584 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:53:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 253 transitions, 3330 flow [2024-06-27 22:53:13,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 253 transitions, 3242 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:13,251 INFO L231 Difference]: Finished difference. Result has 127 places, 212 transitions, 2757 flow [2024-06-27 22:53:13,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2757, PETRI_PLACES=127, PETRI_TRANSITIONS=212} [2024-06-27 22:53:13,252 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-27 22:53:13,252 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 212 transitions, 2757 flow [2024-06-27 22:53:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 22:53:13,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:13,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:53:13,253 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 22:53:13,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash -948246307, now seen corresponding path program 4 times [2024-06-27 22:53:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135804810] [2024-06-27 22:53:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135804810] [2024-06-27 22:53:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135804810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:14,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259374943] [2024-06-27 22:53:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:14,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:14,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:14,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:14,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 212 transitions, 2757 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 22:53:14,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:14,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:14,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:16,008 INFO L124 PetriNetUnfolderBase]: 4533/7534 cut-off events. [2024-06-27 22:53:16,009 INFO L125 PetriNetUnfolderBase]: For 70194/70194 co-relation queries the response was YES. [2024-06-27 22:53:16,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38077 conditions, 7534 events. 4533/7534 cut-off events. For 70194/70194 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 48332 event pairs, 1914 based on Foata normal form. 4/7302 useless extension candidates. Maximal degree in co-relation 38019. Up to 6347 conditions per place. [2024-06-27 22:53:16,072 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 224 selfloop transitions, 34 changer transitions 0/266 dead transitions. [2024-06-27 22:53:16,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 266 transitions, 3575 flow [2024-06-27 22:53:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:53:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:53:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-27 22:53:16,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 22:53:16,074 INFO L175 Difference]: Start difference. First operand has 127 places, 212 transitions, 2757 flow. Second operand 10 states and 205 transitions. [2024-06-27 22:53:16,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 266 transitions, 3575 flow [2024-06-27 22:53:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 266 transitions, 3395 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:16,187 INFO L231 Difference]: Finished difference. Result has 132 places, 214 transitions, 2693 flow [2024-06-27 22:53:16,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2693, PETRI_PLACES=132, PETRI_TRANSITIONS=214} [2024-06-27 22:53:16,188 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-27 22:53:16,188 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 214 transitions, 2693 flow [2024-06-27 22:53:16,188 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 22:53:16,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:53:16,189 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 22:53:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -86102807, now seen corresponding path program 5 times [2024-06-27 22:53:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75040865] [2024-06-27 22:53:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:17,464 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 22:53:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75040865] [2024-06-27 22:53:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75040865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:17,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:17,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:17,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452357290] [2024-06-27 22:53:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:17,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:17,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:17,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:17,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 214 transitions, 2693 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 22:53:17,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:17,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:18,661 INFO L124 PetriNetUnfolderBase]: 4533/7569 cut-off events. [2024-06-27 22:53:18,661 INFO L125 PetriNetUnfolderBase]: For 71857/71857 co-relation queries the response was YES. [2024-06-27 22:53:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38192 conditions, 7569 events. 4533/7569 cut-off events. For 71857/71857 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48871 event pairs, 1899 based on Foata normal form. 4/7333 useless extension candidates. Maximal degree in co-relation 38133. Up to 6443 conditions per place. [2024-06-27 22:53:18,728 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 230 selfloop transitions, 21 changer transitions 0/259 dead transitions. [2024-06-27 22:53:18,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 259 transitions, 3443 flow [2024-06-27 22:53:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-27 22:53:18,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 22:53:18,730 INFO L175 Difference]: Start difference. First operand has 132 places, 214 transitions, 2693 flow. Second operand 9 states and 186 transitions. [2024-06-27 22:53:18,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 259 transitions, 3443 flow [2024-06-27 22:53:18,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 259 transitions, 3347 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:53:18,856 INFO L231 Difference]: Finished difference. Result has 135 places, 223 transitions, 2785 flow [2024-06-27 22:53:18,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2785, PETRI_PLACES=135, PETRI_TRANSITIONS=223} [2024-06-27 22:53:18,857 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-27 22:53:18,857 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 223 transitions, 2785 flow [2024-06-27 22:53:18,857 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 22:53:18,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:18,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:53:18,858 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 22:53:18,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1384926250, now seen corresponding path program 1 times [2024-06-27 22:53:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676659858] [2024-06-27 22:53:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:20,544 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 22:53:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676659858] [2024-06-27 22:53:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676659858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:20,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170801889] [2024-06-27 22:53:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:20,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:53:20,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 223 transitions, 2785 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 22:53:20,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:20,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:53:20,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:21,871 INFO L124 PetriNetUnfolderBase]: 4610/7685 cut-off events. [2024-06-27 22:53:21,872 INFO L125 PetriNetUnfolderBase]: For 79544/79584 co-relation queries the response was YES. [2024-06-27 22:53:21,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38985 conditions, 7685 events. 4610/7685 cut-off events. For 79544/79584 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50333 event pairs, 928 based on Foata normal form. 36/7466 useless extension candidates. Maximal degree in co-relation 38923. Up to 4790 conditions per place. [2024-06-27 22:53:21,935 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 171 selfloop transitions, 102 changer transitions 0/284 dead transitions. [2024-06-27 22:53:21,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 284 transitions, 3821 flow [2024-06-27 22:53:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:53:21,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889 [2024-06-27 22:53:21,937 INFO L175 Difference]: Start difference. First operand has 135 places, 223 transitions, 2785 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:53:21,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 284 transitions, 3821 flow [2024-06-27 22:53:22,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 284 transitions, 3741 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:22,060 INFO L231 Difference]: Finished difference. Result has 139 places, 226 transitions, 2987 flow [2024-06-27 22:53:22,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2987, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2024-06-27 22:53:22,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 88 predicate places. [2024-06-27 22:53:22,061 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 2987 flow [2024-06-27 22:53:22,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 22:53:22,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:22,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:22,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:53:22,061 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 22:53:22,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -629049310, now seen corresponding path program 2 times [2024-06-27 22:53:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:22,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228435457] [2024-06-27 22:53:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:22,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:23,798 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 22:53:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228435457] [2024-06-27 22:53:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228435457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:23,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238685797] [2024-06-27 22:53:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:23,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:53:23,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 2987 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 22:53:23,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:23,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:53:23,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:25,123 INFO L124 PetriNetUnfolderBase]: 4754/7973 cut-off events. [2024-06-27 22:53:25,124 INFO L125 PetriNetUnfolderBase]: For 91081/91121 co-relation queries the response was YES. [2024-06-27 22:53:25,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41646 conditions, 7973 events. 4754/7973 cut-off events. For 91081/91121 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52947 event pairs, 1421 based on Foata normal form. 40/7743 useless extension candidates. Maximal degree in co-relation 41582. Up to 5786 conditions per place. [2024-06-27 22:53:25,199 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 169 selfloop transitions, 99 changer transitions 0/279 dead transitions. [2024-06-27 22:53:25,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 279 transitions, 3886 flow [2024-06-27 22:53:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:53:25,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-27 22:53:25,200 INFO L175 Difference]: Start difference. First operand has 139 places, 226 transitions, 2987 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:53:25,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 279 transitions, 3886 flow [2024-06-27 22:53:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 279 transitions, 3751 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:25,379 INFO L231 Difference]: Finished difference. Result has 143 places, 227 transitions, 3082 flow [2024-06-27 22:53:25,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3082, PETRI_PLACES=143, PETRI_TRANSITIONS=227} [2024-06-27 22:53:25,380 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-06-27 22:53:25,380 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 227 transitions, 3082 flow [2024-06-27 22:53:25,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 22:53:25,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:25,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:25,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:53:25,381 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 22:53:25,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1709717136, now seen corresponding path program 1 times [2024-06-27 22:53:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:25,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135563731] [2024-06-27 22:53:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:25,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:26,818 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 22:53:26,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:26,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135563731] [2024-06-27 22:53:26,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135563731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:26,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:26,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739541155] [2024-06-27 22:53:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:26,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:26,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:26,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:26,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 227 transitions, 3082 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 22:53:26,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:26,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:26,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:28,158 INFO L124 PetriNetUnfolderBase]: 5033/8374 cut-off events. [2024-06-27 22:53:28,158 INFO L125 PetriNetUnfolderBase]: For 95750/95763 co-relation queries the response was YES. [2024-06-27 22:53:28,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45353 conditions, 8374 events. 5033/8374 cut-off events. For 95750/95763 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 54829 event pairs, 1537 based on Foata normal form. 14/8127 useless extension candidates. Maximal degree in co-relation 45287. Up to 6818 conditions per place. [2024-06-27 22:53:28,360 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 216 selfloop transitions, 92 changer transitions 0/316 dead transitions. [2024-06-27 22:53:28,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 316 transitions, 4833 flow [2024-06-27 22:53:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:53:28,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587301587301587 [2024-06-27 22:53:28,362 INFO L175 Difference]: Start difference. First operand has 143 places, 227 transitions, 3082 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:53:28,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 316 transitions, 4833 flow [2024-06-27 22:53:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 316 transitions, 4564 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:53:28,515 INFO L231 Difference]: Finished difference. Result has 147 places, 276 transitions, 4123 flow [2024-06-27 22:53:28,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4123, PETRI_PLACES=147, PETRI_TRANSITIONS=276} [2024-06-27 22:53:28,516 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 96 predicate places. [2024-06-27 22:53:28,516 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 276 transitions, 4123 flow [2024-06-27 22:53:28,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 22:53:28,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:28,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:28,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:53:28,517 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 22:53:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1709537646, now seen corresponding path program 2 times [2024-06-27 22:53:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97227449] [2024-06-27 22:53:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:29,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:29,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97227449] [2024-06-27 22:53:29,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97227449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:29,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:29,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037875042] [2024-06-27 22:53:29,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:29,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:29,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:29,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:29,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 276 transitions, 4123 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 22:53:29,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:29,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:29,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:31,226 INFO L124 PetriNetUnfolderBase]: 5159/8554 cut-off events. [2024-06-27 22:53:31,226 INFO L125 PetriNetUnfolderBase]: For 103025/103043 co-relation queries the response was YES. [2024-06-27 22:53:31,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47067 conditions, 8554 events. 5159/8554 cut-off events. For 103025/103043 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 55925 event pairs, 1539 based on Foata normal form. 18/8310 useless extension candidates. Maximal degree in co-relation 46998. Up to 6774 conditions per place. [2024-06-27 22:53:31,306 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 226 selfloop transitions, 100 changer transitions 0/334 dead transitions. [2024-06-27 22:53:31,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 334 transitions, 5214 flow [2024-06-27 22:53:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 22:53:31,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 22:53:31,308 INFO L175 Difference]: Start difference. First operand has 147 places, 276 transitions, 4123 flow. Second operand 8 states and 186 transitions. [2024-06-27 22:53:31,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 334 transitions, 5214 flow [2024-06-27 22:53:31,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 334 transitions, 5123 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-27 22:53:31,552 INFO L231 Difference]: Finished difference. Result has 155 places, 294 transitions, 4502 flow [2024-06-27 22:53:31,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4502, PETRI_PLACES=155, PETRI_TRANSITIONS=294} [2024-06-27 22:53:31,553 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2024-06-27 22:53:31,553 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 294 transitions, 4502 flow [2024-06-27 22:53:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 22:53:31,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:31,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:53:31,554 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 22:53:31,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash 544470968, now seen corresponding path program 1 times [2024-06-27 22:53:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881110229] [2024-06-27 22:53:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:33,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881110229] [2024-06-27 22:53:33,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881110229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:33,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794023203] [2024-06-27 22:53:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:33,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:33,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:33,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 294 transitions, 4502 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:33,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:33,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:33,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:34,891 INFO L124 PetriNetUnfolderBase]: 5188/8699 cut-off events. [2024-06-27 22:53:34,891 INFO L125 PetriNetUnfolderBase]: For 113568/113580 co-relation queries the response was YES. [2024-06-27 22:53:34,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48827 conditions, 8699 events. 5188/8699 cut-off events. For 113568/113580 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57831 event pairs, 2120 based on Foata normal form. 10/8441 useless extension candidates. Maximal degree in co-relation 48754. Up to 6894 conditions per place. [2024-06-27 22:53:34,959 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 214 selfloop transitions, 123 changer transitions 0/345 dead transitions. [2024-06-27 22:53:34,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 345 transitions, 5538 flow [2024-06-27 22:53:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 22:53:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 22:53:34,960 INFO L175 Difference]: Start difference. First operand has 155 places, 294 transitions, 4502 flow. Second operand 8 states and 177 transitions. [2024-06-27 22:53:34,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 345 transitions, 5538 flow [2024-06-27 22:53:35,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 345 transitions, 5350 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:35,242 INFO L231 Difference]: Finished difference. Result has 160 places, 301 transitions, 4750 flow [2024-06-27 22:53:35,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4330, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4750, PETRI_PLACES=160, PETRI_TRANSITIONS=301} [2024-06-27 22:53:35,243 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 109 predicate places. [2024-06-27 22:53:35,244 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 301 transitions, 4750 flow [2024-06-27 22:53:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:35,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:35,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:35,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:53:35,244 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 22:53:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 544466194, now seen corresponding path program 3 times [2024-06-27 22:53:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474917773] [2024-06-27 22:53:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:37,317 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 22:53:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:37,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474917773] [2024-06-27 22:53:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474917773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:37,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832637159] [2024-06-27 22:53:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:37,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:37,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 301 transitions, 4750 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:37,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:37,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:37,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:38,978 INFO L124 PetriNetUnfolderBase]: 5433/9046 cut-off events. [2024-06-27 22:53:38,979 INFO L125 PetriNetUnfolderBase]: For 125959/125965 co-relation queries the response was YES. [2024-06-27 22:53:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51710 conditions, 9046 events. 5433/9046 cut-off events. For 125959/125965 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 60096 event pairs, 2176 based on Foata normal form. 24/8806 useless extension candidates. Maximal degree in co-relation 51634. Up to 7304 conditions per place. [2024-06-27 22:53:39,078 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 292 selfloop transitions, 54 changer transitions 0/354 dead transitions. [2024-06-27 22:53:39,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 354 transitions, 5821 flow [2024-06-27 22:53:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:53:39,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 22:53:39,079 INFO L175 Difference]: Start difference. First operand has 160 places, 301 transitions, 4750 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:53:39,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 354 transitions, 5821 flow [2024-06-27 22:53:39,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 354 transitions, 5614 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:39,429 INFO L231 Difference]: Finished difference. Result has 164 places, 306 transitions, 4761 flow [2024-06-27 22:53:39,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4761, PETRI_PLACES=164, PETRI_TRANSITIONS=306} [2024-06-27 22:53:39,430 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-27 22:53:39,430 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 306 transitions, 4761 flow [2024-06-27 22:53:39,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:39,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:39,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:39,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:53:39,431 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 22:53:39,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1907060688, now seen corresponding path program 3 times [2024-06-27 22:53:39,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:39,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116094900] [2024-06-27 22:53:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:41,051 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 22:53:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116094900] [2024-06-27 22:53:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116094900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:41,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:41,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260724261] [2024-06-27 22:53:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:41,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:41,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:41,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:41,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:41,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 306 transitions, 4761 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:41,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:41,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:41,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:42,735 INFO L124 PetriNetUnfolderBase]: 5488/9202 cut-off events. [2024-06-27 22:53:42,735 INFO L125 PetriNetUnfolderBase]: For 123623/123629 co-relation queries the response was YES. [2024-06-27 22:53:42,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52258 conditions, 9202 events. 5488/9202 cut-off events. For 123623/123629 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 61975 event pairs, 2231 based on Foata normal form. 10/8931 useless extension candidates. Maximal degree in co-relation 52180. Up to 7473 conditions per place. [2024-06-27 22:53:42,822 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 257 selfloop transitions, 92 changer transitions 0/357 dead transitions. [2024-06-27 22:53:42,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 5812 flow [2024-06-27 22:53:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 22:53:42,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:53:42,823 INFO L175 Difference]: Start difference. First operand has 164 places, 306 transitions, 4761 flow. Second operand 8 states and 175 transitions. [2024-06-27 22:53:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 5812 flow [2024-06-27 22:53:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 357 transitions, 5724 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 22:53:43,182 INFO L231 Difference]: Finished difference. Result has 169 places, 310 transitions, 4940 flow [2024-06-27 22:53:43,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4679, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4940, PETRI_PLACES=169, PETRI_TRANSITIONS=310} [2024-06-27 22:53:43,187 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 118 predicate places. [2024-06-27 22:53:43,187 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 310 transitions, 4940 flow [2024-06-27 22:53:43,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:43,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:43,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:43,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:53:43,187 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 22:53:43,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1907240178, now seen corresponding path program 4 times [2024-06-27 22:53:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:43,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035002667] [2024-06-27 22:53:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:44,635 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 22:53:44,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035002667] [2024-06-27 22:53:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035002667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915656673] [2024-06-27 22:53:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:44,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:44,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:44,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 310 transitions, 4940 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:44,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:44,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:44,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:46,194 INFO L124 PetriNetUnfolderBase]: 5548/9275 cut-off events. [2024-06-27 22:53:46,194 INFO L125 PetriNetUnfolderBase]: For 130907/130913 co-relation queries the response was YES. [2024-06-27 22:53:46,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53030 conditions, 9275 events. 5548/9275 cut-off events. For 130907/130913 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 62298 event pairs, 2230 based on Foata normal form. 8/9005 useless extension candidates. Maximal degree in co-relation 52951. Up to 7231 conditions per place. [2024-06-27 22:53:46,287 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 249 selfloop transitions, 96 changer transitions 0/353 dead transitions. [2024-06-27 22:53:46,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 353 transitions, 5878 flow [2024-06-27 22:53:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:53:46,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 22:53:46,288 INFO L175 Difference]: Start difference. First operand has 169 places, 310 transitions, 4940 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:53:46,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 353 transitions, 5878 flow [2024-06-27 22:53:46,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 353 transitions, 5719 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:46,746 INFO L231 Difference]: Finished difference. Result has 172 places, 314 transitions, 5047 flow [2024-06-27 22:53:46,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5047, PETRI_PLACES=172, PETRI_TRANSITIONS=314} [2024-06-27 22:53:46,749 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2024-06-27 22:53:46,749 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 314 transitions, 5047 flow [2024-06-27 22:53:46,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:46,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:46,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:46,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:53:46,750 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 22:53:46,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash 669130288, now seen corresponding path program 5 times [2024-06-27 22:53:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761526362] [2024-06-27 22:53:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:48,302 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 22:53:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:48,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761526362] [2024-06-27 22:53:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761526362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:48,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:48,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598938633] [2024-06-27 22:53:48,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:48,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:48,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:48,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 314 transitions, 5047 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:48,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:48,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:49,991 INFO L124 PetriNetUnfolderBase]: 5595/9346 cut-off events. [2024-06-27 22:53:49,992 INFO L125 PetriNetUnfolderBase]: For 140097/140103 co-relation queries the response was YES. [2024-06-27 22:53:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54146 conditions, 9346 events. 5595/9346 cut-off events. For 140097/140103 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 62752 event pairs, 2263 based on Foata normal form. 8/9079 useless extension candidates. Maximal degree in co-relation 54066. Up to 7784 conditions per place. [2024-06-27 22:53:50,093 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 287 selfloop transitions, 94 changer transitions 0/389 dead transitions. [2024-06-27 22:53:50,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 389 transitions, 6600 flow [2024-06-27 22:53:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:53:50,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49135802469135803 [2024-06-27 22:53:50,094 INFO L175 Difference]: Start difference. First operand has 172 places, 314 transitions, 5047 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:53:50,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 389 transitions, 6600 flow [2024-06-27 22:53:50,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 389 transitions, 6366 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:53:50,486 INFO L231 Difference]: Finished difference. Result has 177 places, 343 transitions, 5721 flow [2024-06-27 22:53:50,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5721, PETRI_PLACES=177, PETRI_TRANSITIONS=343} [2024-06-27 22:53:50,487 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-27 22:53:50,487 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 343 transitions, 5721 flow [2024-06-27 22:53:50,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:50,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:50,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:50,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:53:50,487 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 22:53:50,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1276876720, now seen corresponding path program 6 times [2024-06-27 22:53:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714167104] [2024-06-27 22:53:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714167104] [2024-06-27 22:53:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714167104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:52,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818148828] [2024-06-27 22:53:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:52,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:52,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 343 transitions, 5721 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:52,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:52,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:52,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:54,164 INFO L124 PetriNetUnfolderBase]: 5648/9445 cut-off events. [2024-06-27 22:53:54,164 INFO L125 PetriNetUnfolderBase]: For 151676/151682 co-relation queries the response was YES. [2024-06-27 22:53:54,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56193 conditions, 9445 events. 5648/9445 cut-off events. For 151676/151682 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 63638 event pairs, 2297 based on Foata normal form. 8/9171 useless extension candidates. Maximal degree in co-relation 56110. Up to 7824 conditions per place. [2024-06-27 22:53:54,244 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 317 selfloop transitions, 70 changer transitions 0/395 dead transitions. [2024-06-27 22:53:54,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 395 transitions, 6892 flow [2024-06-27 22:53:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-27 22:53:54,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47901234567901235 [2024-06-27 22:53:54,246 INFO L175 Difference]: Start difference. First operand has 177 places, 343 transitions, 5721 flow. Second operand 9 states and 194 transitions. [2024-06-27 22:53:54,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 395 transitions, 6892 flow [2024-06-27 22:53:54,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 395 transitions, 6636 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:53:54,597 INFO L231 Difference]: Finished difference. Result has 182 places, 354 transitions, 5902 flow [2024-06-27 22:53:54,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5902, PETRI_PLACES=182, PETRI_TRANSITIONS=354} [2024-06-27 22:53:54,598 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 131 predicate places. [2024-06-27 22:53:54,598 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 354 transitions, 5902 flow [2024-06-27 22:53:54,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:54,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:54,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:54,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:53:54,599 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 22:53:54,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1832563500, now seen corresponding path program 7 times [2024-06-27 22:53:54,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:54,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961519003] [2024-06-27 22:53:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:55,913 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 22:53:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:55,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961519003] [2024-06-27 22:53:55,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961519003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:55,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:55,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515190403] [2024-06-27 22:53:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:56,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:56,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 354 transitions, 5902 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:56,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:56,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:56,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:57,610 INFO L124 PetriNetUnfolderBase]: 5648/9442 cut-off events. [2024-06-27 22:53:57,610 INFO L125 PetriNetUnfolderBase]: For 154718/154724 co-relation queries the response was YES. [2024-06-27 22:53:57,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56634 conditions, 9442 events. 5648/9442 cut-off events. For 154718/154724 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 63468 event pairs, 2292 based on Foata normal form. 8/9167 useless extension candidates. Maximal degree in co-relation 56548. Up to 8075 conditions per place. [2024-06-27 22:53:57,730 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 365 selfloop transitions, 22 changer transitions 0/395 dead transitions. [2024-06-27 22:53:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 395 transitions, 6900 flow [2024-06-27 22:53:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-27 22:53:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2024-06-27 22:53:57,732 INFO L175 Difference]: Start difference. First operand has 182 places, 354 transitions, 5902 flow. Second operand 9 states and 188 transitions. [2024-06-27 22:53:57,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 395 transitions, 6900 flow [2024-06-27 22:53:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 395 transitions, 6783 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:58,247 INFO L231 Difference]: Finished difference. Result has 186 places, 356 transitions, 5894 flow [2024-06-27 22:53:58,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5894, PETRI_PLACES=186, PETRI_TRANSITIONS=356} [2024-06-27 22:53:58,248 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 135 predicate places. [2024-06-27 22:53:58,248 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 356 transitions, 5894 flow [2024-06-27 22:53:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 22:53:58,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:58,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:58,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:53:58,249 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:58,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash -314381039, now seen corresponding path program 1 times [2024-06-27 22:53:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267533373] [2024-06-27 22:53:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:59,823 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 22:53:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267533373] [2024-06-27 22:53:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267533373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:59,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:59,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142220165] [2024-06-27 22:53:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:59,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:59,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:53:59,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 356 transitions, 5894 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 22:53:59,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:59,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:53:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:01,694 INFO L124 PetriNetUnfolderBase]: 5750/9597 cut-off events. [2024-06-27 22:54:01,695 INFO L125 PetriNetUnfolderBase]: For 162525/162525 co-relation queries the response was YES. [2024-06-27 22:54:01,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57264 conditions, 9597 events. 5750/9597 cut-off events. For 162525/162525 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 64695 event pairs, 2344 based on Foata normal form. 6/9314 useless extension candidates. Maximal degree in co-relation 57177. Up to 8091 conditions per place. [2024-06-27 22:54:01,797 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 359 selfloop transitions, 27 changer transitions 0/394 dead transitions. [2024-06-27 22:54:01,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 394 transitions, 6952 flow [2024-06-27 22:54:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:54:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:54:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 22:54:01,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-06-27 22:54:01,799 INFO L175 Difference]: Start difference. First operand has 186 places, 356 transitions, 5894 flow. Second operand 6 states and 142 transitions. [2024-06-27 22:54:01,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 394 transitions, 6952 flow [2024-06-27 22:54:02,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 394 transitions, 6871 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:54:02,234 INFO L231 Difference]: Finished difference. Result has 185 places, 362 transitions, 5929 flow [2024-06-27 22:54:02,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5929, PETRI_PLACES=185, PETRI_TRANSITIONS=362} [2024-06-27 22:54:02,234 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 134 predicate places. [2024-06-27 22:54:02,235 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 362 transitions, 5929 flow [2024-06-27 22:54:02,235 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 22:54:02,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:02,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:54:02,235 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:02,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1861182907, now seen corresponding path program 2 times [2024-06-27 22:54:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:02,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15047125] [2024-06-27 22:54:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:03,528 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 22:54:03,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15047125] [2024-06-27 22:54:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15047125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:03,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:54:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682353862] [2024-06-27 22:54:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:03,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:54:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:54:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:54:03,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:03,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 362 transitions, 5929 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 22:54:03,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:03,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:03,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:05,306 INFO L124 PetriNetUnfolderBase]: 5732/9575 cut-off events. [2024-06-27 22:54:05,306 INFO L125 PetriNetUnfolderBase]: For 164724/164724 co-relation queries the response was YES. [2024-06-27 22:54:05,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57652 conditions, 9575 events. 5732/9575 cut-off events. For 164724/164724 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 64514 event pairs, 2337 based on Foata normal form. 6/9291 useless extension candidates. Maximal degree in co-relation 57564. Up to 8198 conditions per place. [2024-06-27 22:54:05,424 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 360 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2024-06-27 22:54:05,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 386 transitions, 6809 flow [2024-06-27 22:54:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-27 22:54:05,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 22:54:05,426 INFO L175 Difference]: Start difference. First operand has 185 places, 362 transitions, 5929 flow. Second operand 7 states and 144 transitions. [2024-06-27 22:54:05,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 386 transitions, 6809 flow [2024-06-27 22:54:05,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 386 transitions, 6771 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:05,932 INFO L231 Difference]: Finished difference. Result has 190 places, 362 transitions, 5934 flow [2024-06-27 22:54:05,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5891, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5934, PETRI_PLACES=190, PETRI_TRANSITIONS=362} [2024-06-27 22:54:05,933 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 139 predicate places. [2024-06-27 22:54:05,933 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 362 transitions, 5934 flow [2024-06-27 22:54:05,933 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 22:54:05,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:05,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:54:05,934 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 22:54:05,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1529546812, now seen corresponding path program 1 times [2024-06-27 22:54:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:05,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438444244] [2024-06-27 22:54:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:07,876 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 22:54:07,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:07,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438444244] [2024-06-27 22:54:07,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438444244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:07,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:07,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469191176] [2024-06-27 22:54:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:07,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:07,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:54:07,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 362 transitions, 5934 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 22:54:07,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:07,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:54:07,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:09,653 INFO L124 PetriNetUnfolderBase]: 5546/9393 cut-off events. [2024-06-27 22:54:09,653 INFO L125 PetriNetUnfolderBase]: For 174751/174775 co-relation queries the response was YES. [2024-06-27 22:54:09,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56316 conditions, 9393 events. 5546/9393 cut-off events. For 174751/174775 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 64959 event pairs, 1690 based on Foata normal form. 30/9091 useless extension candidates. Maximal degree in co-relation 56226. Up to 7053 conditions per place. [2024-06-27 22:54:09,781 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 220 selfloop transitions, 184 changer transitions 0/415 dead transitions. [2024-06-27 22:54:09,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 415 transitions, 7121 flow [2024-06-27 22:54:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:54:09,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 22:54:09,783 INFO L175 Difference]: Start difference. First operand has 190 places, 362 transitions, 5934 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:54:09,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 415 transitions, 7121 flow [2024-06-27 22:54:10,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 415 transitions, 7037 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:54:10,282 INFO L231 Difference]: Finished difference. Result has 190 places, 366 transitions, 6376 flow [2024-06-27 22:54:10,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5850, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6376, PETRI_PLACES=190, PETRI_TRANSITIONS=366} [2024-06-27 22:54:10,283 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 139 predicate places. [2024-06-27 22:54:10,283 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 366 transitions, 6376 flow [2024-06-27 22:54:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 22:54:10,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:54:10,284 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:10,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1407615913, now seen corresponding path program 1 times [2024-06-27 22:54:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284933571] [2024-06-27 22:54:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:11,644 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 22:54:11,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:11,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284933571] [2024-06-27 22:54:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284933571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:11,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:11,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:11,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305467984] [2024-06-27 22:54:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:11,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:11,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 366 transitions, 6376 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:11,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:11,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:11,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:13,672 INFO L124 PetriNetUnfolderBase]: 5932/9878 cut-off events. [2024-06-27 22:54:13,672 INFO L125 PetriNetUnfolderBase]: For 190576/190586 co-relation queries the response was YES. [2024-06-27 22:54:13,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61655 conditions, 9878 events. 5932/9878 cut-off events. For 190576/190586 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 66987 event pairs, 1877 based on Foata normal form. 10/9591 useless extension candidates. Maximal degree in co-relation 61567. Up to 8155 conditions per place. [2024-06-27 22:54:13,799 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 345 selfloop transitions, 98 changer transitions 0/451 dead transitions. [2024-06-27 22:54:13,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 451 transitions, 8279 flow [2024-06-27 22:54:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:54:13,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-27 22:54:13,801 INFO L175 Difference]: Start difference. First operand has 190 places, 366 transitions, 6376 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:54:13,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 451 transitions, 8279 flow [2024-06-27 22:54:14,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 451 transitions, 8081 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:14,393 INFO L231 Difference]: Finished difference. Result has 198 places, 415 transitions, 7314 flow [2024-06-27 22:54:14,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7314, PETRI_PLACES=198, PETRI_TRANSITIONS=415} [2024-06-27 22:54:14,394 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2024-06-27 22:54:14,394 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 415 transitions, 7314 flow [2024-06-27 22:54:14,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:14,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:14,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:14,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:54:14,395 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 22:54:14,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1461622390, now seen corresponding path program 2 times [2024-06-27 22:54:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:14,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988579654] [2024-06-27 22:54:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:16,187 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 22:54:16,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:16,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988579654] [2024-06-27 22:54:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988579654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:16,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:16,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:16,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606674082] [2024-06-27 22:54:16,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:16,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:16,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:16,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:16,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:54:16,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 415 transitions, 7314 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 22:54:16,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:16,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:54:16,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:18,158 INFO L124 PetriNetUnfolderBase]: 5656/9608 cut-off events. [2024-06-27 22:54:18,158 INFO L125 PetriNetUnfolderBase]: For 207541/207555 co-relation queries the response was YES. [2024-06-27 22:54:18,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61519 conditions, 9608 events. 5656/9608 cut-off events. For 207541/207555 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 67090 event pairs, 1855 based on Foata normal form. 22/9275 useless extension candidates. Maximal degree in co-relation 61426. Up to 7256 conditions per place. [2024-06-27 22:54:18,284 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 264 selfloop transitions, 191 changer transitions 0/468 dead transitions. [2024-06-27 22:54:18,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 468 transitions, 8602 flow [2024-06-27 22:54:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:54:18,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-06-27 22:54:18,286 INFO L175 Difference]: Start difference. First operand has 198 places, 415 transitions, 7314 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:54:18,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 468 transitions, 8602 flow [2024-06-27 22:54:18,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 468 transitions, 8440 flow, removed 81 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:18,935 INFO L231 Difference]: Finished difference. Result has 207 places, 418 transitions, 7677 flow [2024-06-27 22:54:18,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7152, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7677, PETRI_PLACES=207, PETRI_TRANSITIONS=418} [2024-06-27 22:54:18,935 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 156 predicate places. [2024-06-27 22:54:18,936 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 418 transitions, 7677 flow [2024-06-27 22:54:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 22:54:18,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:18,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:18,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:54:18,936 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 22:54:18,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1456058200, now seen corresponding path program 3 times [2024-06-27 22:54:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3468806] [2024-06-27 22:54:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:20,894 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 22:54:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3468806] [2024-06-27 22:54:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3468806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611569315] [2024-06-27 22:54:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:20,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:20,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:20,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:20,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 418 transitions, 7677 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:20,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:20,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:20,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:22,957 INFO L124 PetriNetUnfolderBase]: 6158/10324 cut-off events. [2024-06-27 22:54:22,957 INFO L125 PetriNetUnfolderBase]: For 234969/234982 co-relation queries the response was YES. [2024-06-27 22:54:23,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67811 conditions, 10324 events. 6158/10324 cut-off events. For 234969/234982 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 71155 event pairs, 1906 based on Foata normal form. 22/10020 useless extension candidates. Maximal degree in co-relation 67713. Up to 7636 conditions per place. [2024-06-27 22:54:23,142 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 317 selfloop transitions, 149 changer transitions 0/474 dead transitions. [2024-06-27 22:54:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 474 transitions, 9086 flow [2024-06-27 22:54:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:54:23,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:54:23,146 INFO L175 Difference]: Start difference. First operand has 207 places, 418 transitions, 7677 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:54:23,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 474 transitions, 9086 flow [2024-06-27 22:54:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 474 transitions, 8764 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:24,062 INFO L231 Difference]: Finished difference. Result has 212 places, 426 transitions, 7960 flow [2024-06-27 22:54:24,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7391, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7960, PETRI_PLACES=212, PETRI_TRANSITIONS=426} [2024-06-27 22:54:24,063 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2024-06-27 22:54:24,063 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 426 transitions, 7960 flow [2024-06-27 22:54:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:24,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:24,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:54:24,064 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:24,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:24,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1852535969, now seen corresponding path program 2 times [2024-06-27 22:54:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630083540] [2024-06-27 22:54:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630083540] [2024-06-27 22:54:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630083540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:25,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:25,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254519730] [2024-06-27 22:54:25,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:25,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:25,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:25,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:25,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:25,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 426 transitions, 7960 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:25,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:25,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:25,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:27,953 INFO L124 PetriNetUnfolderBase]: 6302/10484 cut-off events. [2024-06-27 22:54:27,953 INFO L125 PetriNetUnfolderBase]: For 234673/234681 co-relation queries the response was YES. [2024-06-27 22:54:28,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70205 conditions, 10484 events. 6302/10484 cut-off events. For 234673/234681 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 71754 event pairs, 1974 based on Foata normal form. 8/10181 useless extension candidates. Maximal degree in co-relation 70104. Up to 8636 conditions per place. [2024-06-27 22:54:28,083 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 367 selfloop transitions, 122 changer transitions 0/497 dead transitions. [2024-06-27 22:54:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 497 transitions, 9706 flow [2024-06-27 22:54:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:54:28,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 22:54:28,085 INFO L175 Difference]: Start difference. First operand has 212 places, 426 transitions, 7960 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:54:28,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 497 transitions, 9706 flow [2024-06-27 22:54:28,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 497 transitions, 9516 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:28,869 INFO L231 Difference]: Finished difference. Result has 220 places, 460 transitions, 8540 flow [2024-06-27 22:54:28,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7770, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8540, PETRI_PLACES=220, PETRI_TRANSITIONS=460} [2024-06-27 22:54:28,870 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 169 predicate places. [2024-06-27 22:54:28,870 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 460 transitions, 8540 flow [2024-06-27 22:54:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:28,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:28,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:54:28,871 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:28,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1934235617, now seen corresponding path program 3 times [2024-06-27 22:54:28,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860790974] [2024-06-27 22:54:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:30,376 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 22:54:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860790974] [2024-06-27 22:54:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860790974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:30,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056772029] [2024-06-27 22:54:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:30,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:30,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 460 transitions, 8540 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:32,629 INFO L124 PetriNetUnfolderBase]: 6361/10538 cut-off events. [2024-06-27 22:54:32,629 INFO L125 PetriNetUnfolderBase]: For 237146/237148 co-relation queries the response was YES. [2024-06-27 22:54:32,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71773 conditions, 10538 events. 6361/10538 cut-off events. For 237146/237148 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 71707 event pairs, 2288 based on Foata normal form. 4/10239 useless extension candidates. Maximal degree in co-relation 71667. Up to 9146 conditions per place. [2024-06-27 22:54:32,786 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 461 selfloop transitions, 53 changer transitions 0/522 dead transitions. [2024-06-27 22:54:32,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 522 transitions, 10224 flow [2024-06-27 22:54:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-27 22:54:32,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47901234567901235 [2024-06-27 22:54:32,788 INFO L175 Difference]: Start difference. First operand has 220 places, 460 transitions, 8540 flow. Second operand 9 states and 194 transitions. [2024-06-27 22:54:32,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 522 transitions, 10224 flow [2024-06-27 22:54:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 522 transitions, 10024 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:33,580 INFO L231 Difference]: Finished difference. Result has 230 places, 491 transitions, 9012 flow [2024-06-27 22:54:33,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9012, PETRI_PLACES=230, PETRI_TRANSITIONS=491} [2024-06-27 22:54:33,582 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 179 predicate places. [2024-06-27 22:54:33,582 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 491 transitions, 9012 flow [2024-06-27 22:54:33,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:33,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:33,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:33,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:54:33,582 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:33,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash 690190043, now seen corresponding path program 1 times [2024-06-27 22:54:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:33,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060667309] [2024-06-27 22:54:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:35,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:35,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060667309] [2024-06-27 22:54:35,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060667309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:35,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:35,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:35,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573591844] [2024-06-27 22:54:35,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:35,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:35,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:36,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:36,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 491 transitions, 9012 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:36,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:36,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:36,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:38,585 INFO L124 PetriNetUnfolderBase]: 6487/10736 cut-off events. [2024-06-27 22:54:38,587 INFO L125 PetriNetUnfolderBase]: For 247078/247090 co-relation queries the response was YES. [2024-06-27 22:54:38,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72329 conditions, 10736 events. 6487/10736 cut-off events. For 247078/247090 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 73224 event pairs, 2385 based on Foata normal form. 24/10456 useless extension candidates. Maximal degree in co-relation 72218. Up to 8104 conditions per place. [2024-06-27 22:54:38,719 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 386 selfloop transitions, 157 changer transitions 0/551 dead transitions. [2024-06-27 22:54:38,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 551 transitions, 10562 flow [2024-06-27 22:54:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 22:54:38,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49876543209876545 [2024-06-27 22:54:38,725 INFO L175 Difference]: Start difference. First operand has 230 places, 491 transitions, 9012 flow. Second operand 9 states and 202 transitions. [2024-06-27 22:54:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 551 transitions, 10562 flow [2024-06-27 22:54:39,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 551 transitions, 10394 flow, removed 83 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:39,631 INFO L231 Difference]: Finished difference. Result has 238 places, 493 transitions, 9222 flow [2024-06-27 22:54:39,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9222, PETRI_PLACES=238, PETRI_TRANSITIONS=493} [2024-06-27 22:54:39,633 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2024-06-27 22:54:39,633 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 493 transitions, 9222 flow [2024-06-27 22:54:39,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:39,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:39,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:54:39,633 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:39,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1896433325, now seen corresponding path program 4 times [2024-06-27 22:54:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341663135] [2024-06-27 22:54:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:40,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341663135] [2024-06-27 22:54:40,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341663135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:40,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:40,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345381740] [2024-06-27 22:54:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:40,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:40,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:40,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 493 transitions, 9222 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:40,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:40,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:43,489 INFO L124 PetriNetUnfolderBase]: 6826/11359 cut-off events. [2024-06-27 22:54:43,490 INFO L125 PetriNetUnfolderBase]: For 258548/258554 co-relation queries the response was YES. [2024-06-27 22:54:43,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76633 conditions, 11359 events. 6826/11359 cut-off events. For 258548/258554 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 78874 event pairs, 2543 based on Foata normal form. 7/11023 useless extension candidates. Maximal degree in co-relation 76519. Up to 8959 conditions per place. [2024-06-27 22:54:43,630 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 451 selfloop transitions, 152 changer transitions 0/611 dead transitions. [2024-06-27 22:54:43,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 611 transitions, 11846 flow [2024-06-27 22:54:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:54:43,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-06-27 22:54:43,632 INFO L175 Difference]: Start difference. First operand has 238 places, 493 transitions, 9222 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:54:43,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 611 transitions, 11846 flow [2024-06-27 22:54:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 611 transitions, 11533 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:54:44,444 INFO L231 Difference]: Finished difference. Result has 241 places, 542 transitions, 10127 flow [2024-06-27 22:54:44,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8913, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10127, PETRI_PLACES=241, PETRI_TRANSITIONS=542} [2024-06-27 22:54:44,445 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 190 predicate places. [2024-06-27 22:54:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 542 transitions, 10127 flow [2024-06-27 22:54:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:44,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:44,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:54:44,446 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:44,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -104084745, now seen corresponding path program 5 times [2024-06-27 22:54:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174324768] [2024-06-27 22:54:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:45,760 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 22:54:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174324768] [2024-06-27 22:54:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174324768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:45,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:45,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:45,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275469273] [2024-06-27 22:54:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:45,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:45,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 542 transitions, 10127 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:45,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:45,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:45,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:48,310 INFO L124 PetriNetUnfolderBase]: 7020/11594 cut-off events. [2024-06-27 22:54:48,310 INFO L125 PetriNetUnfolderBase]: For 274781/274781 co-relation queries the response was YES. [2024-06-27 22:54:48,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80838 conditions, 11594 events. 7020/11594 cut-off events. For 274781/274781 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 79971 event pairs, 2606 based on Foata normal form. 3/11265 useless extension candidates. Maximal degree in co-relation 80720. Up to 9905 conditions per place. [2024-06-27 22:54:48,513 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 549 selfloop transitions, 75 changer transitions 0/632 dead transitions. [2024-06-27 22:54:48,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 632 transitions, 12576 flow [2024-06-27 22:54:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 22:54:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 22:54:48,525 INFO L175 Difference]: Start difference. First operand has 241 places, 542 transitions, 10127 flow. Second operand 8 states and 176 transitions. [2024-06-27 22:54:48,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 632 transitions, 12576 flow [2024-06-27 22:54:49,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 632 transitions, 12463 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:49,762 INFO L231 Difference]: Finished difference. Result has 250 places, 577 transitions, 10890 flow [2024-06-27 22:54:49,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10032, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10890, PETRI_PLACES=250, PETRI_TRANSITIONS=577} [2024-06-27 22:54:49,764 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2024-06-27 22:54:49,764 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 577 transitions, 10890 flow [2024-06-27 22:54:49,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:54:49,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:49,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:49,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:54:49,765 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:49,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1140379096, now seen corresponding path program 4 times [2024-06-27 22:54:49,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:49,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253133180] [2024-06-27 22:54:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253133180] [2024-06-27 22:54:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253133180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:54:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582959418] [2024-06-27 22:54:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:51,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:54:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:54:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:54:51,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:51,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 577 transitions, 10890 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:51,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:51,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:54,154 INFO L124 PetriNetUnfolderBase]: 7121/11735 cut-off events. [2024-06-27 22:54:54,154 INFO L125 PetriNetUnfolderBase]: For 293529/293541 co-relation queries the response was YES. [2024-06-27 22:54:54,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82693 conditions, 11735 events. 7121/11735 cut-off events. For 293529/293541 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 80733 event pairs, 2554 based on Foata normal form. 20/11422 useless extension candidates. Maximal degree in co-relation 82570. Up to 10007 conditions per place. [2024-06-27 22:54:54,310 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 592 selfloop transitions, 29 changer transitions 0/629 dead transitions. [2024-06-27 22:54:54,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 629 transitions, 12574 flow [2024-06-27 22:54:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 22:54:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765432098765432 [2024-06-27 22:54:54,312 INFO L175 Difference]: Start difference. First operand has 250 places, 577 transitions, 10890 flow. Second operand 9 states and 193 transitions. [2024-06-27 22:54:54,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 629 transitions, 12574 flow [2024-06-27 22:54:55,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 629 transitions, 12433 flow, removed 69 selfloop flow, removed 1 redundant places. [2024-06-27 22:54:55,688 INFO L231 Difference]: Finished difference. Result has 260 places, 582 transitions, 11012 flow [2024-06-27 22:54:55,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10749, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11012, PETRI_PLACES=260, PETRI_TRANSITIONS=582} [2024-06-27 22:54:55,689 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 209 predicate places. [2024-06-27 22:54:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 582 transitions, 11012 flow [2024-06-27 22:54:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:55,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:55,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:55,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:54:55,689 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:55,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -731594468, now seen corresponding path program 5 times [2024-06-27 22:54:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137395783] [2024-06-27 22:54:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:58,045 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 22:54:58,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:58,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137395783] [2024-06-27 22:54:58,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137395783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:58,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:58,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:54:58,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616821530] [2024-06-27 22:54:58,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:54:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:54:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:54:58,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:54:58,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 582 transitions, 11012 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:58,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:58,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:54:58,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:00,975 INFO L124 PetriNetUnfolderBase]: 7121/11758 cut-off events. [2024-06-27 22:55:00,976 INFO L125 PetriNetUnfolderBase]: For 299901/299910 co-relation queries the response was YES. [2024-06-27 22:55:01,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82899 conditions, 11758 events. 7121/11758 cut-off events. For 299901/299910 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 81272 event pairs, 2584 based on Foata normal form. 18/11435 useless extension candidates. Maximal degree in co-relation 82771. Up to 9878 conditions per place. [2024-06-27 22:55:01,149 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 557 selfloop transitions, 67 changer transitions 0/632 dead transitions. [2024-06-27 22:55:01,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 632 transitions, 12570 flow [2024-06-27 22:55:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 22:55:01,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765432098765432 [2024-06-27 22:55:01,151 INFO L175 Difference]: Start difference. First operand has 260 places, 582 transitions, 11012 flow. Second operand 9 states and 193 transitions. [2024-06-27 22:55:01,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 632 transitions, 12570 flow [2024-06-27 22:55:02,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 632 transitions, 12392 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:02,508 INFO L231 Difference]: Finished difference. Result has 265 places, 590 transitions, 11092 flow [2024-06-27 22:55:02,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10766, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11092, PETRI_PLACES=265, PETRI_TRANSITIONS=590} [2024-06-27 22:55:02,509 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 214 predicate places. [2024-06-27 22:55:02,509 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 590 transitions, 11092 flow [2024-06-27 22:55:02,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:02,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:02,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:55:02,510 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:02,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 236638359, now seen corresponding path program 6 times [2024-06-27 22:55:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041735198] [2024-06-27 22:55:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:03,731 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 22:55:03,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041735198] [2024-06-27 22:55:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041735198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22489543] [2024-06-27 22:55:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:03,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:03,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 590 transitions, 11092 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:55:03,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:03,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:03,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:06,683 INFO L124 PetriNetUnfolderBase]: 7260/11974 cut-off events. [2024-06-27 22:55:06,684 INFO L125 PetriNetUnfolderBase]: For 298428/298428 co-relation queries the response was YES. [2024-06-27 22:55:06,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84988 conditions, 11974 events. 7260/11974 cut-off events. For 298428/298428 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 82866 event pairs, 2663 based on Foata normal form. 3/11633 useless extension candidates. Maximal degree in co-relation 84857. Up to 10345 conditions per place. [2024-06-27 22:55:06,891 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 601 selfloop transitions, 45 changer transitions 0/654 dead transitions. [2024-06-27 22:55:06,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 654 transitions, 13328 flow [2024-06-27 22:55:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 22:55:06,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:55:06,893 INFO L175 Difference]: Start difference. First operand has 265 places, 590 transitions, 11092 flow. Second operand 8 states and 168 transitions. [2024-06-27 22:55:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 654 transitions, 13328 flow [2024-06-27 22:55:08,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 654 transitions, 13150 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-27 22:55:08,145 INFO L231 Difference]: Finished difference. Result has 271 places, 612 transitions, 11530 flow [2024-06-27 22:55:08,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10914, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11530, PETRI_PLACES=271, PETRI_TRANSITIONS=612} [2024-06-27 22:55:08,146 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2024-06-27 22:55:08,146 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 612 transitions, 11530 flow [2024-06-27 22:55:08,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:55:08,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:08,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:08,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:55:08,147 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:08,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1542394105, now seen corresponding path program 1 times [2024-06-27 22:55:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049390303] [2024-06-27 22:55:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:10,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:10,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049390303] [2024-06-27 22:55:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049390303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984104641] [2024-06-27 22:55:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:10,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:10,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:10,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 612 transitions, 11530 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:10,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:10,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:13,087 INFO L124 PetriNetUnfolderBase]: 7255/11957 cut-off events. [2024-06-27 22:55:13,088 INFO L125 PetriNetUnfolderBase]: For 297621/297621 co-relation queries the response was YES. [2024-06-27 22:55:13,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84422 conditions, 11957 events. 7255/11957 cut-off events. For 297621/297621 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 82650 event pairs, 2647 based on Foata normal form. 2/11614 useless extension candidates. Maximal degree in co-relation 84288. Up to 10432 conditions per place. [2024-06-27 22:55:13,241 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 611 selfloop transitions, 23 changer transitions 0/642 dead transitions. [2024-06-27 22:55:13,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 642 transitions, 12995 flow [2024-06-27 22:55:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:55:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 22:55:13,243 INFO L175 Difference]: Start difference. First operand has 271 places, 612 transitions, 11530 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:55:13,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 642 transitions, 12995 flow [2024-06-27 22:55:14,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 642 transitions, 12728 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-27 22:55:14,397 INFO L231 Difference]: Finished difference. Result has 276 places, 617 transitions, 11379 flow [2024-06-27 22:55:14,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=11263, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11379, PETRI_PLACES=276, PETRI_TRANSITIONS=617} [2024-06-27 22:55:14,398 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-06-27 22:55:14,398 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 617 transitions, 11379 flow [2024-06-27 22:55:14,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:14,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:14,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:14,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:55:14,398 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:14,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -318190491, now seen corresponding path program 1 times [2024-06-27 22:55:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:14,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211547019] [2024-06-27 22:55:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:14,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211547019] [2024-06-27 22:55:15,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211547019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:15,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:15,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:15,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373201865] [2024-06-27 22:55:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:15,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:15,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:15,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:15,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:15,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 617 transitions, 11379 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 22:55:15,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:15,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:15,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:18,943 INFO L124 PetriNetUnfolderBase]: 7523/11880 cut-off events. [2024-06-27 22:55:18,943 INFO L125 PetriNetUnfolderBase]: For 311721/311737 co-relation queries the response was YES. [2024-06-27 22:55:19,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87103 conditions, 11880 events. 7523/11880 cut-off events. For 311721/311737 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 78422 event pairs, 1585 based on Foata normal form. 16/11680 useless extension candidates. Maximal degree in co-relation 86967. Up to 8153 conditions per place. [2024-06-27 22:55:19,502 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 408 selfloop transitions, 318 changer transitions 0/734 dead transitions. [2024-06-27 22:55:19,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 734 transitions, 14423 flow [2024-06-27 22:55:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:55:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-27 22:55:19,511 INFO L175 Difference]: Start difference. First operand has 276 places, 617 transitions, 11379 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:55:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 734 transitions, 14423 flow [2024-06-27 22:55:21,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 734 transitions, 14362 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:21,095 INFO L231 Difference]: Finished difference. Result has 283 places, 685 transitions, 13569 flow [2024-06-27 22:55:21,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=11318, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13569, PETRI_PLACES=283, PETRI_TRANSITIONS=685} [2024-06-27 22:55:21,096 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 232 predicate places. [2024-06-27 22:55:21,096 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 685 transitions, 13569 flow [2024-06-27 22:55:21,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 22:55:21,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:21,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:21,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:55:21,097 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:21,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash -686658229, now seen corresponding path program 2 times [2024-06-27 22:55:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:21,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309161210] [2024-06-27 22:55:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:21,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309161210] [2024-06-27 22:55:22,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309161210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206069632] [2024-06-27 22:55:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:55:23,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 685 transitions, 13569 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 22:55:23,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:23,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:55:23,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:26,283 INFO L124 PetriNetUnfolderBase]: 7144/11784 cut-off events. [2024-06-27 22:55:26,284 INFO L125 PetriNetUnfolderBase]: For 351494/351514 co-relation queries the response was YES. [2024-06-27 22:55:26,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90504 conditions, 11784 events. 7144/11784 cut-off events. For 351494/351514 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 82080 event pairs, 1716 based on Foata normal form. 17/11415 useless extension candidates. Maximal degree in co-relation 90363. Up to 8042 conditions per place. [2024-06-27 22:55:26,451 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 407 selfloop transitions, 335 changer transitions 0/761 dead transitions. [2024-06-27 22:55:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 761 transitions, 16199 flow [2024-06-27 22:55:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 22:55:26,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-06-27 22:55:26,452 INFO L175 Difference]: Start difference. First operand has 283 places, 685 transitions, 13569 flow. Second operand 7 states and 190 transitions. [2024-06-27 22:55:26,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 761 transitions, 16199 flow [2024-06-27 22:55:28,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 761 transitions, 15839 flow, removed 169 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:28,255 INFO L231 Difference]: Finished difference. Result has 289 places, 704 transitions, 14470 flow [2024-06-27 22:55:28,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=13321, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14470, PETRI_PLACES=289, PETRI_TRANSITIONS=704} [2024-06-27 22:55:28,255 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 238 predicate places. [2024-06-27 22:55:28,256 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 704 transitions, 14470 flow [2024-06-27 22:55:28,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 22:55:28,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:28,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:55:28,256 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:28,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -649487679, now seen corresponding path program 1 times [2024-06-27 22:55:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948266316] [2024-06-27 22:55:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:29,941 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 22:55:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948266316] [2024-06-27 22:55:29,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948266316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:29,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:29,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812243305] [2024-06-27 22:55:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:29,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:30,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:30,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 704 transitions, 14470 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:30,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:30,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:30,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:33,746 INFO L124 PetriNetUnfolderBase]: 7804/12457 cut-off events. [2024-06-27 22:55:33,747 INFO L125 PetriNetUnfolderBase]: For 379128/379143 co-relation queries the response was YES. [2024-06-27 22:55:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99614 conditions, 12457 events. 7804/12457 cut-off events. For 379128/379143 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 83992 event pairs, 1970 based on Foata normal form. 16/12188 useless extension candidates. Maximal degree in co-relation 99471. Up to 10067 conditions per place. [2024-06-27 22:55:34,047 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 561 selfloop transitions, 247 changer transitions 0/816 dead transitions. [2024-06-27 22:55:34,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 816 transitions, 17885 flow [2024-06-27 22:55:34,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:55:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:55:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 269 transitions. [2024-06-27 22:55:34,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981481481481482 [2024-06-27 22:55:34,057 INFO L175 Difference]: Start difference. First operand has 289 places, 704 transitions, 14470 flow. Second operand 12 states and 269 transitions. [2024-06-27 22:55:34,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 816 transitions, 17885 flow [2024-06-27 22:55:35,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 816 transitions, 17759 flow, removed 52 selfloop flow, removed 1 redundant places. [2024-06-27 22:55:35,849 INFO L231 Difference]: Finished difference. Result has 306 places, 766 transitions, 16536 flow [2024-06-27 22:55:35,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=14360, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16536, PETRI_PLACES=306, PETRI_TRANSITIONS=766} [2024-06-27 22:55:35,850 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-06-27 22:55:35,850 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 766 transitions, 16536 flow [2024-06-27 22:55:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:35,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:35,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:55:35,851 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:35,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash -686419219, now seen corresponding path program 3 times [2024-06-27 22:55:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953967596] [2024-06-27 22:55:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:38,171 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 22:55:38,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:38,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953967596] [2024-06-27 22:55:38,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953967596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:38,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:38,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:38,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793012089] [2024-06-27 22:55:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:38,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:38,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:38,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-27 22:55:38,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 766 transitions, 16536 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 22:55:38,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:38,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-27 22:55:38,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:42,202 INFO L124 PetriNetUnfolderBase]: 8012/13056 cut-off events. [2024-06-27 22:55:42,202 INFO L125 PetriNetUnfolderBase]: For 458699/458719 co-relation queries the response was YES. [2024-06-27 22:55:42,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108355 conditions, 13056 events. 8012/13056 cut-off events. For 458699/458719 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 92081 event pairs, 1895 based on Foata normal form. 22/12668 useless extension candidates. Maximal degree in co-relation 108203. Up to 8668 conditions per place. [2024-06-27 22:55:42,404 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 546 selfloop transitions, 319 changer transitions 0/885 dead transitions. [2024-06-27 22:55:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 885 transitions, 20357 flow [2024-06-27 22:55:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 22:55:42,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-06-27 22:55:42,405 INFO L175 Difference]: Start difference. First operand has 306 places, 766 transitions, 16536 flow. Second operand 7 states and 190 transitions. [2024-06-27 22:55:42,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 885 transitions, 20357 flow [2024-06-27 22:55:44,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 885 transitions, 19475 flow, removed 440 selfloop flow, removed 1 redundant places. [2024-06-27 22:55:44,825 INFO L231 Difference]: Finished difference. Result has 314 places, 814 transitions, 17743 flow [2024-06-27 22:55:44,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=15878, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17743, PETRI_PLACES=314, PETRI_TRANSITIONS=814} [2024-06-27 22:55:44,826 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 263 predicate places. [2024-06-27 22:55:44,827 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 814 transitions, 17743 flow [2024-06-27 22:55:44,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 22:55:44,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:44,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:55:44,833 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:44,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1115251557, now seen corresponding path program 1 times [2024-06-27 22:55:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521604080] [2024-06-27 22:55:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:55:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521604080] [2024-06-27 22:55:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521604080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:46,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:46,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:46,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679881928] [2024-06-27 22:55:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:46,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:46,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:46,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:46,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 814 transitions, 17743 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:55:46,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:46,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:46,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:51,156 INFO L124 PetriNetUnfolderBase]: 8574/13571 cut-off events. [2024-06-27 22:55:51,156 INFO L125 PetriNetUnfolderBase]: For 491821/491841 co-relation queries the response was YES. [2024-06-27 22:55:51,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13571 events. 8574/13571 cut-off events. For 491821/491841 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 91807 event pairs, 2037 based on Foata normal form. 20/13289 useless extension candidates. Maximal degree in co-relation 117467. Up to 11541 conditions per place. [2024-06-27 22:55:51,386 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 629 selfloop transitions, 227 changer transitions 0/864 dead transitions. [2024-06-27 22:55:51,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 864 transitions, 20419 flow [2024-06-27 22:55:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:55:51,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:55:51,388 INFO L175 Difference]: Start difference. First operand has 314 places, 814 transitions, 17743 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:55:51,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 864 transitions, 20419 flow [2024-06-27 22:55:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 864 transitions, 20256 flow, removed 70 selfloop flow, removed 1 redundant places. [2024-06-27 22:55:53,697 INFO L231 Difference]: Finished difference. Result has 321 places, 831 transitions, 18647 flow [2024-06-27 22:55:53,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=17580, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18647, PETRI_PLACES=321, PETRI_TRANSITIONS=831} [2024-06-27 22:55:53,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 270 predicate places. [2024-06-27 22:55:53,698 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 831 transitions, 18647 flow [2024-06-27 22:55:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:55:53,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:53,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:53,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:55:53,699 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:53,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash 168243109, now seen corresponding path program 2 times [2024-06-27 22:55:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131022507] [2024-06-27 22:55:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:55,216 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 22:55:55,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131022507] [2024-06-27 22:55:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131022507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046678623] [2024-06-27 22:55:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:55:55,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 831 transitions, 18647 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:55:55,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:55,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:55:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:59,437 INFO L124 PetriNetUnfolderBase]: 8558/13579 cut-off events. [2024-06-27 22:55:59,438 INFO L125 PetriNetUnfolderBase]: For 494299/494301 co-relation queries the response was YES. [2024-06-27 22:55:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117574 conditions, 13579 events. 8558/13579 cut-off events. For 494299/494301 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 92111 event pairs, 2427 based on Foata normal form. 6/13280 useless extension candidates. Maximal degree in co-relation 117415. Up to 12126 conditions per place. [2024-06-27 22:55:59,657 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 782 selfloop transitions, 71 changer transitions 0/861 dead transitions. [2024-06-27 22:55:59,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 861 transitions, 20506 flow [2024-06-27 22:55:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 22:55:59,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-27 22:55:59,659 INFO L175 Difference]: Start difference. First operand has 321 places, 831 transitions, 18647 flow. Second operand 9 states and 192 transitions. [2024-06-27 22:55:59,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 861 transitions, 20506 flow [2024-06-27 22:56:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 861 transitions, 20093 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-27 22:56:02,048 INFO L231 Difference]: Finished difference. Result has 327 places, 831 transitions, 18392 flow [2024-06-27 22:56:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=18234, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18392, PETRI_PLACES=327, PETRI_TRANSITIONS=831} [2024-06-27 22:56:02,049 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 276 predicate places. [2024-06-27 22:56:02,049 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 831 transitions, 18392 flow [2024-06-27 22:56:02,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 22:56:02,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:02,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:02,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:56:02,050 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:02,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 287973159, now seen corresponding path program 2 times [2024-06-27 22:56:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894157306] [2024-06-27 22:56:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:02,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:03,856 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 22:56:03,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:03,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894157306] [2024-06-27 22:56:03,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894157306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:03,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:03,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:03,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798259002] [2024-06-27 22:56:03,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:03,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:03,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:03,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-27 22:56:03,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 831 transitions, 18392 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:03,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:03,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-27 22:56:03,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:08,844 INFO L124 PetriNetUnfolderBase]: 9291/14591 cut-off events. [2024-06-27 22:56:08,844 INFO L125 PetriNetUnfolderBase]: For 557108/557123 co-relation queries the response was YES. [2024-06-27 22:56:08,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128094 conditions, 14591 events. 9291/14591 cut-off events. For 557108/557123 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 98747 event pairs, 2014 based on Foata normal form. 18/14299 useless extension candidates. Maximal degree in co-relation 127933. Up to 11291 conditions per place. [2024-06-27 22:56:09,065 INFO L140 encePairwiseOnDemand]: 28/45 looper letters, 692 selfloop transitions, 419 changer transitions 0/1119 dead transitions. [2024-06-27 22:56:09,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1119 transitions, 25931 flow [2024-06-27 22:56:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:56:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:56:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 312 transitions. [2024-06-27 22:56:09,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:56:09,067 INFO L175 Difference]: Start difference. First operand has 327 places, 831 transitions, 18392 flow. Second operand 13 states and 312 transitions. [2024-06-27 22:56:09,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1119 transitions, 25931 flow