./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe022_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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe022_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:30:19,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:30:19,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:30:19,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:30:19,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:30:19,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:30:19,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:30:19,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:30:19,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:30:19,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:30:19,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:30:19,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:30:19,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:30:19,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:30:19,809 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:30:19,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:30:19,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:30:19,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:30:19,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:30:19,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:30:19,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:30:19,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:30:19,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:30:19,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:30:19,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:30:19,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:30:19,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:30:19,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:30:19,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:30:19,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:30:19,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:30:19,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:30:19,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:30:19,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:30:19,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:30:19,827 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:30:19,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:30:19,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:30:19,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:30:20,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:30:20,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:30:20,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:30:20,237 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:30:20,238 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:30:20,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:30:20,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:30:20,374 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:30:20,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:30:21,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:30:22,317 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:30:22,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:30:22,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f464b0551/0dc06688b6004c07a411242e1d2ac3bf/FLAGed215a020 [2024-06-28 00:30:22,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f464b0551/0dc06688b6004c07a411242e1d2ac3bf [2024-06-28 00:30:22,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:30:22,374 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:30:22,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:30:22,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:30:22,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:30:22,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:30:20" (1/2) ... [2024-06-28 00:30:22,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760bbab4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:30:22, skipping insertion in model container [2024-06-28 00:30:22,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:30:20" (1/2) ... [2024-06-28 00:30:22,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@734f9f01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:30:22, skipping insertion in model container [2024-06-28 00:30:22,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:30:22" (2/2) ... [2024-06-28 00:30:22,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760bbab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:22, skipping insertion in model container [2024-06-28 00:30:22,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:30:22" (2/2) ... [2024-06-28 00:30:22,402 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:30:22,422 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:30:22,423 INFO L97 edCorrectnessWitness]: Location invariant before [L811-L811] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_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_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$w_buff0_used >= 0LL) && (0LL - (long long )y$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_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$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_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$r_buff0_thd1 + (long long )y$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$r_buff1_thd0 + (long long )y$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$read_delayed + (long long )y$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$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$r_buff1_thd0 >= 0LL) && (long long )y$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$read_delayed >= 0LL) && (long long )y$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$w_buff1_used >= 0LL) [2024-06-28 00:30:22,423 INFO L97 edCorrectnessWitness]: Location invariant before [L810-L810] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$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$r_buff1_thd0) + (long long )y$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$read_delayed) + (long long )y$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_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$r_buff1_thd0 >= 0LL) && (long long )y$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$read_delayed >= 0LL) && (long long )y$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_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$w_buff0_used >= 0LL) && (long long )y$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$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$r_buff1_thd0 >= 0LL) && (long long )y$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$read_delayed >= 0LL) && (long long )y$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) [2024-06-28 00:30:22,423 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:30:22,423 INFO L106 edCorrectnessWitness]: ghost_update [L808-L808] multithreaded = 1; [2024-06-28 00:30:22,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:30:23,036 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:30:23,045 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:30:23,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:30:23,341 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:30:23,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23 WrapperNode [2024-06-28 00:30:23,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:30:23,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:30:23,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:30:23,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:30:23,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,461 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-28 00:30:23,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:30:23,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:30:23,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:30:23,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:30:23,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,528 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]. [2024-06-28 00:30:23,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:30:23,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:30:23,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:30:23,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:30:23,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (1/1) ... [2024-06-28 00:30:23,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:30:23,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:30:23,646 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) [2024-06-28 00:30:23,705 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 [2024-06-28 00:30:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:30:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:30:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:30:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:30:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:30:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:30:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:30:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:30:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:30:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:30:23,735 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:30:23,916 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:30:23,918 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:30:24,604 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:30:24,605 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:30:24,871 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:30:24,871 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:30:24,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:30:24 BoogieIcfgContainer [2024-06-28 00:30:24,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:30:24,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:30:24,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:30:24,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:30:24,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:30:20" (1/4) ... [2024-06-28 00:30:24,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9cfb46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:30:24, skipping insertion in model container [2024-06-28 00:30:24,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:30:22" (2/4) ... [2024-06-28 00:30:24,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9cfb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:30:24, skipping insertion in model container [2024-06-28 00:30:24,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:30:23" (3/4) ... [2024-06-28 00:30:24,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9cfb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:30:24, skipping insertion in model container [2024-06-28 00:30:24,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:30:24" (4/4) ... [2024-06-28 00:30:24,881 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:30:24,906 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:30:24,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:30:24,907 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:30:24,974 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:30:25,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:30:25,071 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 00:30:25,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:30:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:30:25,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:30:25,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 00:30:25,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:30:25,109 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;@29abbd9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:30:25,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:30:25,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:30:25,113 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:30:25,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:30:25,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:25,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:30:25,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:25,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 325166542, now seen corresponding path program 1 times [2024-06-28 00:30:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623876854] [2024-06-28 00:30:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:27,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:27,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623876854] [2024-06-28 00:30:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623876854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:27,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:30:27,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539029318] [2024-06-28 00:30:27,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:30:27,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:30:27,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:30:27,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-28 00:30:27,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:27,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:27,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-28 00:30:27,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:27,469 INFO L124 PetriNetUnfolderBase]: 131/246 cut-off events. [2024-06-28 00:30:27,469 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:30:27,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 246 events. 131/246 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 855 event pairs, 79 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 495. Up to 231 conditions per place. [2024-06-28 00:30:27,474 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:30:27,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 117 flow [2024-06-28 00:30:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:30:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:30:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-28 00:30:27,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-28 00:30:27,490 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 54 transitions. [2024-06-28 00:30:27,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 117 flow [2024-06-28 00:30:27,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:30:27,499 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 00:30:27,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 00:30:27,503 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 00:30:27,516 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 00:30:27,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:27,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:27,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:27,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:30:27,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:27,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1046867617, now seen corresponding path program 1 times [2024-06-28 00:30:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365042023] [2024-06-28 00:30:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:28,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365042023] [2024-06-28 00:30:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365042023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:30:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906405517] [2024-06-28 00:30:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:30:28,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:30:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:30:28,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-28 00:30:28,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:28,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:28,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-28 00:30:28,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:29,065 INFO L124 PetriNetUnfolderBase]: 129/243 cut-off events. [2024-06-28 00:30:29,065 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-28 00:30:29,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 243 events. 129/243 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 865 event pairs, 41 based on Foata normal form. 4/246 useless extension candidates. Maximal degree in co-relation 563. Up to 214 conditions per place. [2024-06-28 00:30:29,070 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-28 00:30:29,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 174 flow [2024-06-28 00:30:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:30:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:30:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-28 00:30:29,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-06-28 00:30:29,085 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 70 transitions. [2024-06-28 00:30:29,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 174 flow [2024-06-28 00:30:29,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:30:29,090 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 104 flow [2024-06-28 00:30:29,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-28 00:30:29,091 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-28 00:30:29,091 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 104 flow [2024-06-28 00:30:29,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:29,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:29,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:29,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:30:29,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:29,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1906843397, now seen corresponding path program 1 times [2024-06-28 00:30:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136723348] [2024-06-28 00:30:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136723348] [2024-06-28 00:30:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136723348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:30,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:30:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260817459] [2024-06-28 00:30:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:30:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:30:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:30:30,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:30:30,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:30:30,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:30,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:30:30,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:30,645 INFO L124 PetriNetUnfolderBase]: 149/276 cut-off events. [2024-06-28 00:30:30,645 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-06-28 00:30:30,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 276 events. 149/276 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 927 event pairs, 55 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 742. Up to 250 conditions per place. [2024-06-28 00:30:30,647 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-06-28 00:30:30,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 239 flow [2024-06-28 00:30:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:30:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:30:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 00:30:30,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2024-06-28 00:30:30,651 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 104 flow. Second operand 5 states and 78 transitions. [2024-06-28 00:30:30,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 239 flow [2024-06-28 00:30:30,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 232 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 00:30:30,654 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 153 flow [2024-06-28 00:30:30,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-28 00:30:30,668 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2024-06-28 00:30:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 153 flow [2024-06-28 00:30:30,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:30:30,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:30,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:30:30,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1654625140, now seen corresponding path program 1 times [2024-06-28 00:30:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728623800] [2024-06-28 00:30:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728623800] [2024-06-28 00:30:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728623800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:32,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:30:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554352940] [2024-06-28 00:30:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:30:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:30:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:30:32,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:30:32,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:32,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:32,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:30:32,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:32,807 INFO L124 PetriNetUnfolderBase]: 146/271 cut-off events. [2024-06-28 00:30:32,807 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2024-06-28 00:30:32,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 271 events. 146/271 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 905 event pairs, 37 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 815. Up to 236 conditions per place. [2024-06-28 00:30:32,809 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 39 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-06-28 00:30:32,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 295 flow [2024-06-28 00:30:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:30:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:30:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 00:30:32,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-06-28 00:30:32,812 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 153 flow. Second operand 6 states and 92 transitions. [2024-06-28 00:30:32,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 295 flow [2024-06-28 00:30:32,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:30:32,816 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 188 flow [2024-06-28 00:30:32,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-28 00:30:32,817 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-28 00:30:32,817 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 188 flow [2024-06-28 00:30:32,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:32,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:32,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:32,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:30:32,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:32,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1474492860, now seen corresponding path program 1 times [2024-06-28 00:30:32,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:32,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921821878] [2024-06-28 00:30:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:32,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921821878] [2024-06-28 00:30:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921821878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:35,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:35,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:35,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039999847] [2024-06-28 00:30:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:35,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:35,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:30:35,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:35,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:35,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:30:35,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:35,564 INFO L124 PetriNetUnfolderBase]: 142/263 cut-off events. [2024-06-28 00:30:35,564 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-06-28 00:30:35,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 263 events. 142/263 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 848 event pairs, 18 based on Foata normal form. 4/266 useless extension candidates. Maximal degree in co-relation 864. Up to 210 conditions per place. [2024-06-28 00:30:35,566 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 39 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-06-28 00:30:35,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 322 flow [2024-06-28 00:30:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:30:35,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-28 00:30:35,580 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 188 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:30:35,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 322 flow [2024-06-28 00:30:35,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 305 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:35,586 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 187 flow [2024-06-28 00:30:35,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-06-28 00:30:35,590 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 20 predicate places. [2024-06-28 00:30:35,590 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 187 flow [2024-06-28 00:30:35,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:35,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:35,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:30:35,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:35,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -395381612, now seen corresponding path program 1 times [2024-06-28 00:30:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:35,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407622314] [2024-06-28 00:30:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407622314] [2024-06-28 00:30:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407622314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283178688] [2024-06-28 00:30:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:37,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:37,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:37,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:37,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:37,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:37,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:37,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:38,168 INFO L124 PetriNetUnfolderBase]: 183/334 cut-off events. [2024-06-28 00:30:38,168 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-06-28 00:30:38,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 334 events. 183/334 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1179 event pairs, 71 based on Foata normal form. 3/336 useless extension candidates. Maximal degree in co-relation 1140. Up to 272 conditions per place. [2024-06-28 00:30:38,172 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2024-06-28 00:30:38,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 452 flow [2024-06-28 00:30:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 00:30:38,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43842364532019706 [2024-06-28 00:30:38,173 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 187 flow. Second operand 7 states and 89 transitions. [2024-06-28 00:30:38,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 452 flow [2024-06-28 00:30:38,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 410 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:30:38,176 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 309 flow [2024-06-28 00:30:38,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-06-28 00:30:38,178 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 00:30:38,178 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 309 flow [2024-06-28 00:30:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:38,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:38,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:38,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:30:38,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:38,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1516677766, now seen corresponding path program 2 times [2024-06-28 00:30:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143313440] [2024-06-28 00:30:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143313440] [2024-06-28 00:30:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143313440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:40,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969770902] [2024-06-28 00:30:40,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:40,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:40,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:40,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:40,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:40,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:40,923 INFO L124 PetriNetUnfolderBase]: 190/345 cut-off events. [2024-06-28 00:30:40,936 INFO L125 PetriNetUnfolderBase]: For 969/971 co-relation queries the response was YES. [2024-06-28 00:30:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 345 events. 190/345 cut-off events. For 969/971 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1231 event pairs, 34 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 1319. Up to 281 conditions per place. [2024-06-28 00:30:40,938 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 50 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2024-06-28 00:30:40,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 575 flow [2024-06-28 00:30:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-28 00:30:40,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433497536945813 [2024-06-28 00:30:40,940 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 309 flow. Second operand 7 states and 90 transitions. [2024-06-28 00:30:40,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 575 flow [2024-06-28 00:30:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 567 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 00:30:40,944 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 460 flow [2024-06-28 00:30:40,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 00:30:40,945 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2024-06-28 00:30:40,946 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 460 flow [2024-06-28 00:30:40,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:40,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:40,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:40,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:30:40,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:40,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:40,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1685712106, now seen corresponding path program 3 times [2024-06-28 00:30:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:40,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249793948] [2024-06-28 00:30:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249793948] [2024-06-28 00:30:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249793948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:43,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:43,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:43,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668510643] [2024-06-28 00:30:43,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:43,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:43,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:43,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 460 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:43,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:43,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:43,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:43,522 INFO L124 PetriNetUnfolderBase]: 193/353 cut-off events. [2024-06-28 00:30:43,523 INFO L125 PetriNetUnfolderBase]: For 1458/1458 co-relation queries the response was YES. [2024-06-28 00:30:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 353 events. 193/353 cut-off events. For 1458/1458 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1272 event pairs, 59 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 1518. Up to 285 conditions per place. [2024-06-28 00:30:43,525 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-28 00:30:43,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 743 flow [2024-06-28 00:30:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:30:43,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-06-28 00:30:43,526 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 460 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:30:43,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 743 flow [2024-06-28 00:30:43,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 712 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 00:30:43,533 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 570 flow [2024-06-28 00:30:43,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=570, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-06-28 00:30:43,535 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-06-28 00:30:43,535 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 570 flow [2024-06-28 00:30:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:43,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:43,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:30:43,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:43,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 110358756, now seen corresponding path program 4 times [2024-06-28 00:30:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206304713] [2024-06-28 00:30:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:44,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:44,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206304713] [2024-06-28 00:30:44,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206304713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:44,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:44,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:44,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48182429] [2024-06-28 00:30:44,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:44,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:44,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:44,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:45,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:45,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 570 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:45,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:45,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:45,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:45,427 INFO L124 PetriNetUnfolderBase]: 191/349 cut-off events. [2024-06-28 00:30:45,428 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2024-06-28 00:30:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 349 events. 191/349 cut-off events. For 1710/1710 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1246 event pairs, 62 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1588. Up to 312 conditions per place. [2024-06-28 00:30:45,431 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 58 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-28 00:30:45,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 750 flow [2024-06-28 00:30:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 00:30:45,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922413793103448 [2024-06-28 00:30:45,433 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 570 flow. Second operand 8 states and 91 transitions. [2024-06-28 00:30:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 750 flow [2024-06-28 00:30:45,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 710 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:30:45,439 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 578 flow [2024-06-28 00:30:45,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-06-28 00:30:45,440 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 49 predicate places. [2024-06-28 00:30:45,440 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 578 flow [2024-06-28 00:30:45,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:45,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:45,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:45,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:30:45,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:45,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 508805984, now seen corresponding path program 5 times [2024-06-28 00:30:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:45,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28012099] [2024-06-28 00:30:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:47,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:47,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28012099] [2024-06-28 00:30:47,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28012099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:47,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301527897] [2024-06-28 00:30:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:47,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:47,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:47,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:47,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:47,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:47,806 INFO L124 PetriNetUnfolderBase]: 209/379 cut-off events. [2024-06-28 00:30:47,820 INFO L125 PetriNetUnfolderBase]: For 2207/2207 co-relation queries the response was YES. [2024-06-28 00:30:47,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 379 events. 209/379 cut-off events. For 2207/2207 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1406 event pairs, 69 based on Foata normal form. 3/381 useless extension candidates. Maximal degree in co-relation 1745. Up to 328 conditions per place. [2024-06-28 00:30:47,823 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 65 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-06-28 00:30:47,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 853 flow [2024-06-28 00:30:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 00:30:47,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236453201970443 [2024-06-28 00:30:47,824 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 578 flow. Second operand 7 states and 86 transitions. [2024-06-28 00:30:47,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 853 flow [2024-06-28 00:30:47,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 798 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:30:47,830 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 637 flow [2024-06-28 00:30:47,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-06-28 00:30:47,831 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 50 predicate places. [2024-06-28 00:30:47,833 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 637 flow [2024-06-28 00:30:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:47,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:47,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:30:47,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1372322144, now seen corresponding path program 6 times [2024-06-28 00:30:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124845763] [2024-06-28 00:30:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124845763] [2024-06-28 00:30:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124845763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034090357] [2024-06-28 00:30:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:49,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:49,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:49,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:49,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:49,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:49,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:49,885 INFO L124 PetriNetUnfolderBase]: 203/370 cut-off events. [2024-06-28 00:30:49,885 INFO L125 PetriNetUnfolderBase]: For 2281/2281 co-relation queries the response was YES. [2024-06-28 00:30:49,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 370 events. 203/370 cut-off events. For 2281/2281 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1363 event pairs, 69 based on Foata normal form. 3/372 useless extension candidates. Maximal degree in co-relation 1703. Up to 333 conditions per place. [2024-06-28 00:30:49,890 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 67 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-28 00:30:49,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 835 flow [2024-06-28 00:30:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:30:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:30:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:30:49,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2024-06-28 00:30:49,891 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 637 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:30:49,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 835 flow [2024-06-28 00:30:49,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 787 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:49,903 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 624 flow [2024-06-28 00:30:49,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-06-28 00:30:49,903 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 52 predicate places. [2024-06-28 00:30:49,903 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 624 flow [2024-06-28 00:30:49,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:49,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:49,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:30:49,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:49,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash -217883858, now seen corresponding path program 1 times [2024-06-28 00:30:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507891017] [2024-06-28 00:30:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507891017] [2024-06-28 00:30:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507891017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:53,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:53,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274785621] [2024-06-28 00:30:53,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:53,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:53,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:53,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:53,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:53,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:53,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:53,915 INFO L124 PetriNetUnfolderBase]: 205/375 cut-off events. [2024-06-28 00:30:53,916 INFO L125 PetriNetUnfolderBase]: For 2497/2497 co-relation queries the response was YES. [2024-06-28 00:30:53,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 375 events. 205/375 cut-off events. For 2497/2497 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1383 event pairs, 71 based on Foata normal form. 5/379 useless extension candidates. Maximal degree in co-relation 1692. Up to 336 conditions per place. [2024-06-28 00:30:53,919 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 67 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2024-06-28 00:30:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 834 flow [2024-06-28 00:30:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 00:30:53,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:30:53,920 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 624 flow. Second operand 8 states and 87 transitions. [2024-06-28 00:30:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 834 flow [2024-06-28 00:30:53,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 794 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:53,927 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 666 flow [2024-06-28 00:30:53,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-06-28 00:30:53,928 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-28 00:30:53,928 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 666 flow [2024-06-28 00:30:53,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:53,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:53,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:53,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:30:53,929 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:53,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2066194157, now seen corresponding path program 1 times [2024-06-28 00:30:53,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392865042] [2024-06-28 00:30:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:55,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392865042] [2024-06-28 00:30:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392865042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:55,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:30:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740022983] [2024-06-28 00:30:55,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:55,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:30:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:30:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:30:55,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:55,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 666 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:55,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:55,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:55,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:55,741 INFO L124 PetriNetUnfolderBase]: 212/388 cut-off events. [2024-06-28 00:30:55,741 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-06-28 00:30:55,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 388 events. 212/388 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1442 event pairs, 49 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1823. Up to 282 conditions per place. [2024-06-28 00:30:55,744 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 30 changer transitions 0/98 dead transitions. [2024-06-28 00:30:55,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 956 flow [2024-06-28 00:30:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:30:55,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-28 00:30:55,746 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 666 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:30:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 956 flow [2024-06-28 00:30:55,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 921 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:55,753 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 767 flow [2024-06-28 00:30:55,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2024-06-28 00:30:55,754 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-28 00:30:55,754 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 767 flow [2024-06-28 00:30:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:55,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:55,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:30:55,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:55,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash -255337853, now seen corresponding path program 2 times [2024-06-28 00:30:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698637811] [2024-06-28 00:30:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:57,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:57,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698637811] [2024-06-28 00:30:57,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698637811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:57,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:57,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:57,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035633420] [2024-06-28 00:30:57,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:57,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:57,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:57,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:57,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:57,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 767 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:57,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:57,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:57,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:57,548 INFO L124 PetriNetUnfolderBase]: 224/408 cut-off events. [2024-06-28 00:30:57,548 INFO L125 PetriNetUnfolderBase]: For 3109/3109 co-relation queries the response was YES. [2024-06-28 00:30:57,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 408 events. 224/408 cut-off events. For 3109/3109 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1562 event pairs, 53 based on Foata normal form. 1/408 useless extension candidates. Maximal degree in co-relation 2062. Up to 326 conditions per place. [2024-06-28 00:30:57,551 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 70 selfloop transitions, 34 changer transitions 0/106 dead transitions. [2024-06-28 00:30:57,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 1090 flow [2024-06-28 00:30:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:30:57,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-28 00:30:57,553 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 767 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:30:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 1090 flow [2024-06-28 00:30:57,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 1045 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:57,562 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 858 flow [2024-06-28 00:30:57,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-06-28 00:30:57,563 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 66 predicate places. [2024-06-28 00:30:57,563 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 858 flow [2024-06-28 00:30:57,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:57,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:57,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:57,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:30:57,564 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:57,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash -227628348, now seen corresponding path program 1 times [2024-06-28 00:30:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398497781] [2024-06-28 00:30:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:58,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398497781] [2024-06-28 00:30:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398497781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:30:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283803937] [2024-06-28 00:30:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:58,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:30:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:30:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:30:58,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:30:58,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 858 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:58,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:58,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:30:58,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:59,285 INFO L124 PetriNetUnfolderBase]: 235/426 cut-off events. [2024-06-28 00:30:59,285 INFO L125 PetriNetUnfolderBase]: For 3360/3360 co-relation queries the response was YES. [2024-06-28 00:30:59,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 426 events. 235/426 cut-off events. For 3360/3360 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1637 event pairs, 52 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 2228. Up to 281 conditions per place. [2024-06-28 00:30:59,289 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 67 selfloop transitions, 43 changer transitions 0/112 dead transitions. [2024-06-28 00:30:59,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 112 transitions, 1196 flow [2024-06-28 00:30:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:30:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:30:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:30:59,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2024-06-28 00:30:59,290 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 858 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:30:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 112 transitions, 1196 flow [2024-06-28 00:30:59,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 1150 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:30:59,299 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 943 flow [2024-06-28 00:30:59,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=943, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2024-06-28 00:30:59,300 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 71 predicate places. [2024-06-28 00:30:59,300 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 943 flow [2024-06-28 00:30:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:59,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:59,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:30:59,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:30:59,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash -255334133, now seen corresponding path program 3 times [2024-06-28 00:30:59,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496466714] [2024-06-28 00:30:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496466714] [2024-06-28 00:31:00,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496466714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:00,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516721241] [2024-06-28 00:31:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:00,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:00,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 943 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:00,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:00,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:00,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:00,850 INFO L124 PetriNetUnfolderBase]: 236/428 cut-off events. [2024-06-28 00:31:00,851 INFO L125 PetriNetUnfolderBase]: For 3765/3765 co-relation queries the response was YES. [2024-06-28 00:31:00,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 428 events. 236/428 cut-off events. For 3765/3765 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1650 event pairs, 53 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2349. Up to 350 conditions per place. [2024-06-28 00:31:00,854 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 71 selfloop transitions, 36 changer transitions 0/109 dead transitions. [2024-06-28 00:31:00,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 1214 flow [2024-06-28 00:31:00,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:31:00,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-28 00:31:00,856 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 943 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:31:00,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 1214 flow [2024-06-28 00:31:00,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 1167 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:00,866 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 1010 flow [2024-06-28 00:31:00,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1010, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-06-28 00:31:00,867 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2024-06-28 00:31:00,867 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 1010 flow [2024-06-28 00:31:00,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:00,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:00,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:31:00,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:00,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash 713803611, now seen corresponding path program 4 times [2024-06-28 00:31:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970978003] [2024-06-28 00:31:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:02,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970978003] [2024-06-28 00:31:02,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970978003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:02,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:02,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403035188] [2024-06-28 00:31:02,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:02,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:02,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:02,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 1010 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:02,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:02,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:02,589 INFO L124 PetriNetUnfolderBase]: 239/433 cut-off events. [2024-06-28 00:31:02,589 INFO L125 PetriNetUnfolderBase]: For 3967/3967 co-relation queries the response was YES. [2024-06-28 00:31:02,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 433 events. 239/433 cut-off events. For 3967/3967 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1671 event pairs, 50 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2442. Up to 319 conditions per place. [2024-06-28 00:31:02,592 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 65 selfloop transitions, 47 changer transitions 0/114 dead transitions. [2024-06-28 00:31:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 114 transitions, 1324 flow [2024-06-28 00:31:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 00:31:02,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46120689655172414 [2024-06-28 00:31:02,594 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 1010 flow. Second operand 8 states and 107 transitions. [2024-06-28 00:31:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 114 transitions, 1324 flow [2024-06-28 00:31:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 1280 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:02,604 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 1093 flow [2024-06-28 00:31:02,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1093, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-06-28 00:31:02,605 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2024-06-28 00:31:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 1093 flow [2024-06-28 00:31:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:02,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:02,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:31:02,606 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:02,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 713893976, now seen corresponding path program 2 times [2024-06-28 00:31:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38824498] [2024-06-28 00:31:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:03,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38824498] [2024-06-28 00:31:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38824498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:03,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109784854] [2024-06-28 00:31:03,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:03,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:03,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:03,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:03,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:03,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:03,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:03,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:04,321 INFO L124 PetriNetUnfolderBase]: 258/464 cut-off events. [2024-06-28 00:31:04,321 INFO L125 PetriNetUnfolderBase]: For 4883/4883 co-relation queries the response was YES. [2024-06-28 00:31:04,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 464 events. 258/464 cut-off events. For 4883/4883 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1831 event pairs, 57 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2712. Up to 305 conditions per place. [2024-06-28 00:31:04,325 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 80 selfloop transitions, 42 changer transitions 0/124 dead transitions. [2024-06-28 00:31:04,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 1527 flow [2024-06-28 00:31:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 00:31:04,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44061302681992337 [2024-06-28 00:31:04,326 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 1093 flow. Second operand 9 states and 115 transitions. [2024-06-28 00:31:04,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 1527 flow [2024-06-28 00:31:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 124 transitions, 1443 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:04,339 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 1176 flow [2024-06-28 00:31:04,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1176, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2024-06-28 00:31:04,340 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-28 00:31:04,340 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 1176 flow [2024-06-28 00:31:04,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:04,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:04,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:31:04,341 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:04,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -873839118, now seen corresponding path program 3 times [2024-06-28 00:31:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:04,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565544526] [2024-06-28 00:31:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565544526] [2024-06-28 00:31:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565544526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141019245] [2024-06-28 00:31:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:05,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:05,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:05,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 1176 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:05,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:05,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:05,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:06,160 INFO L124 PetriNetUnfolderBase]: 264/474 cut-off events. [2024-06-28 00:31:06,160 INFO L125 PetriNetUnfolderBase]: For 5034/5034 co-relation queries the response was YES. [2024-06-28 00:31:06,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 474 events. 264/474 cut-off events. For 5034/5034 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1889 event pairs, 59 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2808. Up to 391 conditions per place. [2024-06-28 00:31:06,165 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 93 selfloop transitions, 31 changer transitions 0/126 dead transitions. [2024-06-28 00:31:06,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 126 transitions, 1542 flow [2024-06-28 00:31:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:31:06,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39184952978056425 [2024-06-28 00:31:06,167 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 1176 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:31:06,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 126 transitions, 1542 flow [2024-06-28 00:31:06,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 1475 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:06,181 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 1202 flow [2024-06-28 00:31:06,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1202, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-06-28 00:31:06,181 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 89 predicate places. [2024-06-28 00:31:06,181 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 1202 flow [2024-06-28 00:31:06,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:06,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:06,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:06,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:31:06,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:06,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1732719228, now seen corresponding path program 4 times [2024-06-28 00:31:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:06,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816002378] [2024-06-28 00:31:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816002378] [2024-06-28 00:31:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816002378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:07,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552163860] [2024-06-28 00:31:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:07,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:07,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 1202 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:07,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:07,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:07,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:08,014 INFO L124 PetriNetUnfolderBase]: 260/468 cut-off events. [2024-06-28 00:31:08,014 INFO L125 PetriNetUnfolderBase]: For 5224/5224 co-relation queries the response was YES. [2024-06-28 00:31:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 468 events. 260/468 cut-off events. For 5224/5224 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1856 event pairs, 58 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2720. Up to 388 conditions per place. [2024-06-28 00:31:08,019 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 91 selfloop transitions, 30 changer transitions 0/123 dead transitions. [2024-06-28 00:31:08,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 123 transitions, 1496 flow [2024-06-28 00:31:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:31:08,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 00:31:08,020 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 1202 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:31:08,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 123 transitions, 1496 flow [2024-06-28 00:31:08,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 123 transitions, 1390 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:31:08,037 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1161 flow [2024-06-28 00:31:08,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-06-28 00:31:08,037 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-06-28 00:31:08,037 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1161 flow [2024-06-28 00:31:08,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:08,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:08,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:08,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:31:08,038 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:08,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -901550483, now seen corresponding path program 5 times [2024-06-28 00:31:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090594361] [2024-06-28 00:31:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090594361] [2024-06-28 00:31:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090594361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:09,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:09,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778502305] [2024-06-28 00:31:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:09,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:09,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:09,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1161 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:09,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:09,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:09,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:09,838 INFO L124 PetriNetUnfolderBase]: 269/483 cut-off events. [2024-06-28 00:31:09,838 INFO L125 PetriNetUnfolderBase]: For 5731/5731 co-relation queries the response was YES. [2024-06-28 00:31:09,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 483 events. 269/483 cut-off events. For 5731/5731 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1947 event pairs, 58 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 2759. Up to 369 conditions per place. [2024-06-28 00:31:09,843 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 89 selfloop transitions, 36 changer transitions 0/127 dead transitions. [2024-06-28 00:31:09,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 127 transitions, 1516 flow [2024-06-28 00:31:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 00:31:09,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46120689655172414 [2024-06-28 00:31:09,845 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1161 flow. Second operand 8 states and 107 transitions. [2024-06-28 00:31:09,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 127 transitions, 1516 flow [2024-06-28 00:31:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 1456 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:09,859 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 1230 flow [2024-06-28 00:31:09,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1230, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-06-28 00:31:09,860 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-06-28 00:31:09,860 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 1230 flow [2024-06-28 00:31:09,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:09,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:09,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:09,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:31:09,861 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:09,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1239199477, now seen corresponding path program 6 times [2024-06-28 00:31:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704114068] [2024-06-28 00:31:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704114068] [2024-06-28 00:31:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704114068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:11,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:11,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655210034] [2024-06-28 00:31:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:11,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:11,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:11,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:11,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:11,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:11,381 INFO L124 PetriNetUnfolderBase]: 271/487 cut-off events. [2024-06-28 00:31:11,381 INFO L125 PetriNetUnfolderBase]: For 5655/5655 co-relation queries the response was YES. [2024-06-28 00:31:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 487 events. 271/487 cut-off events. For 5655/5655 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1976 event pairs, 87 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2840. Up to 447 conditions per place. [2024-06-28 00:31:11,386 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 104 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-28 00:31:11,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 125 transitions, 1546 flow [2024-06-28 00:31:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:31:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:31:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 00:31:11,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 00:31:11,388 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 1230 flow. Second operand 7 states and 84 transitions. [2024-06-28 00:31:11,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 125 transitions, 1546 flow [2024-06-28 00:31:11,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 125 transitions, 1480 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:11,404 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1274 flow [2024-06-28 00:31:11,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1274, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2024-06-28 00:31:11,404 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 92 predicate places. [2024-06-28 00:31:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1274 flow [2024-06-28 00:31:11,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:11,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:11,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:11,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:31:11,405 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:11,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1715005596, now seen corresponding path program 5 times [2024-06-28 00:31:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:11,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412821541] [2024-06-28 00:31:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:11,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412821541] [2024-06-28 00:31:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412821541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:12,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:12,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346653765] [2024-06-28 00:31:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:12,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:12,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:12,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:12,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 1274 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:12,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:12,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:12,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:12,955 INFO L124 PetriNetUnfolderBase]: 265/478 cut-off events. [2024-06-28 00:31:12,955 INFO L125 PetriNetUnfolderBase]: For 5870/5870 co-relation queries the response was YES. [2024-06-28 00:31:12,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 478 events. 265/478 cut-off events. For 5870/5870 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1931 event pairs, 84 based on Foata normal form. 3/480 useless extension candidates. Maximal degree in co-relation 2752. Up to 436 conditions per place. [2024-06-28 00:31:12,959 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 104 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-28 00:31:12,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 1560 flow [2024-06-28 00:31:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 00:31:12,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:31:12,961 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1274 flow. Second operand 8 states and 87 transitions. [2024-06-28 00:31:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 1560 flow [2024-06-28 00:31:12,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 1498 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:12,976 INFO L231 Difference]: Finished difference. Result has 123 places, 118 transitions, 1283 flow [2024-06-28 00:31:12,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2024-06-28 00:31:12,977 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 95 predicate places. [2024-06-28 00:31:12,977 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 1283 flow [2024-06-28 00:31:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:12,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:12,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:12,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:31:12,978 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:12,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1486130521, now seen corresponding path program 1 times [2024-06-28 00:31:12,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:12,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447386679] [2024-06-28 00:31:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:14,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447386679] [2024-06-28 00:31:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447386679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:14,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:14,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:31:14,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278918496] [2024-06-28 00:31:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:14,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:31:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:31:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:31:14,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:31:14,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 1283 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:14,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:14,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:31:14,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:14,441 INFO L124 PetriNetUnfolderBase]: 254/477 cut-off events. [2024-06-28 00:31:14,441 INFO L125 PetriNetUnfolderBase]: For 6108/6108 co-relation queries the response was YES. [2024-06-28 00:31:14,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 477 events. 254/477 cut-off events. For 6108/6108 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2036 event pairs, 20 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2677. Up to 245 conditions per place. [2024-06-28 00:31:14,446 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 64 selfloop transitions, 38 changer transitions 0/134 dead transitions. [2024-06-28 00:31:14,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 1575 flow [2024-06-28 00:31:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:31:14,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2024-06-28 00:31:14,447 INFO L175 Difference]: Start difference. First operand has 123 places, 118 transitions, 1283 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:31:14,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 1575 flow [2024-06-28 00:31:14,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 1512 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:14,463 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 1324 flow [2024-06-28 00:31:14,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1324, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2024-06-28 00:31:14,463 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 98 predicate places. [2024-06-28 00:31:14,464 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 1324 flow [2024-06-28 00:31:14,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:14,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:14,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:14,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:31:14,464 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:14,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:14,465 INFO L85 PathProgramCache]: Analyzing trace with hash -400195041, now seen corresponding path program 1 times [2024-06-28 00:31:14,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:14,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169806348] [2024-06-28 00:31:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:14,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:16,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:16,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169806348] [2024-06-28 00:31:16,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169806348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:16,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926631973] [2024-06-28 00:31:16,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:16,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:16,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:16,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 1324 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:16,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:16,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:16,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:16,693 INFO L124 PetriNetUnfolderBase]: 280/507 cut-off events. [2024-06-28 00:31:16,693 INFO L125 PetriNetUnfolderBase]: For 6652/6652 co-relation queries the response was YES. [2024-06-28 00:31:16,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 507 events. 280/507 cut-off events. For 6652/6652 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2115 event pairs, 50 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 2902. Up to 383 conditions per place. [2024-06-28 00:31:16,697 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 84 selfloop transitions, 53 changer transitions 0/139 dead transitions. [2024-06-28 00:31:16,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 1668 flow [2024-06-28 00:31:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:31:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:31:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:31:16,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 00:31:16,698 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 1324 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:31:16,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 1668 flow [2024-06-28 00:31:16,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 139 transitions, 1616 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:16,714 INFO L231 Difference]: Finished difference. Result has 130 places, 122 transitions, 1409 flow [2024-06-28 00:31:16,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1409, PETRI_PLACES=130, PETRI_TRANSITIONS=122} [2024-06-28 00:31:16,714 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2024-06-28 00:31:16,714 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 122 transitions, 1409 flow [2024-06-28 00:31:16,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:16,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:16,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:31:16,715 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:16,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 671720547, now seen corresponding path program 2 times [2024-06-28 00:31:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514438129] [2024-06-28 00:31:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514438129] [2024-06-28 00:31:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514438129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:18,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456792922] [2024-06-28 00:31:18,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:18,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:18,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:18,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:18,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:18,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 122 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:18,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:18,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:18,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:18,497 INFO L124 PetriNetUnfolderBase]: 288/523 cut-off events. [2024-06-28 00:31:18,497 INFO L125 PetriNetUnfolderBase]: For 6792/6792 co-relation queries the response was YES. [2024-06-28 00:31:18,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 523 events. 288/523 cut-off events. For 6792/6792 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2226 event pairs, 33 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3032. Up to 330 conditions per place. [2024-06-28 00:31:18,501 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 84 selfloop transitions, 55 changer transitions 0/141 dead transitions. [2024-06-28 00:31:18,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 1790 flow [2024-06-28 00:31:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:31:18,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:31:18,502 INFO L175 Difference]: Start difference. First operand has 130 places, 122 transitions, 1409 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:31:18,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 1790 flow [2024-06-28 00:31:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 1657 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:18,549 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 1407 flow [2024-06-28 00:31:18,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-06-28 00:31:18,550 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-06-28 00:31:18,550 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 1407 flow [2024-06-28 00:31:18,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:18,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:18,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:31:18,551 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:18,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 671780997, now seen corresponding path program 3 times [2024-06-28 00:31:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:18,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804912198] [2024-06-28 00:31:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804912198] [2024-06-28 00:31:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804912198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:19,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:19,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865207343] [2024-06-28 00:31:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:19,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:20,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:20,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 1407 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:20,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:20,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:20,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:20,280 INFO L124 PetriNetUnfolderBase]: 292/531 cut-off events. [2024-06-28 00:31:20,280 INFO L125 PetriNetUnfolderBase]: For 7215/7215 co-relation queries the response was YES. [2024-06-28 00:31:20,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 531 events. 292/531 cut-off events. For 7215/7215 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2271 event pairs, 54 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3082. Up to 399 conditions per place. [2024-06-28 00:31:20,284 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 83 selfloop transitions, 55 changer transitions 0/140 dead transitions. [2024-06-28 00:31:20,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 140 transitions, 1730 flow [2024-06-28 00:31:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:31:20,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:31:20,285 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 1407 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:31:20,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 140 transitions, 1730 flow [2024-06-28 00:31:20,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 140 transitions, 1618 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:20,299 INFO L231 Difference]: Finished difference. Result has 134 places, 125 transitions, 1423 flow [2024-06-28 00:31:20,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1423, PETRI_PLACES=134, PETRI_TRANSITIONS=125} [2024-06-28 00:31:20,300 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2024-06-28 00:31:20,300 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 125 transitions, 1423 flow [2024-06-28 00:31:20,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:20,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:20,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:20,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:31:20,301 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:20,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 671781121, now seen corresponding path program 2 times [2024-06-28 00:31:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180149542] [2024-06-28 00:31:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180149542] [2024-06-28 00:31:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180149542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:21,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:21,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:21,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749824775] [2024-06-28 00:31:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:21,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:21,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 125 transitions, 1423 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:22,259 INFO L124 PetriNetUnfolderBase]: 303/549 cut-off events. [2024-06-28 00:31:22,259 INFO L125 PetriNetUnfolderBase]: For 8026/8026 co-relation queries the response was YES. [2024-06-28 00:31:22,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 549 events. 303/549 cut-off events. For 8026/8026 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2365 event pairs, 47 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3220. Up to 279 conditions per place. [2024-06-28 00:31:22,263 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 72 selfloop transitions, 74 changer transitions 0/148 dead transitions. [2024-06-28 00:31:22,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 148 transitions, 1879 flow [2024-06-28 00:31:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:31:22,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789272030651341 [2024-06-28 00:31:22,265 INFO L175 Difference]: Start difference. First operand has 134 places, 125 transitions, 1423 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:31:22,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 148 transitions, 1879 flow [2024-06-28 00:31:22,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 148 transitions, 1751 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:22,281 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 1508 flow [2024-06-28 00:31:22,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1508, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2024-06-28 00:31:22,286 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 107 predicate places. [2024-06-28 00:31:22,286 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 1508 flow [2024-06-28 00:31:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:22,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:22,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:31:22,286 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:22,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1533456811, now seen corresponding path program 3 times [2024-06-28 00:31:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437442390] [2024-06-28 00:31:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:23,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437442390] [2024-06-28 00:31:23,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437442390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:23,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:23,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:23,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570686577] [2024-06-28 00:31:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:23,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:23,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:23,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:23,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 129 transitions, 1508 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:23,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:23,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:23,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:24,251 INFO L124 PetriNetUnfolderBase]: 309/559 cut-off events. [2024-06-28 00:31:24,251 INFO L125 PetriNetUnfolderBase]: For 8876/8876 co-relation queries the response was YES. [2024-06-28 00:31:24,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3412 conditions, 559 events. 309/559 cut-off events. For 8876/8876 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2413 event pairs, 52 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3353. Up to 386 conditions per place. [2024-06-28 00:31:24,255 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 89 selfloop transitions, 56 changer transitions 0/147 dead transitions. [2024-06-28 00:31:24,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 147 transitions, 1882 flow [2024-06-28 00:31:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:31:24,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559386973180077 [2024-06-28 00:31:24,256 INFO L175 Difference]: Start difference. First operand has 135 places, 129 transitions, 1508 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:31:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 147 transitions, 1882 flow [2024-06-28 00:31:24,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 147 transitions, 1786 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:24,276 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 1565 flow [2024-06-28 00:31:24,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1565, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2024-06-28 00:31:24,277 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2024-06-28 00:31:24,277 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 1565 flow [2024-06-28 00:31:24,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:24,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:24,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:24,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:31:24,278 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:24,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash 674577631, now seen corresponding path program 4 times [2024-06-28 00:31:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831012782] [2024-06-28 00:31:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:24,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:25,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831012782] [2024-06-28 00:31:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831012782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:25,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818648033] [2024-06-28 00:31:25,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:25,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:25,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:25,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:25,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:25,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:25,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:26,244 INFO L124 PetriNetUnfolderBase]: 315/569 cut-off events. [2024-06-28 00:31:26,244 INFO L125 PetriNetUnfolderBase]: For 9517/9517 co-relation queries the response was YES. [2024-06-28 00:31:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 569 events. 315/569 cut-off events. For 9517/9517 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2466 event pairs, 53 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3506. Up to 371 conditions per place. [2024-06-28 00:31:26,248 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 84 selfloop transitions, 64 changer transitions 0/150 dead transitions. [2024-06-28 00:31:26,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 150 transitions, 1953 flow [2024-06-28 00:31:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-28 00:31:26,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-06-28 00:31:26,249 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 1565 flow. Second operand 9 states and 123 transitions. [2024-06-28 00:31:26,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 150 transitions, 1953 flow [2024-06-28 00:31:26,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 150 transitions, 1866 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:26,271 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 1648 flow [2024-06-28 00:31:26,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2024-06-28 00:31:26,272 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2024-06-28 00:31:26,272 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 1648 flow [2024-06-28 00:31:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:26,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:26,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:26,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:31:26,272 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:26,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:26,273 INFO L85 PathProgramCache]: Analyzing trace with hash 674577507, now seen corresponding path program 4 times [2024-06-28 00:31:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:26,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937575807] [2024-06-28 00:31:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:26,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937575807] [2024-06-28 00:31:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937575807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:27,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466230585] [2024-06-28 00:31:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:27,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:27,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 133 transitions, 1648 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:31:27,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:27,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:27,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:28,030 INFO L124 PetriNetUnfolderBase]: 335/613 cut-off events. [2024-06-28 00:31:28,030 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-06-28 00:31:28,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 613 events. 335/613 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2737 event pairs, 56 based on Foata normal form. 12/624 useless extension candidates. Maximal degree in co-relation 3724. Up to 382 conditions per place. [2024-06-28 00:31:28,034 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 90 selfloop transitions, 53 changer transitions 10/155 dead transitions. [2024-06-28 00:31:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 155 transitions, 2052 flow [2024-06-28 00:31:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:31:28,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789272030651341 [2024-06-28 00:31:28,036 INFO L175 Difference]: Start difference. First operand has 143 places, 133 transitions, 1648 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:31:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 155 transitions, 2052 flow [2024-06-28 00:31:28,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 155 transitions, 1906 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:28,066 INFO L231 Difference]: Finished difference. Result has 145 places, 129 transitions, 1577 flow [2024-06-28 00:31:28,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1577, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2024-06-28 00:31:28,067 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 117 predicate places. [2024-06-28 00:31:28,067 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 1577 flow [2024-06-28 00:31:28,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:31:28,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:28,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:28,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:31:28,068 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:28,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1626470833, now seen corresponding path program 5 times [2024-06-28 00:31:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:28,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95372304] [2024-06-28 00:31:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95372304] [2024-06-28 00:31:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95372304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:29,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:29,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336556945] [2024-06-28 00:31:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:29,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:29,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 1577 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:31:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:29,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:29,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:29,772 INFO L124 PetriNetUnfolderBase]: 305/563 cut-off events. [2024-06-28 00:31:29,773 INFO L125 PetriNetUnfolderBase]: For 10716/10716 co-relation queries the response was YES. [2024-06-28 00:31:29,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 563 events. 305/563 cut-off events. For 10716/10716 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2498 event pairs, 75 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 3481. Up to 510 conditions per place. [2024-06-28 00:31:29,776 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 115 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-28 00:31:29,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 1889 flow [2024-06-28 00:31:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:31:29,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 00:31:29,777 INFO L175 Difference]: Start difference. First operand has 145 places, 129 transitions, 1577 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:31:29,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 1889 flow [2024-06-28 00:31:29,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 1778 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:29,802 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 1528 flow [2024-06-28 00:31:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1528, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2024-06-28 00:31:29,803 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 117 predicate places. [2024-06-28 00:31:29,803 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 1528 flow [2024-06-28 00:31:29,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:31:29,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:29,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:31:29,803 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:29,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash 771164303, now seen corresponding path program 5 times [2024-06-28 00:31:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:29,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875464345] [2024-06-28 00:31:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:31,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:31,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875464345] [2024-06-28 00:31:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875464345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:31,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:31,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130721893] [2024-06-28 00:31:31,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:31,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:31,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:31,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:31:31,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:31,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:31,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:31:31,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:31,808 INFO L124 PetriNetUnfolderBase]: 311/573 cut-off events. [2024-06-28 00:31:31,808 INFO L125 PetriNetUnfolderBase]: For 10432/10432 co-relation queries the response was YES. [2024-06-28 00:31:31,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 573 events. 311/573 cut-off events. For 10432/10432 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2569 event pairs, 71 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3469. Up to 453 conditions per place. [2024-06-28 00:31:31,813 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 107 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-06-28 00:31:31,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 147 transitions, 1904 flow [2024-06-28 00:31:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:31:31,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521072796934866 [2024-06-28 00:31:31,818 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 1528 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:31:31,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 147 transitions, 1904 flow [2024-06-28 00:31:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 1809 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:31,847 INFO L231 Difference]: Finished difference. Result has 146 places, 132 transitions, 1550 flow [2024-06-28 00:31:31,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2024-06-28 00:31:31,848 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2024-06-28 00:31:31,848 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 1550 flow [2024-06-28 00:31:31,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:31,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:31,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:31:31,849 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:31,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash 771348877, now seen corresponding path program 1 times [2024-06-28 00:31:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175543326] [2024-06-28 00:31:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:33,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175543326] [2024-06-28 00:31:33,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175543326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:33,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:33,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:33,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481549259] [2024-06-28 00:31:33,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:33,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:33,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:33,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:33,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:33,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:33,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:34,321 INFO L124 PetriNetUnfolderBase]: 315/581 cut-off events. [2024-06-28 00:31:34,336 INFO L125 PetriNetUnfolderBase]: For 11168/11168 co-relation queries the response was YES. [2024-06-28 00:31:34,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3578 conditions, 581 events. 315/581 cut-off events. For 11168/11168 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2622 event pairs, 74 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3516. Up to 512 conditions per place. [2024-06-28 00:31:34,340 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 120 selfloop transitions, 25 changer transitions 0/147 dead transitions. [2024-06-28 00:31:34,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 147 transitions, 1888 flow [2024-06-28 00:31:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:31:34,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-06-28 00:31:34,342 INFO L175 Difference]: Start difference. First operand has 146 places, 132 transitions, 1550 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:31:34,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 147 transitions, 1888 flow [2024-06-28 00:31:34,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 147 transitions, 1793 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:31:34,385 INFO L231 Difference]: Finished difference. Result has 147 places, 133 transitions, 1517 flow [2024-06-28 00:31:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1517, PETRI_PLACES=147, PETRI_TRANSITIONS=133} [2024-06-28 00:31:34,390 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 00:31:34,404 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 133 transitions, 1517 flow [2024-06-28 00:31:34,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:34,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:34,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:34,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:31:34,405 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:34,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1889098961, now seen corresponding path program 2 times [2024-06-28 00:31:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383173213] [2024-06-28 00:31:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383173213] [2024-06-28 00:31:36,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383173213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:36,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:36,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771363724] [2024-06-28 00:31:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:36,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:36,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:36,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:36,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 133 transitions, 1517 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2024-06-28 00:31:36,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:36,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:36,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:36,580 INFO L124 PetriNetUnfolderBase]: 319/589 cut-off events. [2024-06-28 00:31:36,580 INFO L125 PetriNetUnfolderBase]: For 11756/11756 co-relation queries the response was YES. [2024-06-28 00:31:36,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 589 events. 319/589 cut-off events. For 11756/11756 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2661 event pairs, 102 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 3510. Up to 535 conditions per place. [2024-06-28 00:31:36,584 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-06-28 00:31:36,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 145 transitions, 1845 flow [2024-06-28 00:31:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 00:31:36,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:31:36,604 INFO L175 Difference]: Start difference. First operand has 147 places, 133 transitions, 1517 flow. Second operand 9 states and 99 transitions. [2024-06-28 00:31:36,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 145 transitions, 1845 flow [2024-06-28 00:31:36,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1793 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:36,648 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1521 flow [2024-06-28 00:31:36,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1521, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-28 00:31:36,649 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:31:36,650 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1521 flow [2024-06-28 00:31:36,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2024-06-28 00:31:36,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:36,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:36,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:31:36,650 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:36,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1579475715, now seen corresponding path program 6 times [2024-06-28 00:31:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049723924] [2024-06-28 00:31:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049723924] [2024-06-28 00:31:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049723924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850600510] [2024-06-28 00:31:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:38,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:38,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:38,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1521 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:38,578 INFO L124 PetriNetUnfolderBase]: 321/595 cut-off events. [2024-06-28 00:31:38,578 INFO L125 PetriNetUnfolderBase]: For 11316/11316 co-relation queries the response was YES. [2024-06-28 00:31:38,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 595 events. 321/595 cut-off events. For 11316/11316 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2702 event pairs, 100 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3478. Up to 539 conditions per place. [2024-06-28 00:31:38,583 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 124 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-06-28 00:31:38,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 147 transitions, 1854 flow [2024-06-28 00:31:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:31:38,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-28 00:31:38,584 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1521 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:31:38,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 147 transitions, 1854 flow [2024-06-28 00:31:38,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1781 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:38,608 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1507 flow [2024-06-28 00:31:38,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1507, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-28 00:31:38,609 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2024-06-28 00:31:38,609 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1507 flow [2024-06-28 00:31:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:38,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:38,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:31:38,610 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:38,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash 239523039, now seen corresponding path program 6 times [2024-06-28 00:31:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538287111] [2024-06-28 00:31:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:40,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538287111] [2024-06-28 00:31:40,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538287111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:40,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37801490] [2024-06-28 00:31:40,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:40,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:40,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:40,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:40,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1507 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:40,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:40,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:40,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:40,477 INFO L124 PetriNetUnfolderBase]: 337/621 cut-off events. [2024-06-28 00:31:40,477 INFO L125 PetriNetUnfolderBase]: For 12997/12997 co-relation queries the response was YES. [2024-06-28 00:31:40,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 621 events. 337/621 cut-off events. For 12997/12997 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2837 event pairs, 104 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3724. Up to 544 conditions per place. [2024-06-28 00:31:40,481 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 119 selfloop transitions, 35 changer transitions 0/156 dead transitions. [2024-06-28 00:31:40,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 2038 flow [2024-06-28 00:31:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 00:31:40,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44396551724137934 [2024-06-28 00:31:40,482 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1507 flow. Second operand 8 states and 103 transitions. [2024-06-28 00:31:40,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 2038 flow [2024-06-28 00:31:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 156 transitions, 1973 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:40,510 INFO L231 Difference]: Finished difference. Result has 153 places, 143 transitions, 1668 flow [2024-06-28 00:31:40,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1668, PETRI_PLACES=153, PETRI_TRANSITIONS=143} [2024-06-28 00:31:40,510 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 00:31:40,510 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 143 transitions, 1668 flow [2024-06-28 00:31:40,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:40,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:40,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:31:40,511 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:40,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 245956779, now seen corresponding path program 7 times [2024-06-28 00:31:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602300603] [2024-06-28 00:31:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602300603] [2024-06-28 00:31:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602300603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:41,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:41,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318690754] [2024-06-28 00:31:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:42,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:42,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 143 transitions, 1668 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:42,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:42,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:42,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:42,338 INFO L124 PetriNetUnfolderBase]: 331/612 cut-off events. [2024-06-28 00:31:42,338 INFO L125 PetriNetUnfolderBase]: For 12772/12772 co-relation queries the response was YES. [2024-06-28 00:31:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 612 events. 331/612 cut-off events. For 12772/12772 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2803 event pairs, 102 based on Foata normal form. 3/614 useless extension candidates. Maximal degree in co-relation 3683. Up to 569 conditions per place. [2024-06-28 00:31:42,344 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 127 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-06-28 00:31:42,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 152 transitions, 1994 flow [2024-06-28 00:31:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 00:31:42,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:31:42,346 INFO L175 Difference]: Start difference. First operand has 153 places, 143 transitions, 1668 flow. Second operand 9 states and 99 transitions. [2024-06-28 00:31:42,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 152 transitions, 1994 flow [2024-06-28 00:31:42,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 152 transitions, 1901 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 00:31:42,376 INFO L231 Difference]: Finished difference. Result has 159 places, 143 transitions, 1629 flow [2024-06-28 00:31:42,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=159, PETRI_TRANSITIONS=143} [2024-06-28 00:31:42,377 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2024-06-28 00:31:42,377 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 143 transitions, 1629 flow [2024-06-28 00:31:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:42,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:42,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:42,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:31:42,377 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:42,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1579480489, now seen corresponding path program 8 times [2024-06-28 00:31:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:42,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880723016] [2024-06-28 00:31:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880723016] [2024-06-28 00:31:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880723016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220381701] [2024-06-28 00:31:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:43,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:43,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 143 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:43,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:43,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:43,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:44,266 INFO L124 PetriNetUnfolderBase]: 343/632 cut-off events. [2024-06-28 00:31:44,266 INFO L125 PetriNetUnfolderBase]: For 12699/12699 co-relation queries the response was YES. [2024-06-28 00:31:44,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 632 events. 343/632 cut-off events. For 12699/12699 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2907 event pairs, 101 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3785. Up to 555 conditions per place. [2024-06-28 00:31:44,270 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 129 selfloop transitions, 29 changer transitions 0/160 dead transitions. [2024-06-28 00:31:44,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 160 transitions, 2063 flow [2024-06-28 00:31:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:31:44,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 00:31:44,271 INFO L175 Difference]: Start difference. First operand has 159 places, 143 transitions, 1629 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:31:44,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 160 transitions, 2063 flow [2024-06-28 00:31:44,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 2003 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:31:44,302 INFO L231 Difference]: Finished difference. Result has 162 places, 147 transitions, 1698 flow [2024-06-28 00:31:44,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1698, PETRI_PLACES=162, PETRI_TRANSITIONS=147} [2024-06-28 00:31:44,303 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-06-28 00:31:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 147 transitions, 1698 flow [2024-06-28 00:31:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:44,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:44,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:31:44,304 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:44,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 239700669, now seen corresponding path program 9 times [2024-06-28 00:31:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162995221] [2024-06-28 00:31:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162995221] [2024-06-28 00:31:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162995221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627585574] [2024-06-28 00:31:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:45,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:45,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:45,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:45,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 147 transitions, 1698 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:45,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:45,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:45,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:46,119 INFO L124 PetriNetUnfolderBase]: 344/634 cut-off events. [2024-06-28 00:31:46,119 INFO L125 PetriNetUnfolderBase]: For 12934/12934 co-relation queries the response was YES. [2024-06-28 00:31:46,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 634 events. 344/634 cut-off events. For 12934/12934 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2924 event pairs, 100 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 3812. Up to 557 conditions per place. [2024-06-28 00:31:46,123 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 132 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2024-06-28 00:31:46,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 160 transitions, 2102 flow [2024-06-28 00:31:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:31:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:31:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:31:46,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 00:31:46,125 INFO L175 Difference]: Start difference. First operand has 162 places, 147 transitions, 1698 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:31:46,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 160 transitions, 2102 flow [2024-06-28 00:31:46,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 1939 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:46,159 INFO L231 Difference]: Finished difference. Result has 163 places, 149 transitions, 1640 flow [2024-06-28 00:31:46,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1640, PETRI_PLACES=163, PETRI_TRANSITIONS=149} [2024-06-28 00:31:46,159 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places. [2024-06-28 00:31:46,159 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 149 transitions, 1640 flow [2024-06-28 00:31:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:46,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:46,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:31:46,160 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:46,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 246837465, now seen corresponding path program 3 times [2024-06-28 00:31:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630353922] [2024-06-28 00:31:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:47,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630353922] [2024-06-28 00:31:47,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630353922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:47,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:47,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:31:47,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115422583] [2024-06-28 00:31:47,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:47,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:31:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:31:47,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:31:47,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:47,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 149 transitions, 1640 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2024-06-28 00:31:47,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:47,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:48,037 INFO L124 PetriNetUnfolderBase]: 348/642 cut-off events. [2024-06-28 00:31:48,037 INFO L125 PetriNetUnfolderBase]: For 13119/13119 co-relation queries the response was YES. [2024-06-28 00:31:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 642 events. 348/642 cut-off events. For 13119/13119 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2970 event pairs, 106 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 3766. Up to 582 conditions per place. [2024-06-28 00:31:48,042 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 135 selfloop transitions, 22 changer transitions 0/159 dead transitions. [2024-06-28 00:31:48,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 159 transitions, 1992 flow [2024-06-28 00:31:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:31:48,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-28 00:31:48,044 INFO L175 Difference]: Start difference. First operand has 163 places, 149 transitions, 1640 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:31:48,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 159 transitions, 1992 flow [2024-06-28 00:31:48,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 159 transitions, 1915 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:48,083 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1625 flow [2024-06-28 00:31:48,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1625, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2024-06-28 00:31:48,084 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2024-06-28 00:31:48,084 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1625 flow [2024-06-28 00:31:48,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2024-06-28 00:31:48,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:48,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:31:48,085 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:48,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1616987093, now seen corresponding path program 4 times [2024-06-28 00:31:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:48,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063758440] [2024-06-28 00:31:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:49,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:49,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063758440] [2024-06-28 00:31:49,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063758440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:49,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968533717] [2024-06-28 00:31:49,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:49,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:49,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:49,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 1625 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:49,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:49,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:49,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:49,867 INFO L124 PetriNetUnfolderBase]: 352/650 cut-off events. [2024-06-28 00:31:49,867 INFO L125 PetriNetUnfolderBase]: For 13572/13572 co-relation queries the response was YES. [2024-06-28 00:31:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 650 events. 352/650 cut-off events. For 13572/13572 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3000 event pairs, 105 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 3764. Up to 614 conditions per place. [2024-06-28 00:31:49,872 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 145 selfloop transitions, 12 changer transitions 0/159 dead transitions. [2024-06-28 00:31:49,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 159 transitions, 1969 flow [2024-06-28 00:31:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:31:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:31:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 00:31:49,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 00:31:49,873 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1625 flow. Second operand 8 states and 84 transitions. [2024-06-28 00:31:49,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 159 transitions, 1969 flow [2024-06-28 00:31:49,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 159 transitions, 1934 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:31:49,912 INFO L231 Difference]: Finished difference. Result has 170 places, 151 transitions, 1632 flow [2024-06-28 00:31:49,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1632, PETRI_PLACES=170, PETRI_TRANSITIONS=151} [2024-06-28 00:31:49,913 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2024-06-28 00:31:49,913 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 151 transitions, 1632 flow [2024-06-28 00:31:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:49,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:49,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:49,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:31:49,914 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:49,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1625557973, now seen corresponding path program 5 times [2024-06-28 00:31:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:49,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254200417] [2024-06-28 00:31:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:49,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254200417] [2024-06-28 00:31:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254200417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:51,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:51,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:31:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828930194] [2024-06-28 00:31:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:31:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:31:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:31:51,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:51,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 151 transitions, 1632 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:51,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:51,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:51,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:51,719 INFO L124 PetriNetUnfolderBase]: 349/645 cut-off events. [2024-06-28 00:31:51,720 INFO L125 PetriNetUnfolderBase]: For 12134/12134 co-relation queries the response was YES. [2024-06-28 00:31:51,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 645 events. 349/645 cut-off events. For 12134/12134 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2988 event pairs, 106 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3646. Up to 614 conditions per place. [2024-06-28 00:31:51,724 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 143 selfloop transitions, 13 changer transitions 0/158 dead transitions. [2024-06-28 00:31:51,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 158 transitions, 1960 flow [2024-06-28 00:31:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:31:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:31:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 00:31:51,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891625615763547 [2024-06-28 00:31:51,725 INFO L175 Difference]: Start difference. First operand has 170 places, 151 transitions, 1632 flow. Second operand 7 states and 79 transitions. [2024-06-28 00:31:51,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 158 transitions, 1960 flow [2024-06-28 00:31:51,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 158 transitions, 1932 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:31:51,766 INFO L231 Difference]: Finished difference. Result has 172 places, 151 transitions, 1634 flow [2024-06-28 00:31:51,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1634, PETRI_PLACES=172, PETRI_TRANSITIONS=151} [2024-06-28 00:31:51,767 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 00:31:51,767 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 151 transitions, 1634 flow [2024-06-28 00:31:51,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:51,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:51,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:51,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:31:51,768 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:51,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1174595267, now seen corresponding path program 1 times [2024-06-28 00:31:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:51,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373527665] [2024-06-28 00:31:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:51,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:53,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:53,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373527665] [2024-06-28 00:31:53,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373527665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:53,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:53,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:31:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596003412] [2024-06-28 00:31:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:53,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:31:53,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:31:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:31:53,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:53,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 151 transitions, 1634 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:53,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:53,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:53,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:54,168 INFO L124 PetriNetUnfolderBase]: 370/692 cut-off events. [2024-06-28 00:31:54,169 INFO L125 PetriNetUnfolderBase]: For 16946/16946 co-relation queries the response was YES. [2024-06-28 00:31:54,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 692 events. 370/692 cut-off events. For 16946/16946 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3313 event pairs, 37 based on Foata normal form. 8/699 useless extension candidates. Maximal degree in co-relation 3823. Up to 432 conditions per place. [2024-06-28 00:31:54,173 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 105 selfloop transitions, 56 changer transitions 14/177 dead transitions. [2024-06-28 00:31:54,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 2082 flow [2024-06-28 00:31:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:31:54,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981191222570533 [2024-06-28 00:31:54,174 INFO L175 Difference]: Start difference. First operand has 172 places, 151 transitions, 1634 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:31:54,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 2082 flow [2024-06-28 00:31:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 177 transitions, 2014 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:31:54,216 INFO L231 Difference]: Finished difference. Result has 176 places, 150 transitions, 1671 flow [2024-06-28 00:31:54,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1671, PETRI_PLACES=176, PETRI_TRANSITIONS=150} [2024-06-28 00:31:54,217 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 148 predicate places. [2024-06-28 00:31:54,217 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 150 transitions, 1671 flow [2024-06-28 00:31:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:54,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:54,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:54,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:31:54,217 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:54,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1280472015, now seen corresponding path program 2 times [2024-06-28 00:31:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:54,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659939] [2024-06-28 00:31:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:55,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:55,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659939] [2024-06-28 00:31:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570893093] [2024-06-28 00:31:55,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:55,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:56,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:56,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 150 transitions, 1671 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:56,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:56,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:56,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:56,548 INFO L124 PetriNetUnfolderBase]: 388/728 cut-off events. [2024-06-28 00:31:56,548 INFO L125 PetriNetUnfolderBase]: For 25336/25336 co-relation queries the response was YES. [2024-06-28 00:31:56,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4510 conditions, 728 events. 388/728 cut-off events. For 25336/25336 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3478 event pairs, 59 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 4435. Up to 481 conditions per place. [2024-06-28 00:31:56,554 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 116 selfloop transitions, 51 changer transitions 12/181 dead transitions. [2024-06-28 00:31:56,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 181 transitions, 2247 flow [2024-06-28 00:31:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:31:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:31:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 00:31:56,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:31:56,555 INFO L175 Difference]: Start difference. First operand has 176 places, 150 transitions, 1671 flow. Second operand 12 states and 145 transitions. [2024-06-28 00:31:56,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 181 transitions, 2247 flow [2024-06-28 00:31:56,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 2084 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:31:56,607 INFO L231 Difference]: Finished difference. Result has 174 places, 147 transitions, 1587 flow [2024-06-28 00:31:56,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1587, PETRI_PLACES=174, PETRI_TRANSITIONS=147} [2024-06-28 00:31:56,608 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2024-06-28 00:31:56,608 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 147 transitions, 1587 flow [2024-06-28 00:31:56,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:56,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:56,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:56,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:31:56,609 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:56,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1337727465, now seen corresponding path program 3 times [2024-06-28 00:31:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844511824] [2024-06-28 00:31:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:31:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:31:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:31:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844511824] [2024-06-28 00:31:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844511824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:31:58,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:31:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:31:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350326453] [2024-06-28 00:31:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:31:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:31:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:31:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:31:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:31:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:31:58,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 147 transitions, 1587 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:58,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:31:58,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:31:58,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:31:58,658 INFO L124 PetriNetUnfolderBase]: 376/706 cut-off events. [2024-06-28 00:31:58,659 INFO L125 PetriNetUnfolderBase]: For 25194/25194 co-relation queries the response was YES. [2024-06-28 00:31:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 706 events. 376/706 cut-off events. For 25194/25194 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3338 event pairs, 46 based on Foata normal form. 8/713 useless extension candidates. Maximal degree in co-relation 4250. Up to 308 conditions per place. [2024-06-28 00:31:58,663 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 83 selfloop transitions, 86 changer transitions 8/179 dead transitions. [2024-06-28 00:31:58,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 2257 flow [2024-06-28 00:31:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:31:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:31:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:31:58,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445141065830721 [2024-06-28 00:31:58,665 INFO L175 Difference]: Start difference. First operand has 174 places, 147 transitions, 1587 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:31:58,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 2257 flow [2024-06-28 00:31:58,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 179 transitions, 2140 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:31:58,715 INFO L231 Difference]: Finished difference. Result has 172 places, 145 transitions, 1632 flow [2024-06-28 00:31:58,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1632, PETRI_PLACES=172, PETRI_TRANSITIONS=145} [2024-06-28 00:31:58,716 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 00:31:58,716 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 145 transitions, 1632 flow [2024-06-28 00:31:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:31:58,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:31:58,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:31:58,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:31:58,717 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:31:58,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:31:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash 478856655, now seen corresponding path program 4 times [2024-06-28 00:31:58,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:31:58,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947522819] [2024-06-28 00:31:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:31:58,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:31:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:00,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947522819] [2024-06-28 00:32:00,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947522819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127634824] [2024-06-28 00:32:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:00,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:00,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:00,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 145 transitions, 1632 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:01,111 INFO L124 PetriNetUnfolderBase]: 354/660 cut-off events. [2024-06-28 00:32:01,111 INFO L125 PetriNetUnfolderBase]: For 19353/19353 co-relation queries the response was YES. [2024-06-28 00:32:01,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 660 events. 354/660 cut-off events. For 19353/19353 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3064 event pairs, 37 based on Foata normal form. 10/669 useless extension candidates. Maximal degree in co-relation 3801. Up to 360 conditions per place. [2024-06-28 00:32:01,115 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 79 selfloop transitions, 79 changer transitions 19/179 dead transitions. [2024-06-28 00:32:01,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 2254 flow [2024-06-28 00:32:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:32:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:32:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:32:01,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263322884012539 [2024-06-28 00:32:01,117 INFO L175 Difference]: Start difference. First operand has 172 places, 145 transitions, 1632 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:32:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 2254 flow [2024-06-28 00:32:01,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 179 transitions, 2090 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:01,156 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 1700 flow [2024-06-28 00:32:01,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2024-06-28 00:32:01,157 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 00:32:01,157 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 1700 flow [2024-06-28 00:32:01,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:01,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:01,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:01,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:32:01,158 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:01,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -651498361, now seen corresponding path program 5 times [2024-06-28 00:32:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978109008] [2024-06-28 00:32:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:01,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978109008] [2024-06-28 00:32:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978109008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:02,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475268671] [2024-06-28 00:32:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:02,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:32:02,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 1700 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:02,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:02,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:32:02,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:03,216 INFO L124 PetriNetUnfolderBase]: 353/657 cut-off events. [2024-06-28 00:32:03,216 INFO L125 PetriNetUnfolderBase]: For 22519/22519 co-relation queries the response was YES. [2024-06-28 00:32:03,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 657 events. 353/657 cut-off events. For 22519/22519 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3015 event pairs, 40 based on Foata normal form. 8/664 useless extension candidates. Maximal degree in co-relation 4081. Up to 196 conditions per place. [2024-06-28 00:32:03,220 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 85 changer transitions 14/173 dead transitions. [2024-06-28 00:32:03,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 173 transitions, 2322 flow [2024-06-28 00:32:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:32:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2024-06-28 00:32:03,222 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 1700 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:32:03,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 173 transitions, 2322 flow [2024-06-28 00:32:03,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 173 transitions, 2097 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:03,266 INFO L231 Difference]: Finished difference. Result has 164 places, 141 transitions, 1585 flow [2024-06-28 00:32:03,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=164, PETRI_TRANSITIONS=141} [2024-06-28 00:32:03,267 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-06-28 00:32:03,267 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 141 transitions, 1585 flow [2024-06-28 00:32:03,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:03,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:03,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:03,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:32:03,268 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:03,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash -649620691, now seen corresponding path program 6 times [2024-06-28 00:32:03,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:03,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594493759] [2024-06-28 00:32:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594493759] [2024-06-28 00:32:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594493759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:04,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292291099] [2024-06-28 00:32:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:04,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:04,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 141 transitions, 1585 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:04,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:04,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:05,353 INFO L124 PetriNetUnfolderBase]: 334/626 cut-off events. [2024-06-28 00:32:05,354 INFO L125 PetriNetUnfolderBase]: For 24115/24115 co-relation queries the response was YES. [2024-06-28 00:32:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 626 events. 334/626 cut-off events. For 24115/24115 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2861 event pairs, 50 based on Foata normal form. 10/635 useless extension candidates. Maximal degree in co-relation 3868. Up to 302 conditions per place. [2024-06-28 00:32:05,357 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 65 selfloop transitions, 87 changer transitions 12/166 dead transitions. [2024-06-28 00:32:05,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 166 transitions, 2127 flow [2024-06-28 00:32:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:32:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:32:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:32:05,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263322884012539 [2024-06-28 00:32:05,358 INFO L175 Difference]: Start difference. First operand has 164 places, 141 transitions, 1585 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:32:05,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 166 transitions, 2127 flow [2024-06-28 00:32:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 166 transitions, 1962 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:05,391 INFO L231 Difference]: Finished difference. Result has 161 places, 137 transitions, 1572 flow [2024-06-28 00:32:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1572, PETRI_PLACES=161, PETRI_TRANSITIONS=137} [2024-06-28 00:32:05,391 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 133 predicate places. [2024-06-28 00:32:05,391 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 137 transitions, 1572 flow [2024-06-28 00:32:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:05,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:32:05,392 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -649624411, now seen corresponding path program 7 times [2024-06-28 00:32:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399039726] [2024-06-28 00:32:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399039726] [2024-06-28 00:32:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399039726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505397708] [2024-06-28 00:32:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:07,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:32:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 137 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:32:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:07,380 INFO L124 PetriNetUnfolderBase]: 320/604 cut-off events. [2024-06-28 00:32:07,380 INFO L125 PetriNetUnfolderBase]: For 19366/19366 co-relation queries the response was YES. [2024-06-28 00:32:07,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3821 conditions, 604 events. 320/604 cut-off events. For 19366/19366 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2749 event pairs, 46 based on Foata normal form. 8/611 useless extension candidates. Maximal degree in co-relation 3754. Up to 290 conditions per place. [2024-06-28 00:32:07,384 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 78 changer transitions 18/158 dead transitions. [2024-06-28 00:32:07,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 2054 flow [2024-06-28 00:32:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:32:07,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 00:32:07,385 INFO L175 Difference]: Start difference. First operand has 161 places, 137 transitions, 1572 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:32:07,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 2054 flow [2024-06-28 00:32:07,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 158 transitions, 1872 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:07,417 INFO L231 Difference]: Finished difference. Result has 158 places, 128 transitions, 1442 flow [2024-06-28 00:32:07,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1442, PETRI_PLACES=158, PETRI_TRANSITIONS=128} [2024-06-28 00:32:07,417 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 130 predicate places. [2024-06-28 00:32:07,417 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 128 transitions, 1442 flow [2024-06-28 00:32:07,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:07,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:07,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:32:07,418 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:07,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1419764981, now seen corresponding path program 1 times [2024-06-28 00:32:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790011451] [2024-06-28 00:32:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790011451] [2024-06-28 00:32:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790011451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:09,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520100856] [2024-06-28 00:32:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:09,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:09,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 128 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:09,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:09,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:09,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:09,628 INFO L124 PetriNetUnfolderBase]: 294/549 cut-off events. [2024-06-28 00:32:09,628 INFO L125 PetriNetUnfolderBase]: For 14660/14660 co-relation queries the response was YES. [2024-06-28 00:32:09,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 549 events. 294/549 cut-off events. For 14660/14660 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2412 event pairs, 38 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3439. Up to 385 conditions per place. [2024-06-28 00:32:09,631 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 96 selfloop transitions, 47 changer transitions 0/145 dead transitions. [2024-06-28 00:32:09,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1798 flow [2024-06-28 00:32:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 00:32:09,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-28 00:32:09,633 INFO L175 Difference]: Start difference. First operand has 158 places, 128 transitions, 1442 flow. Second operand 9 states and 107 transitions. [2024-06-28 00:32:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1798 flow [2024-06-28 00:32:09,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1631 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:09,658 INFO L231 Difference]: Finished difference. Result has 150 places, 129 transitions, 1383 flow [2024-06-28 00:32:09,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1383, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2024-06-28 00:32:09,658 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:32:09,658 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 129 transitions, 1383 flow [2024-06-28 00:32:09,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:09,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:09,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:32:09,659 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:09,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash -562932601, now seen corresponding path program 8 times [2024-06-28 00:32:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008767801] [2024-06-28 00:32:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:11,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008767801] [2024-06-28 00:32:11,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008767801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:11,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:11,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:11,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682603462] [2024-06-28 00:32:11,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:11,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:11,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:11,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:32:11,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 129 transitions, 1383 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:32:11,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:11,691 INFO L124 PetriNetUnfolderBase]: 335/636 cut-off events. [2024-06-28 00:32:11,691 INFO L125 PetriNetUnfolderBase]: For 22046/22046 co-relation queries the response was YES. [2024-06-28 00:32:11,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 636 events. 335/636 cut-off events. For 22046/22046 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2947 event pairs, 48 based on Foata normal form. 8/643 useless extension candidates. Maximal degree in co-relation 3990. Up to 348 conditions per place. [2024-06-28 00:32:11,695 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 90 selfloop transitions, 54 changer transitions 8/154 dead transitions. [2024-06-28 00:32:11,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 1897 flow [2024-06-28 00:32:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:32:11,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2024-06-28 00:32:11,696 INFO L175 Difference]: Start difference. First operand has 150 places, 129 transitions, 1383 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:32:11,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 1897 flow [2024-06-28 00:32:11,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 1789 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:11,736 INFO L231 Difference]: Finished difference. Result has 152 places, 126 transitions, 1357 flow [2024-06-28 00:32:11,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1357, PETRI_PLACES=152, PETRI_TRANSITIONS=126} [2024-06-28 00:32:11,736 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 00:32:11,736 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 126 transitions, 1357 flow [2024-06-28 00:32:11,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:11,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:11,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:11,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:32:11,737 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:11,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 564308225, now seen corresponding path program 9 times [2024-06-28 00:32:11,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:11,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578330520] [2024-06-28 00:32:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:13,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:13,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578330520] [2024-06-28 00:32:13,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578330520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:13,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:13,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922554352] [2024-06-28 00:32:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:13,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:13,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 126 transitions, 1357 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:13,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:13,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:13,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:13,917 INFO L124 PetriNetUnfolderBase]: 337/642 cut-off events. [2024-06-28 00:32:13,917 INFO L125 PetriNetUnfolderBase]: For 23494/23494 co-relation queries the response was YES. [2024-06-28 00:32:13,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 642 events. 337/642 cut-off events. For 23494/23494 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3008 event pairs, 58 based on Foata normal form. 10/651 useless extension candidates. Maximal degree in co-relation 3998. Up to 424 conditions per place. [2024-06-28 00:32:13,921 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 85 selfloop transitions, 50 changer transitions 13/150 dead transitions. [2024-06-28 00:32:13,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1785 flow [2024-06-28 00:32:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:32:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:32:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:32:13,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012539184952978 [2024-06-28 00:32:13,923 INFO L175 Difference]: Start difference. First operand has 152 places, 126 transitions, 1357 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:32:13,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1785 flow [2024-06-28 00:32:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 150 transitions, 1673 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:13,960 INFO L231 Difference]: Finished difference. Result has 153 places, 124 transitions, 1330 flow [2024-06-28 00:32:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1330, PETRI_PLACES=153, PETRI_TRANSITIONS=124} [2024-06-28 00:32:13,961 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 00:32:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 124 transitions, 1330 flow [2024-06-28 00:32:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:32:13,962 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:13,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1142768319, now seen corresponding path program 10 times [2024-06-28 00:32:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:13,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214063131] [2024-06-28 00:32:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214063131] [2024-06-28 00:32:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214063131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:15,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:15,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:15,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713684105] [2024-06-28 00:32:15,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:15,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:15,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:15,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 124 transitions, 1330 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:15,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:15,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:15,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:16,137 INFO L124 PetriNetUnfolderBase]: 299/568 cut-off events. [2024-06-28 00:32:16,137 INFO L125 PetriNetUnfolderBase]: For 16778/16778 co-relation queries the response was YES. [2024-06-28 00:32:16,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 568 events. 299/568 cut-off events. For 16778/16778 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2547 event pairs, 38 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 3346. Up to 357 conditions per place. [2024-06-28 00:32:16,140 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 84 selfloop transitions, 44 changer transitions 14/144 dead transitions. [2024-06-28 00:32:16,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 1720 flow [2024-06-28 00:32:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:32:16,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 00:32:16,142 INFO L175 Difference]: Start difference. First operand has 153 places, 124 transitions, 1330 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:32:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 1720 flow [2024-06-28 00:32:16,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 144 transitions, 1596 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:16,169 INFO L231 Difference]: Finished difference. Result has 149 places, 119 transitions, 1242 flow [2024-06-28 00:32:16,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1242, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2024-06-28 00:32:16,170 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 00:32:16,170 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 1242 flow [2024-06-28 00:32:16,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:16,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:16,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:32:16,171 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:16,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1142618217, now seen corresponding path program 2 times [2024-06-28 00:32:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:16,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405292942] [2024-06-28 00:32:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405292942] [2024-06-28 00:32:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405292942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600247926] [2024-06-28 00:32:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:18,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:18,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 119 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:18,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:18,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:18,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:18,566 INFO L124 PetriNetUnfolderBase]: 276/523 cut-off events. [2024-06-28 00:32:18,566 INFO L125 PetriNetUnfolderBase]: For 12428/12428 co-relation queries the response was YES. [2024-06-28 00:32:18,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 523 events. 276/523 cut-off events. For 12428/12428 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2286 event pairs, 39 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3097. Up to 359 conditions per place. [2024-06-28 00:32:18,569 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 96 selfloop transitions, 38 changer transitions 0/136 dead transitions. [2024-06-28 00:32:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 136 transitions, 1590 flow [2024-06-28 00:32:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:32:18,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 00:32:18,570 INFO L175 Difference]: Start difference. First operand has 149 places, 119 transitions, 1242 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:32:18,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 136 transitions, 1590 flow [2024-06-28 00:32:18,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 136 transitions, 1492 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:18,595 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 1236 flow [2024-06-28 00:32:18,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-28 00:32:18,595 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2024-06-28 00:32:18,595 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 1236 flow [2024-06-28 00:32:18,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:18,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:18,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:18,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:32:18,596 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:18,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2048867493, now seen corresponding path program 11 times [2024-06-28 00:32:18,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:18,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514985992] [2024-06-28 00:32:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:20,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514985992] [2024-06-28 00:32:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514985992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:20,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:20,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512157867] [2024-06-28 00:32:20,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:20,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:32:20,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 1236 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-28 00:32:20,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:20,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:32:20,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:20,771 INFO L124 PetriNetUnfolderBase]: 307/584 cut-off events. [2024-06-28 00:32:20,771 INFO L125 PetriNetUnfolderBase]: For 14990/14990 co-relation queries the response was YES. [2024-06-28 00:32:20,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 584 events. 307/584 cut-off events. For 14990/14990 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2663 event pairs, 52 based on Foata normal form. 10/593 useless extension candidates. Maximal degree in co-relation 3326. Up to 431 conditions per place. [2024-06-28 00:32:20,774 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 97 selfloop transitions, 34 changer transitions 14/147 dead transitions. [2024-06-28 00:32:20,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 147 transitions, 1704 flow [2024-06-28 00:32:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:32:20,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 00:32:20,776 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 1236 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:32:20,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 147 transitions, 1704 flow [2024-06-28 00:32:20,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 1618 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:20,805 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 1228 flow [2024-06-28 00:32:20,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2024-06-28 00:32:20,806 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 00:32:20,806 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 1228 flow [2024-06-28 00:32:20,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-28 00:32:20,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:20,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:32:20,807 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:20,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1193566791, now seen corresponding path program 3 times [2024-06-28 00:32:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417450195] [2024-06-28 00:32:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:22,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417450195] [2024-06-28 00:32:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417450195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:22,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398131021] [2024-06-28 00:32:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:22,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:22,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 1228 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:22,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:22,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:22,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:23,277 INFO L124 PetriNetUnfolderBase]: 278/533 cut-off events. [2024-06-28 00:32:23,278 INFO L125 PetriNetUnfolderBase]: For 11725/11725 co-relation queries the response was YES. [2024-06-28 00:32:23,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 533 events. 278/533 cut-off events. For 11725/11725 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2378 event pairs, 48 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 3086. Up to 450 conditions per place. [2024-06-28 00:32:23,281 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 106 selfloop transitions, 30 changer transitions 0/138 dead transitions. [2024-06-28 00:32:23,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 138 transitions, 1584 flow [2024-06-28 00:32:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:32:23,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:32:23,282 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 1228 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:32:23,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 138 transitions, 1584 flow [2024-06-28 00:32:23,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 138 transitions, 1522 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:23,307 INFO L231 Difference]: Finished difference. Result has 148 places, 121 transitions, 1244 flow [2024-06-28 00:32:23,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1244, PETRI_PLACES=148, PETRI_TRANSITIONS=121} [2024-06-28 00:32:23,307 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2024-06-28 00:32:23,307 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 121 transitions, 1244 flow [2024-06-28 00:32:23,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:23,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:23,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:32:23,308 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:23,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1193416689, now seen corresponding path program 12 times [2024-06-28 00:32:23,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112729135] [2024-06-28 00:32:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112729135] [2024-06-28 00:32:24,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112729135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:24,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049969513] [2024-06-28 00:32:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:25,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:25,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 121 transitions, 1244 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:25,475 INFO L124 PetriNetUnfolderBase]: 294/569 cut-off events. [2024-06-28 00:32:25,476 INFO L125 PetriNetUnfolderBase]: For 15671/15671 co-relation queries the response was YES. [2024-06-28 00:32:25,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3285 conditions, 569 events. 294/569 cut-off events. For 15671/15671 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2624 event pairs, 52 based on Foata normal form. 10/578 useless extension candidates. Maximal degree in co-relation 3225. Up to 409 conditions per place. [2024-06-28 00:32:25,478 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 92 selfloop transitions, 37 changer transitions 11/142 dead transitions. [2024-06-28 00:32:25,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 142 transitions, 1636 flow [2024-06-28 00:32:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:32:25,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:32:25,480 INFO L175 Difference]: Start difference. First operand has 148 places, 121 transitions, 1244 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:32:25,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 142 transitions, 1636 flow [2024-06-28 00:32:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 142 transitions, 1568 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:25,508 INFO L231 Difference]: Finished difference. Result has 150 places, 118 transitions, 1226 flow [2024-06-28 00:32:25,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1226, PETRI_PLACES=150, PETRI_TRANSITIONS=118} [2024-06-28 00:32:25,508 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:32:25,508 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 118 transitions, 1226 flow [2024-06-28 00:32:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:25,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:25,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:32:25,509 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:25,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:25,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1304017125, now seen corresponding path program 13 times [2024-06-28 00:32:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:25,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982600060] [2024-06-28 00:32:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:27,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:27,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982600060] [2024-06-28 00:32:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982600060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:27,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:27,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125683665] [2024-06-28 00:32:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:27,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:32:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 118 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:27,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:32:27,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:27,460 INFO L124 PetriNetUnfolderBase]: 311/608 cut-off events. [2024-06-28 00:32:27,461 INFO L125 PetriNetUnfolderBase]: For 20826/20826 co-relation queries the response was YES. [2024-06-28 00:32:27,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 608 events. 311/608 cut-off events. For 20826/20826 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2857 event pairs, 56 based on Foata normal form. 8/615 useless extension candidates. Maximal degree in co-relation 3693. Up to 383 conditions per place. [2024-06-28 00:32:27,464 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 95 selfloop transitions, 37 changer transitions 9/143 dead transitions. [2024-06-28 00:32:27,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 143 transitions, 1710 flow [2024-06-28 00:32:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:32:27,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2024-06-28 00:32:27,465 INFO L175 Difference]: Start difference. First operand has 150 places, 118 transitions, 1226 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:32:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 143 transitions, 1710 flow [2024-06-28 00:32:27,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 143 transitions, 1624 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:27,501 INFO L231 Difference]: Finished difference. Result has 148 places, 114 transitions, 1171 flow [2024-06-28 00:32:27,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1171, PETRI_PLACES=148, PETRI_TRANSITIONS=114} [2024-06-28 00:32:27,502 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2024-06-28 00:32:27,502 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 114 transitions, 1171 flow [2024-06-28 00:32:27,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:27,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:27,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:27,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:32:27,503 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:27,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1199130981, now seen corresponding path program 4 times [2024-06-28 00:32:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549801546] [2024-06-28 00:32:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:29,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:29,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549801546] [2024-06-28 00:32:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549801546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:29,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:29,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497274646] [2024-06-28 00:32:29,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:29,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:29,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 114 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:29,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:29,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:29,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:30,174 INFO L124 PetriNetUnfolderBase]: 294/573 cut-off events. [2024-06-28 00:32:30,174 INFO L125 PetriNetUnfolderBase]: For 16771/16771 co-relation queries the response was YES. [2024-06-28 00:32:30,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 573 events. 294/573 cut-off events. For 16771/16771 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2636 event pairs, 57 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 3520. Up to 490 conditions per place. [2024-06-28 00:32:30,177 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 102 selfloop transitions, 30 changer transitions 0/134 dead transitions. [2024-06-28 00:32:30,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 134 transitions, 1525 flow [2024-06-28 00:32:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:32:30,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764367816091954 [2024-06-28 00:32:30,178 INFO L175 Difference]: Start difference. First operand has 148 places, 114 transitions, 1171 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:32:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 134 transitions, 1525 flow [2024-06-28 00:32:30,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 1447 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:30,212 INFO L231 Difference]: Finished difference. Result has 148 places, 115 transitions, 1173 flow [2024-06-28 00:32:30,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1173, PETRI_PLACES=148, PETRI_TRANSITIONS=115} [2024-06-28 00:32:30,212 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2024-06-28 00:32:30,213 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 115 transitions, 1173 flow [2024-06-28 00:32:30,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:30,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:30,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:32:30,213 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:30,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1199138421, now seen corresponding path program 5 times [2024-06-28 00:32:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:30,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472303961] [2024-06-28 00:32:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472303961] [2024-06-28 00:32:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472303961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826828064] [2024-06-28 00:32:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:32,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:32,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 115 transitions, 1173 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:32,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:32,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:32,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:32,841 INFO L124 PetriNetUnfolderBase]: 298/581 cut-off events. [2024-06-28 00:32:32,841 INFO L125 PetriNetUnfolderBase]: For 15920/15920 co-relation queries the response was YES. [2024-06-28 00:32:32,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 581 events. 298/581 cut-off events. For 15920/15920 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2699 event pairs, 61 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3532. Up to 478 conditions per place. [2024-06-28 00:32:32,844 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 100 selfloop transitions, 33 changer transitions 0/135 dead transitions. [2024-06-28 00:32:32,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 135 transitions, 1523 flow [2024-06-28 00:32:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 00:32:32,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:32:32,845 INFO L175 Difference]: Start difference. First operand has 148 places, 115 transitions, 1173 flow. Second operand 12 states and 132 transitions. [2024-06-28 00:32:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 135 transitions, 1523 flow [2024-06-28 00:32:32,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 135 transitions, 1453 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:32,878 INFO L231 Difference]: Finished difference. Result has 150 places, 116 transitions, 1191 flow [2024-06-28 00:32:32,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1191, PETRI_PLACES=150, PETRI_TRANSITIONS=116} [2024-06-28 00:32:32,879 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:32:32,879 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 116 transitions, 1191 flow [2024-06-28 00:32:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:32,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:32,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:32:32,880 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:32,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1198923219, now seen corresponding path program 14 times [2024-06-28 00:32:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:32,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198248133] [2024-06-28 00:32:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:34,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198248133] [2024-06-28 00:32:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198248133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:34,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:34,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240097368] [2024-06-28 00:32:34,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:34,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:34,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 116 transitions, 1191 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:34,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:34,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:34,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:35,260 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-28 00:32:35,260 INFO L125 PetriNetUnfolderBase]: For 15852/15852 co-relation queries the response was YES. [2024-06-28 00:32:35,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 558 events. 285/558 cut-off events. For 15852/15852 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2577 event pairs, 48 based on Foata normal form. 10/567 useless extension candidates. Maximal degree in co-relation 3165. Up to 405 conditions per place. [2024-06-28 00:32:35,263 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 91 selfloop transitions, 32 changer transitions 14/139 dead transitions. [2024-06-28 00:32:35,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 139 transitions, 1581 flow [2024-06-28 00:32:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:32:35,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850574712643678 [2024-06-28 00:32:35,264 INFO L175 Difference]: Start difference. First operand has 150 places, 116 transitions, 1191 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:32:35,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 139 transitions, 1581 flow [2024-06-28 00:32:35,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 139 transitions, 1503 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:35,292 INFO L231 Difference]: Finished difference. Result has 152 places, 110 transitions, 1111 flow [2024-06-28 00:32:35,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=152, PETRI_TRANSITIONS=110} [2024-06-28 00:32:35,293 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 00:32:35,293 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 110 transitions, 1111 flow [2024-06-28 00:32:35,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:35,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:35,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:32:35,293 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:35,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1621577675, now seen corresponding path program 6 times [2024-06-28 00:32:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:35,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359906940] [2024-06-28 00:32:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:37,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359906940] [2024-06-28 00:32:37,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359906940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:37,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265741403] [2024-06-28 00:32:37,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:37,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:37,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:37,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 110 transitions, 1111 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:37,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:37,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:37,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:37,443 INFO L124 PetriNetUnfolderBase]: 256/507 cut-off events. [2024-06-28 00:32:37,443 INFO L125 PetriNetUnfolderBase]: For 12516/12516 co-relation queries the response was YES. [2024-06-28 00:32:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 507 events. 256/507 cut-off events. For 12516/12516 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2304 event pairs, 75 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 2917. Up to 400 conditions per place. [2024-06-28 00:32:37,446 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 91 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-06-28 00:32:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 125 transitions, 1433 flow [2024-06-28 00:32:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:32:37,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:32:37,448 INFO L175 Difference]: Start difference. First operand has 152 places, 110 transitions, 1111 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:32:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 125 transitions, 1433 flow [2024-06-28 00:32:37,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 125 transitions, 1350 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:32:37,477 INFO L231 Difference]: Finished difference. Result has 147 places, 111 transitions, 1116 flow [2024-06-28 00:32:37,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1116, PETRI_PLACES=147, PETRI_TRANSITIONS=111} [2024-06-28 00:32:37,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 00:32:37,478 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 111 transitions, 1116 flow [2024-06-28 00:32:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:37,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:37,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:37,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:32:37,478 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:37,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1567467889, now seen corresponding path program 7 times [2024-06-28 00:32:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023301204] [2024-06-28 00:32:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023301204] [2024-06-28 00:32:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023301204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031338912] [2024-06-28 00:32:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:39,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 111 transitions, 1116 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:39,828 INFO L124 PetriNetUnfolderBase]: 260/516 cut-off events. [2024-06-28 00:32:39,828 INFO L125 PetriNetUnfolderBase]: For 12782/12782 co-relation queries the response was YES. [2024-06-28 00:32:39,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 516 events. 260/516 cut-off events. For 12782/12782 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2365 event pairs, 74 based on Foata normal form. 2/517 useless extension candidates. Maximal degree in co-relation 2965. Up to 456 conditions per place. [2024-06-28 00:32:39,832 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 106 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-28 00:32:39,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 128 transitions, 1456 flow [2024-06-28 00:32:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:32:39,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-28 00:32:39,834 INFO L175 Difference]: Start difference. First operand has 147 places, 111 transitions, 1116 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:32:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 128 transitions, 1456 flow [2024-06-28 00:32:39,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 128 transitions, 1368 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:39,864 INFO L231 Difference]: Finished difference. Result has 150 places, 112 transitions, 1094 flow [2024-06-28 00:32:39,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1094, PETRI_PLACES=150, PETRI_TRANSITIONS=112} [2024-06-28 00:32:39,866 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:32:39,867 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 112 transitions, 1094 flow [2024-06-28 00:32:39,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:39,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:39,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:39,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:32:39,867 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:39,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1561903699, now seen corresponding path program 8 times [2024-06-28 00:32:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176769616] [2024-06-28 00:32:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:41,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176769616] [2024-06-28 00:32:41,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176769616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:41,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:41,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:41,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740991356] [2024-06-28 00:32:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:41,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:41,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:41,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:41,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:41,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:41,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 112 transitions, 1094 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:41,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:41,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:41,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:42,234 INFO L124 PetriNetUnfolderBase]: 264/524 cut-off events. [2024-06-28 00:32:42,234 INFO L125 PetriNetUnfolderBase]: For 13424/13424 co-relation queries the response was YES. [2024-06-28 00:32:42,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 524 events. 264/524 cut-off events. For 13424/13424 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2410 event pairs, 71 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 2982. Up to 455 conditions per place. [2024-06-28 00:32:42,237 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 102 selfloop transitions, 23 changer transitions 0/127 dead transitions. [2024-06-28 00:32:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 127 transitions, 1430 flow [2024-06-28 00:32:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:32:42,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:32:42,238 INFO L175 Difference]: Start difference. First operand has 150 places, 112 transitions, 1094 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:32:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 127 transitions, 1430 flow [2024-06-28 00:32:42,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 127 transitions, 1364 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:32:42,266 INFO L231 Difference]: Finished difference. Result has 149 places, 113 transitions, 1102 flow [2024-06-28 00:32:42,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1102, PETRI_PLACES=149, PETRI_TRANSITIONS=113} [2024-06-28 00:32:42,267 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 00:32:42,267 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 113 transitions, 1102 flow [2024-06-28 00:32:42,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:42,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:42,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:32:42,268 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:42,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1567475329, now seen corresponding path program 9 times [2024-06-28 00:32:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091371612] [2024-06-28 00:32:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:44,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091371612] [2024-06-28 00:32:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091371612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:44,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256104529] [2024-06-28 00:32:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:44,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:44,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 113 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:44,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:44,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:44,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:44,611 INFO L124 PetriNetUnfolderBase]: 268/532 cut-off events. [2024-06-28 00:32:44,611 INFO L125 PetriNetUnfolderBase]: For 14283/14283 co-relation queries the response was YES. [2024-06-28 00:32:44,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 532 events. 268/532 cut-off events. For 14283/14283 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2458 event pairs, 75 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3029. Up to 443 conditions per place. [2024-06-28 00:32:44,614 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-28 00:32:44,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 130 transitions, 1442 flow [2024-06-28 00:32:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:32:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:32:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 00:32:44,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 00:32:44,633 INFO L175 Difference]: Start difference. First operand has 149 places, 113 transitions, 1102 flow. Second operand 12 states and 126 transitions. [2024-06-28 00:32:44,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 130 transitions, 1442 flow [2024-06-28 00:32:44,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 1378 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:32:44,677 INFO L231 Difference]: Finished difference. Result has 153 places, 114 transitions, 1122 flow [2024-06-28 00:32:44,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1122, PETRI_PLACES=153, PETRI_TRANSITIONS=114} [2024-06-28 00:32:44,678 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 00:32:44,678 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 114 transitions, 1122 flow [2024-06-28 00:32:44,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:44,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:44,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:32:44,678 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:44,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1628228619, now seen corresponding path program 10 times [2024-06-28 00:32:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562657300] [2024-06-28 00:32:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562657300] [2024-06-28 00:32:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562657300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:46,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311347869] [2024-06-28 00:32:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:46,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:46,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:46,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 114 transitions, 1122 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:46,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:46,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:46,680 INFO L124 PetriNetUnfolderBase]: 272/540 cut-off events. [2024-06-28 00:32:46,681 INFO L125 PetriNetUnfolderBase]: For 15163/15163 co-relation queries the response was YES. [2024-06-28 00:32:46,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 540 events. 272/540 cut-off events. For 15163/15163 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2506 event pairs, 79 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 3098. Up to 467 conditions per place. [2024-06-28 00:32:46,684 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 99 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2024-06-28 00:32:46,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 128 transitions, 1456 flow [2024-06-28 00:32:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:32:46,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 00:32:46,685 INFO L175 Difference]: Start difference. First operand has 153 places, 114 transitions, 1122 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:32:46,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 128 transitions, 1456 flow [2024-06-28 00:32:46,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 128 transitions, 1382 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 00:32:46,717 INFO L231 Difference]: Finished difference. Result has 152 places, 115 transitions, 1134 flow [2024-06-28 00:32:46,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1134, PETRI_PLACES=152, PETRI_TRANSITIONS=115} [2024-06-28 00:32:46,717 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 00:32:46,717 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 115 transitions, 1134 flow [2024-06-28 00:32:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:46,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:46,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:46,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:32:46,718 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:46,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1628382441, now seen corresponding path program 15 times [2024-06-28 00:32:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036137984] [2024-06-28 00:32:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036137984] [2024-06-28 00:32:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036137984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:48,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:48,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278668169] [2024-06-28 00:32:48,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:48,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:48,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:48,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 115 transitions, 1134 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:48,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:48,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:48,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:48,835 INFO L124 PetriNetUnfolderBase]: 313/627 cut-off events. [2024-06-28 00:32:48,835 INFO L125 PetriNetUnfolderBase]: For 26410/26410 co-relation queries the response was YES. [2024-06-28 00:32:48,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 627 events. 313/627 cut-off events. For 26410/26410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3040 event pairs, 95 based on Foata normal form. 8/634 useless extension candidates. Maximal degree in co-relation 3765. Up to 448 conditions per place. [2024-06-28 00:32:48,839 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 97 selfloop transitions, 31 changer transitions 7/137 dead transitions. [2024-06-28 00:32:48,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 137 transitions, 1594 flow [2024-06-28 00:32:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:32:48,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:32:48,840 INFO L175 Difference]: Start difference. First operand has 152 places, 115 transitions, 1134 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:32:48,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 137 transitions, 1594 flow [2024-06-28 00:32:48,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 137 transitions, 1518 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:48,887 INFO L231 Difference]: Finished difference. Result has 155 places, 113 transitions, 1104 flow [2024-06-28 00:32:48,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1104, PETRI_PLACES=155, PETRI_TRANSITIONS=113} [2024-06-28 00:32:48,888 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 127 predicate places. [2024-06-28 00:32:48,888 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 113 transitions, 1104 flow [2024-06-28 00:32:48,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:48,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:48,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:32:48,889 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:48,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1159005053, now seen corresponding path program 11 times [2024-06-28 00:32:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:48,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094518955] [2024-06-28 00:32:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:48,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094518955] [2024-06-28 00:32:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094518955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173965627] [2024-06-28 00:32:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:50,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:50,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 113 transitions, 1104 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:50,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:50,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:50,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:51,174 INFO L124 PetriNetUnfolderBase]: 299/597 cut-off events. [2024-06-28 00:32:51,175 INFO L125 PetriNetUnfolderBase]: For 23575/23575 co-relation queries the response was YES. [2024-06-28 00:32:51,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 597 events. 299/597 cut-off events. For 23575/23575 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2856 event pairs, 98 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 3674. Up to 524 conditions per place. [2024-06-28 00:32:51,178 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 99 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2024-06-28 00:32:51,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 125 transitions, 1420 flow [2024-06-28 00:32:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:32:51,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-28 00:32:51,179 INFO L175 Difference]: Start difference. First operand has 155 places, 113 transitions, 1104 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:32:51,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 125 transitions, 1420 flow [2024-06-28 00:32:51,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 125 transitions, 1361 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:51,225 INFO L231 Difference]: Finished difference. Result has 153 places, 114 transitions, 1127 flow [2024-06-28 00:32:51,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1127, PETRI_PLACES=153, PETRI_TRANSITIONS=114} [2024-06-28 00:32:51,226 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 00:32:51,226 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 114 transitions, 1127 flow [2024-06-28 00:32:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:51,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:51,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:51,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:32:51,226 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:51,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1628234571, now seen corresponding path program 16 times [2024-06-28 00:32:51,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:51,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080452648] [2024-06-28 00:32:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080452648] [2024-06-28 00:32:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080452648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494823387] [2024-06-28 00:32:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:52,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:52,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 114 transitions, 1127 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:52,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:52,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:52,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:53,273 INFO L124 PetriNetUnfolderBase]: 315/633 cut-off events. [2024-06-28 00:32:53,274 INFO L125 PetriNetUnfolderBase]: For 27980/27980 co-relation queries the response was YES. [2024-06-28 00:32:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 633 events. 315/633 cut-off events. For 27980/27980 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3092 event pairs, 96 based on Foata normal form. 10/642 useless extension candidates. Maximal degree in co-relation 3794. Up to 511 conditions per place. [2024-06-28 00:32:53,277 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 93 selfloop transitions, 25 changer transitions 13/133 dead transitions. [2024-06-28 00:32:53,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 133 transitions, 1491 flow [2024-06-28 00:32:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:32:53,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:32:53,278 INFO L175 Difference]: Start difference. First operand has 153 places, 114 transitions, 1127 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:32:53,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 133 transitions, 1491 flow [2024-06-28 00:32:53,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 133 transitions, 1419 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:32:53,342 INFO L231 Difference]: Finished difference. Result has 156 places, 109 transitions, 1055 flow [2024-06-28 00:32:53,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1055, PETRI_PLACES=156, PETRI_TRANSITIONS=109} [2024-06-28 00:32:53,343 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 00:32:53,343 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 109 transitions, 1055 flow [2024-06-28 00:32:53,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:53,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:53,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:53,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:32:53,344 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:53,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1428932781, now seen corresponding path program 17 times [2024-06-28 00:32:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:53,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091544913] [2024-06-28 00:32:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:55,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091544913] [2024-06-28 00:32:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091544913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:32:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994568114] [2024-06-28 00:32:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:32:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:32:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:32:55,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:55,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 109 transitions, 1055 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:55,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:55,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:55,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:55,442 INFO L124 PetriNetUnfolderBase]: 302/614 cut-off events. [2024-06-28 00:32:55,442 INFO L125 PetriNetUnfolderBase]: For 28913/28913 co-relation queries the response was YES. [2024-06-28 00:32:55,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3731 conditions, 614 events. 302/614 cut-off events. For 28913/28913 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2990 event pairs, 101 based on Foata normal form. 10/623 useless extension candidates. Maximal degree in co-relation 3666. Up to 527 conditions per place. [2024-06-28 00:32:55,446 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 90 selfloop transitions, 16 changer transitions 15/123 dead transitions. [2024-06-28 00:32:55,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 123 transitions, 1361 flow [2024-06-28 00:32:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:32:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:32:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:32:55,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758620689655172 [2024-06-28 00:32:55,447 INFO L175 Difference]: Start difference. First operand has 156 places, 109 transitions, 1055 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:32:55,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 123 transitions, 1361 flow [2024-06-28 00:32:55,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 123 transitions, 1303 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:32:55,494 INFO L231 Difference]: Finished difference. Result has 154 places, 102 transitions, 941 flow [2024-06-28 00:32:55,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=941, PETRI_PLACES=154, PETRI_TRANSITIONS=102} [2024-06-28 00:32:55,496 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2024-06-28 00:32:55,497 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 102 transitions, 941 flow [2024-06-28 00:32:55,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:55,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:55,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:55,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:32:55,497 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:55,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:55,498 INFO L85 PathProgramCache]: Analyzing trace with hash -957908363, now seen corresponding path program 12 times [2024-06-28 00:32:55,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:55,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101226611] [2024-06-28 00:32:55,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:55,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:57,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101226611] [2024-06-28 00:32:57,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101226611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:57,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:57,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128250263] [2024-06-28 00:32:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:57,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:57,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:57,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 102 transitions, 941 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:57,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:57,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:57,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:57,700 INFO L124 PetriNetUnfolderBase]: 284/580 cut-off events. [2024-06-28 00:32:57,700 INFO L125 PetriNetUnfolderBase]: For 23907/23907 co-relation queries the response was YES. [2024-06-28 00:32:57,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 580 events. 284/580 cut-off events. For 23907/23907 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2809 event pairs, 98 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3596. Up to 505 conditions per place. [2024-06-28 00:32:57,704 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 93 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2024-06-28 00:32:57,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 114 transitions, 1321 flow [2024-06-28 00:32:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:32:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:32:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:32:57,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37547892720306514 [2024-06-28 00:32:57,706 INFO L175 Difference]: Start difference. First operand has 154 places, 102 transitions, 941 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:32:57,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 114 transitions, 1321 flow [2024-06-28 00:32:57,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 114 transitions, 1264 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:32:57,748 INFO L231 Difference]: Finished difference. Result has 149 places, 104 transitions, 993 flow [2024-06-28 00:32:57,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=149, PETRI_TRANSITIONS=104} [2024-06-28 00:32:57,748 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 00:32:57,749 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 104 transitions, 993 flow [2024-06-28 00:32:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:57,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:57,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:57,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:32:57,749 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:57,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash -957915803, now seen corresponding path program 13 times [2024-06-28 00:32:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718894816] [2024-06-28 00:32:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:57,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:32:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:32:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:32:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718894816] [2024-06-28 00:32:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718894816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:32:59,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:32:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:32:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618791787] [2024-06-28 00:32:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:32:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:32:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:32:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:32:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:32:59,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:32:59,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 104 transitions, 993 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:59,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:32:59,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:32:59,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:32:59,594 INFO L124 PetriNetUnfolderBase]: 281/575 cut-off events. [2024-06-28 00:32:59,594 INFO L125 PetriNetUnfolderBase]: For 21667/21667 co-relation queries the response was YES. [2024-06-28 00:32:59,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 575 events. 281/575 cut-off events. For 21667/21667 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2785 event pairs, 103 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3439. Up to 527 conditions per place. [2024-06-28 00:32:59,605 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 91 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-06-28 00:32:59,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 112 transitions, 1231 flow [2024-06-28 00:32:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:32:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:32:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:32:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-28 00:32:59,606 INFO L175 Difference]: Start difference. First operand has 149 places, 104 transitions, 993 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:32:59,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 112 transitions, 1231 flow [2024-06-28 00:32:59,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 112 transitions, 1155 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 00:32:59,652 INFO L231 Difference]: Finished difference. Result has 152 places, 104 transitions, 960 flow [2024-06-28 00:32:59,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=960, PETRI_PLACES=152, PETRI_TRANSITIONS=104} [2024-06-28 00:32:59,653 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 00:32:59,653 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 104 transitions, 960 flow [2024-06-28 00:32:59,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:32:59,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:32:59,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:32:59,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:32:59,653 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:32:59,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:32:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1628378721, now seen corresponding path program 18 times [2024-06-28 00:32:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:32:59,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199432486] [2024-06-28 00:32:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:32:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:32:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199432486] [2024-06-28 00:33:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199432486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:01,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:01,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649220780] [2024-06-28 00:33:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:01,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:01,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 104 transitions, 960 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:01,557 INFO L124 PetriNetUnfolderBase]: 268/552 cut-off events. [2024-06-28 00:33:01,558 INFO L125 PetriNetUnfolderBase]: For 20637/20637 co-relation queries the response was YES. [2024-06-28 00:33:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 552 events. 268/552 cut-off events. For 20637/20637 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2659 event pairs, 86 based on Foata normal form. 10/561 useless extension candidates. Maximal degree in co-relation 2947. Up to 412 conditions per place. [2024-06-28 00:33:01,561 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 77 selfloop transitions, 32 changer transitions 12/123 dead transitions. [2024-06-28 00:33:01,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 123 transitions, 1370 flow [2024-06-28 00:33:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:33:01,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-06-28 00:33:01,562 INFO L175 Difference]: Start difference. First operand has 152 places, 104 transitions, 960 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:33:01,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 123 transitions, 1370 flow [2024-06-28 00:33:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 123 transitions, 1335 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:33:01,605 INFO L231 Difference]: Finished difference. Result has 156 places, 100 transitions, 949 flow [2024-06-28 00:33:01,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=949, PETRI_PLACES=156, PETRI_TRANSITIONS=100} [2024-06-28 00:33:01,606 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 00:33:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 100 transitions, 949 flow [2024-06-28 00:33:01,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:01,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:33:01,606 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:01,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1158997613, now seen corresponding path program 14 times [2024-06-28 00:33:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417640505] [2024-06-28 00:33:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417640505] [2024-06-28 00:33:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417640505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:03,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:03,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685901685] [2024-06-28 00:33:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:03,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:03,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:03,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:03,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 100 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:03,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:03,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:03,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:03,723 INFO L124 PetriNetUnfolderBase]: 247/509 cut-off events. [2024-06-28 00:33:03,723 INFO L125 PetriNetUnfolderBase]: For 16619/16619 co-relation queries the response was YES. [2024-06-28 00:33:03,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 509 events. 247/509 cut-off events. For 16619/16619 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2381 event pairs, 81 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2867. Up to 416 conditions per place. [2024-06-28 00:33:03,726 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 87 selfloop transitions, 23 changer transitions 0/112 dead transitions. [2024-06-28 00:33:03,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 112 transitions, 1235 flow [2024-06-28 00:33:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:33:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:33:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:33:03,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-28 00:33:03,727 INFO L175 Difference]: Start difference. First operand has 156 places, 100 transitions, 949 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:33:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 112 transitions, 1235 flow [2024-06-28 00:33:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 112 transitions, 1132 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:33:03,765 INFO L231 Difference]: Finished difference. Result has 147 places, 101 transitions, 930 flow [2024-06-28 00:33:03,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=147, PETRI_TRANSITIONS=101} [2024-06-28 00:33:03,765 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 00:33:03,765 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 101 transitions, 930 flow [2024-06-28 00:33:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:03,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:03,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:33:03,779 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:03,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1413008645, now seen corresponding path program 15 times [2024-06-28 00:33:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618767762] [2024-06-28 00:33:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618767762] [2024-06-28 00:33:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618767762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773494689] [2024-06-28 00:33:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:05,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:05,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:05,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:05,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 101 transitions, 930 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:05,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:05,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:05,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:05,840 INFO L124 PetriNetUnfolderBase]: 244/504 cut-off events. [2024-06-28 00:33:05,840 INFO L125 PetriNetUnfolderBase]: For 13759/13759 co-relation queries the response was YES. [2024-06-28 00:33:05,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 504 events. 244/504 cut-off events. For 13759/13759 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2385 event pairs, 81 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 2653. Up to 462 conditions per place. [2024-06-28 00:33:05,843 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 96 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-28 00:33:05,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 111 transitions, 1170 flow [2024-06-28 00:33:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:33:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:33:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 00:33:05,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-28 00:33:05,845 INFO L175 Difference]: Start difference. First operand has 147 places, 101 transitions, 930 flow. Second operand 9 states and 93 transitions. [2024-06-28 00:33:05,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 111 transitions, 1170 flow [2024-06-28 00:33:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 111 transitions, 1098 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:33:05,876 INFO L231 Difference]: Finished difference. Result has 149 places, 101 transitions, 888 flow [2024-06-28 00:33:05,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=149, PETRI_TRANSITIONS=101} [2024-06-28 00:33:05,876 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-28 00:33:05,876 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 101 transitions, 888 flow [2024-06-28 00:33:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:05,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:05,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:33:05,877 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:05,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1622872191, now seen corresponding path program 19 times [2024-06-28 00:33:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:05,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494905893] [2024-06-28 00:33:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:07,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494905893] [2024-06-28 00:33:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494905893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:07,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:07,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088756730] [2024-06-28 00:33:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:07,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:07,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:07,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 101 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:07,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:07,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:07,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:08,087 INFO L124 PetriNetUnfolderBase]: 253/527 cut-off events. [2024-06-28 00:33:08,088 INFO L125 PetriNetUnfolderBase]: For 17996/17996 co-relation queries the response was YES. [2024-06-28 00:33:08,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 527 events. 253/527 cut-off events. For 17996/17996 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2520 event pairs, 83 based on Foata normal form. 10/536 useless extension candidates. Maximal degree in co-relation 2592. Up to 405 conditions per place. [2024-06-28 00:33:08,090 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 83 selfloop transitions, 19 changer transitions 13/117 dead transitions. [2024-06-28 00:33:08,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 117 transitions, 1196 flow [2024-06-28 00:33:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:33:08,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931034482758621 [2024-06-28 00:33:08,092 INFO L175 Difference]: Start difference. First operand has 149 places, 101 transitions, 888 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:33:08,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 117 transitions, 1196 flow [2024-06-28 00:33:08,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 117 transitions, 1097 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:08,122 INFO L231 Difference]: Finished difference. Result has 150 places, 95 transitions, 778 flow [2024-06-28 00:33:08,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=778, PETRI_PLACES=150, PETRI_TRANSITIONS=95} [2024-06-28 00:33:08,123 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:33:08,123 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 95 transitions, 778 flow [2024-06-28 00:33:08,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:08,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:08,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:08,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:33:08,124 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:08,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1147101898, now seen corresponding path program 1 times [2024-06-28 00:33:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69529906] [2024-06-28 00:33:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:08,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:09,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69529906] [2024-06-28 00:33:09,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69529906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:09,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:09,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996442564] [2024-06-28 00:33:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:10,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:10,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 95 transitions, 778 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:10,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:10,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:10,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:10,369 INFO L124 PetriNetUnfolderBase]: 222/469 cut-off events. [2024-06-28 00:33:10,369 INFO L125 PetriNetUnfolderBase]: For 11375/11375 co-relation queries the response was YES. [2024-06-28 00:33:10,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 469 events. 222/469 cut-off events. For 11375/11375 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2183 event pairs, 78 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2196. Up to 426 conditions per place. [2024-06-28 00:33:10,387 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 80 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-06-28 00:33:10,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 102 transitions, 994 flow [2024-06-28 00:33:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:33:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:33:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 00:33:10,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 00:33:10,389 INFO L175 Difference]: Start difference. First operand has 150 places, 95 transitions, 778 flow. Second operand 9 states and 96 transitions. [2024-06-28 00:33:10,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 102 transitions, 994 flow [2024-06-28 00:33:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 102 transitions, 931 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 00:33:10,421 INFO L231 Difference]: Finished difference. Result has 146 places, 95 transitions, 760 flow [2024-06-28 00:33:10,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=146, PETRI_TRANSITIONS=95} [2024-06-28 00:33:10,423 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2024-06-28 00:33:10,423 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 95 transitions, 760 flow [2024-06-28 00:33:10,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:10,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:10,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:33:10,427 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:10,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash 478430540, now seen corresponding path program 1 times [2024-06-28 00:33:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920803574] [2024-06-28 00:33:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920803574] [2024-06-28 00:33:12,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920803574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:12,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:12,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396040291] [2024-06-28 00:33:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:12,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:33:12,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 95 transitions, 760 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:33:12,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:12,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:33:12,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:12,710 INFO L124 PetriNetUnfolderBase]: 230/488 cut-off events. [2024-06-28 00:33:12,711 INFO L125 PetriNetUnfolderBase]: For 14169/14169 co-relation queries the response was YES. [2024-06-28 00:33:12,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 488 events. 230/488 cut-off events. For 14169/14169 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2293 event pairs, 42 based on Foata normal form. 6/493 useless extension candidates. Maximal degree in co-relation 2189. Up to 276 conditions per place. [2024-06-28 00:33:12,713 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 56 selfloop transitions, 27 changer transitions 27/112 dead transitions. [2024-06-28 00:33:12,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 112 transitions, 1034 flow [2024-06-28 00:33:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:33:12,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:33:12,715 INFO L175 Difference]: Start difference. First operand has 146 places, 95 transitions, 760 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:33:12,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 112 transitions, 1034 flow [2024-06-28 00:33:12,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 112 transitions, 994 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:33:12,743 INFO L231 Difference]: Finished difference. Result has 148 places, 79 transitions, 662 flow [2024-06-28 00:33:12,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=662, PETRI_PLACES=148, PETRI_TRANSITIONS=79} [2024-06-28 00:33:12,744 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2024-06-28 00:33:12,744 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 79 transitions, 662 flow [2024-06-28 00:33:12,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:33:12,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:12,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:12,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:33:12,744 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:12,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -909431638, now seen corresponding path program 2 times [2024-06-28 00:33:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:12,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677877409] [2024-06-28 00:33:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677877409] [2024-06-28 00:33:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677877409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:14,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263136125] [2024-06-28 00:33:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:14,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:14,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:33:14,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 79 transitions, 662 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-06-28 00:33:14,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:14,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:33:14,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:15,160 INFO L124 PetriNetUnfolderBase]: 198/414 cut-off events. [2024-06-28 00:33:15,161 INFO L125 PetriNetUnfolderBase]: For 14922/14922 co-relation queries the response was YES. [2024-06-28 00:33:15,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 414 events. 198/414 cut-off events. For 14922/14922 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1836 event pairs, 39 based on Foata normal form. 6/419 useless extension candidates. Maximal degree in co-relation 1958. Up to 281 conditions per place. [2024-06-28 00:33:15,163 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 57 selfloop transitions, 21 changer transitions 16/96 dead transitions. [2024-06-28 00:33:15,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 96 transitions, 914 flow [2024-06-28 00:33:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:33:15,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:33:15,164 INFO L175 Difference]: Start difference. First operand has 148 places, 79 transitions, 662 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:33:15,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 96 transitions, 914 flow [2024-06-28 00:33:15,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 96 transitions, 816 flow, removed 10 selfloop flow, removed 19 redundant places. [2024-06-28 00:33:15,185 INFO L231 Difference]: Finished difference. Result has 124 places, 71 transitions, 563 flow [2024-06-28 00:33:15,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=124, PETRI_TRANSITIONS=71} [2024-06-28 00:33:15,186 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 96 predicate places. [2024-06-28 00:33:15,186 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 71 transitions, 563 flow [2024-06-28 00:33:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-06-28 00:33:15,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:15,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:33:15,186 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:15,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1947084590, now seen corresponding path program 3 times [2024-06-28 00:33:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880402436] [2024-06-28 00:33:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:17,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880402436] [2024-06-28 00:33:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880402436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:17,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:17,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:33:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108142894] [2024-06-28 00:33:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:17,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:33:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:33:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:33:17,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:17,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 71 transitions, 563 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:17,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:17,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:17,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:17,868 INFO L124 PetriNetUnfolderBase]: 180/376 cut-off events. [2024-06-28 00:33:17,869 INFO L125 PetriNetUnfolderBase]: For 8870/8870 co-relation queries the response was YES. [2024-06-28 00:33:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 376 events. 180/376 cut-off events. For 8870/8870 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1592 event pairs, 39 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 1665. Up to 261 conditions per place. [2024-06-28 00:33:17,870 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 19 changer transitions 14/87 dead transitions. [2024-06-28 00:33:17,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 87 transitions, 789 flow [2024-06-28 00:33:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:33:17,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2024-06-28 00:33:17,885 INFO L175 Difference]: Start difference. First operand has 124 places, 71 transitions, 563 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:33:17,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 87 transitions, 789 flow [2024-06-28 00:33:17,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 87 transitions, 737 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:33:17,897 INFO L231 Difference]: Finished difference. Result has 114 places, 65 transitions, 514 flow [2024-06-28 00:33:17,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=514, PETRI_PLACES=114, PETRI_TRANSITIONS=65} [2024-06-28 00:33:17,897 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 00:33:17,897 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 65 transitions, 514 flow [2024-06-28 00:33:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:17,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:33:17,898 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:17,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1947315230, now seen corresponding path program 4 times [2024-06-28 00:33:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376993502] [2024-06-28 00:33:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376993502] [2024-06-28 00:33:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376993502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:19,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:19,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146080615] [2024-06-28 00:33:19,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:19,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:19,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:33:19,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 65 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-06-28 00:33:19,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:19,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:33:19,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:20,221 INFO L124 PetriNetUnfolderBase]: 160/340 cut-off events. [2024-06-28 00:33:20,221 INFO L125 PetriNetUnfolderBase]: For 6658/6658 co-relation queries the response was YES. [2024-06-28 00:33:20,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 340 events. 160/340 cut-off events. For 6658/6658 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1397 event pairs, 35 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 1479. Up to 225 conditions per place. [2024-06-28 00:33:20,222 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 43 selfloop transitions, 10 changer transitions 26/81 dead transitions. [2024-06-28 00:33:20,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 81 transitions, 722 flow [2024-06-28 00:33:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:33:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:33:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 00:33:20,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421455938697318 [2024-06-28 00:33:20,224 INFO L175 Difference]: Start difference. First operand has 114 places, 65 transitions, 514 flow. Second operand 9 states and 110 transitions. [2024-06-28 00:33:20,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 81 transitions, 722 flow [2024-06-28 00:33:20,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 81 transitions, 674 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:33:20,234 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 406 flow [2024-06-28 00:33:20,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=406, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2024-06-28 00:33:20,234 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2024-06-28 00:33:20,234 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 406 flow [2024-06-28 00:33:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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) [2024-06-28 00:33:20,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:20,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:33:20,235 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:20,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1237011260, now seen corresponding path program 5 times [2024-06-28 00:33:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492311271] [2024-06-28 00:33:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492311271] [2024-06-28 00:33:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492311271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:22,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:22,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:22,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840957812] [2024-06-28 00:33:22,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:22,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:22,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:22,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 406 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:22,676 INFO L124 PetriNetUnfolderBase]: 131/274 cut-off events. [2024-06-28 00:33:22,677 INFO L125 PetriNetUnfolderBase]: For 4729/4729 co-relation queries the response was YES. [2024-06-28 00:33:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 274 events. 131/274 cut-off events. For 4729/4729 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1057 event pairs, 35 based on Foata normal form. 6/279 useless extension candidates. Maximal degree in co-relation 1183. Up to 190 conditions per place. [2024-06-28 00:33:22,678 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 37 selfloop transitions, 13 changer transitions 11/63 dead transitions. [2024-06-28 00:33:22,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 63 transitions, 560 flow [2024-06-28 00:33:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:33:22,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-28 00:33:22,679 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 406 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:33:22,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 63 transitions, 560 flow [2024-06-28 00:33:22,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 63 transitions, 510 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:33:22,685 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 366 flow [2024-06-28 00:33:22,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2024-06-28 00:33:22,686 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 59 predicate places. [2024-06-28 00:33:22,686 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 366 flow [2024-06-28 00:33:22,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:22,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:22,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:22,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:33:22,686 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:22,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1200428204, now seen corresponding path program 6 times [2024-06-28 00:33:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:22,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326937224] [2024-06-28 00:33:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:22,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326937224] [2024-06-28 00:33:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326937224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:24,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:33:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320920597] [2024-06-28 00:33:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:33:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:33:24,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:33:24,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:24,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 49 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:24,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:24,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:24,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:25,211 INFO L124 PetriNetUnfolderBase]: 128/269 cut-off events. [2024-06-28 00:33:25,211 INFO L125 PetriNetUnfolderBase]: For 3532/3532 co-relation queries the response was YES. [2024-06-28 00:33:25,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 269 events. 128/269 cut-off events. For 3532/3532 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1028 event pairs, 34 based on Foata normal form. 6/274 useless extension candidates. Maximal degree in co-relation 1117. Up to 205 conditions per place. [2024-06-28 00:33:25,212 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 38 selfloop transitions, 13 changer transitions 10/63 dead transitions. [2024-06-28 00:33:25,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 63 transitions, 543 flow [2024-06-28 00:33:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:33:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:33:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 00:33:25,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-28 00:33:25,213 INFO L175 Difference]: Start difference. First operand has 87 places, 49 transitions, 366 flow. Second operand 11 states and 109 transitions. [2024-06-28 00:33:25,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 63 transitions, 543 flow [2024-06-28 00:33:25,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 63 transitions, 500 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:25,217 INFO L231 Difference]: Finished difference. Result has 86 places, 48 transitions, 354 flow [2024-06-28 00:33:25,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=354, PETRI_PLACES=86, PETRI_TRANSITIONS=48} [2024-06-28 00:33:25,218 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-06-28 00:33:25,218 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 48 transitions, 354 flow [2024-06-28 00:33:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:25,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:25,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:25,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:33:25,219 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:25,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash 141474340, now seen corresponding path program 1 times [2024-06-28 00:33:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481860161] [2024-06-28 00:33:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481860161] [2024-06-28 00:33:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481860161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992720332] [2024-06-28 00:33:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:27,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:27,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 48 transitions, 354 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:27,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:27,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:27,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:27,745 INFO L124 PetriNetUnfolderBase]: 101/216 cut-off events. [2024-06-28 00:33:27,746 INFO L125 PetriNetUnfolderBase]: For 2251/2251 co-relation queries the response was YES. [2024-06-28 00:33:27,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 216 events. 101/216 cut-off events. For 2251/2251 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 764 event pairs, 26 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 807. Up to 144 conditions per place. [2024-06-28 00:33:27,747 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 31 selfloop transitions, 13 changer transitions 12/58 dead transitions. [2024-06-28 00:33:27,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 58 transitions, 490 flow [2024-06-28 00:33:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:33:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:33:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 00:33:27,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:33:27,748 INFO L175 Difference]: Start difference. First operand has 86 places, 48 transitions, 354 flow. Second operand 11 states and 110 transitions. [2024-06-28 00:33:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 58 transitions, 490 flow [2024-06-28 00:33:27,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 58 transitions, 441 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:33:27,751 INFO L231 Difference]: Finished difference. Result has 84 places, 41 transitions, 278 flow [2024-06-28 00:33:27,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=278, PETRI_PLACES=84, PETRI_TRANSITIONS=41} [2024-06-28 00:33:27,752 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-28 00:33:27,752 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 41 transitions, 278 flow [2024-06-28 00:33:27,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:27,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:27,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:33:27,753 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:27,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 853596042, now seen corresponding path program 7 times [2024-06-28 00:33:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:27,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861791347] [2024-06-28 00:33:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:29,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861791347] [2024-06-28 00:33:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861791347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424328370] [2024-06-28 00:33:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:29,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:29,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 41 transitions, 278 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:29,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:29,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:29,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:29,948 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2024-06-28 00:33:29,948 INFO L125 PetriNetUnfolderBase]: For 1864/1864 co-relation queries the response was YES. [2024-06-28 00:33:29,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 193 events. 88/193 cut-off events. For 1864/1864 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 655 event pairs, 18 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 673. Up to 130 conditions per place. [2024-06-28 00:33:29,949 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 30 selfloop transitions, 8 changer transitions 14/54 dead transitions. [2024-06-28 00:33:29,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 54 transitions, 412 flow [2024-06-28 00:33:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:33:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:33:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:33:29,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-28 00:33:29,951 INFO L175 Difference]: Start difference. First operand has 84 places, 41 transitions, 278 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:33:29,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 54 transitions, 412 flow [2024-06-28 00:33:29,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 356 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 00:33:29,968 INFO L231 Difference]: Finished difference. Result has 74 places, 37 transitions, 220 flow [2024-06-28 00:33:29,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=220, PETRI_PLACES=74, PETRI_TRANSITIONS=37} [2024-06-28 00:33:29,969 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-28 00:33:29,969 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 37 transitions, 220 flow [2024-06-28 00:33:29,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:29,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:29,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:29,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:33:29,970 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:29,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1930232668, now seen corresponding path program 8 times [2024-06-28 00:33:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:29,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964442921] [2024-06-28 00:33:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:29,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964442921] [2024-06-28 00:33:32,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964442921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:32,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:32,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:33:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731869544] [2024-06-28 00:33:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:33:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:33:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:33:32,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:32,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 37 transitions, 220 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:32,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:32,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:32,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:32,468 INFO L124 PetriNetUnfolderBase]: 74/167 cut-off events. [2024-06-28 00:33:32,469 INFO L125 PetriNetUnfolderBase]: For 1602/1602 co-relation queries the response was YES. [2024-06-28 00:33:32,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 167 events. 74/167 cut-off events. For 1602/1602 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 530 event pairs, 17 based on Foata normal form. 6/172 useless extension candidates. Maximal degree in co-relation 552. Up to 82 conditions per place. [2024-06-28 00:33:32,469 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 25 selfloop transitions, 11 changer transitions 10/48 dead transitions. [2024-06-28 00:33:32,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 48 transitions, 336 flow [2024-06-28 00:33:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 00:33:32,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:33:32,470 INFO L175 Difference]: Start difference. First operand has 74 places, 37 transitions, 220 flow. Second operand 10 states and 100 transitions. [2024-06-28 00:33:32,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 48 transitions, 336 flow [2024-06-28 00:33:32,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 48 transitions, 300 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:33:32,473 INFO L231 Difference]: Finished difference. Result has 66 places, 33 transitions, 191 flow [2024-06-28 00:33:32,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=191, PETRI_PLACES=66, PETRI_TRANSITIONS=33} [2024-06-28 00:33:32,473 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2024-06-28 00:33:32,473 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 33 transitions, 191 flow [2024-06-28 00:33:32,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:32,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:32,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:32,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:33:32,474 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:32,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash 147737146, now seen corresponding path program 9 times [2024-06-28 00:33:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397144107] [2024-06-28 00:33:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:32,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:34,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397144107] [2024-06-28 00:33:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397144107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:33:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025041031] [2024-06-28 00:33:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:34,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:33:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:33:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:33:34,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:34,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 33 transitions, 191 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:34,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:34,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:34,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:34,945 INFO L124 PetriNetUnfolderBase]: 62/143 cut-off events. [2024-06-28 00:33:34,945 INFO L125 PetriNetUnfolderBase]: For 1222/1222 co-relation queries the response was YES. [2024-06-28 00:33:34,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 143 events. 62/143 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 415 event pairs, 16 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 470. Up to 84 conditions per place. [2024-06-28 00:33:34,945 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 22 selfloop transitions, 9 changer transitions 10/43 dead transitions. [2024-06-28 00:33:34,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 43 transitions, 295 flow [2024-06-28 00:33:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:33:34,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-28 00:33:34,947 INFO L175 Difference]: Start difference. First operand has 66 places, 33 transitions, 191 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:33:34,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 43 transitions, 295 flow [2024-06-28 00:33:34,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 267 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:33:34,948 INFO L231 Difference]: Finished difference. Result has 61 places, 30 transitions, 168 flow [2024-06-28 00:33:34,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=30} [2024-06-28 00:33:34,949 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 00:33:34,949 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 30 transitions, 168 flow [2024-06-28 00:33:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:34,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:34,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:34,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:33:34,949 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:34,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1064521370, now seen corresponding path program 10 times [2024-06-28 00:33:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785436593] [2024-06-28 00:33:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:34,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785436593] [2024-06-28 00:33:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785436593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:33:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199854351] [2024-06-28 00:33:36,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:33:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:33:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:33:37,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:37,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 30 transitions, 168 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:37,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:37,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:37,420 INFO L124 PetriNetUnfolderBase]: 55/130 cut-off events. [2024-06-28 00:33:37,420 INFO L125 PetriNetUnfolderBase]: For 900/900 co-relation queries the response was YES. [2024-06-28 00:33:37,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 130 events. 55/130 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 17 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 414. Up to 68 conditions per place. [2024-06-28 00:33:37,421 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 18 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-28 00:33:37,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 40 transitions, 266 flow [2024-06-28 00:33:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:33:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:33:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:33:37,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-28 00:33:37,422 INFO L175 Difference]: Start difference. First operand has 61 places, 30 transitions, 168 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:33:37,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 40 transitions, 266 flow [2024-06-28 00:33:37,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 40 transitions, 242 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:33:37,423 INFO L231 Difference]: Finished difference. Result has 57 places, 24 transitions, 126 flow [2024-06-28 00:33:37,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=24} [2024-06-28 00:33:37,423 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2024-06-28 00:33:37,423 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 24 transitions, 126 flow [2024-06-28 00:33:37,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:37,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:33:37,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:37,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:33:37,424 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:33:37,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:33:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 568496172, now seen corresponding path program 11 times [2024-06-28 00:33:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:33:37,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570006624] [2024-06-28 00:33:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:33:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:33:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:33:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:33:39,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:33:39,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570006624] [2024-06-28 00:33:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570006624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:33:39,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:33:39,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:33:39,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967688320] [2024-06-28 00:33:39,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:33:39,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:33:39,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:33:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:33:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:33:39,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:33:39,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 24 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:39,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:33:39,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:33:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:33:39,598 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-28 00:33:39,598 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-06-28 00:33:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 75 events. 30/75 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 1 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 209. Up to 24 conditions per place. [2024-06-28 00:33:39,599 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-28 00:33:39,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 31 transitions, 178 flow [2024-06-28 00:33:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:33:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:33:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-28 00:33:39,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2946708463949843 [2024-06-28 00:33:39,600 INFO L175 Difference]: Start difference. First operand has 57 places, 24 transitions, 126 flow. Second operand 11 states and 94 transitions. [2024-06-28 00:33:39,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 31 transitions, 178 flow [2024-06-28 00:33:39,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 139 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 00:33:39,601 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-28 00:33:39,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-28 00:33:39,601 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2024-06-28 00:33:39,601 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-28 00:33:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:33:39,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:33:39,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:33:39,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:33:39,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:33:39,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:33:39,616 INFO L445 BasicCegarLoop]: Path program histogram: [19, 15, 11, 9, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:33:39,620 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:33:39,621 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:33:39,624 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:33:39,624 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:33:39,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:33:39 BasicIcfg [2024-06-28 00:33:39,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:33:39,625 INFO L158 Benchmark]: Toolchain (without parser) took 197251.62ms. Allocated memory was 169.9MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 107.5MB in the beginning and 998.9MB in the end (delta: -891.4MB). Peak memory consumption was 386.8MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,626 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:33:39,626 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:33:39,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 966.10ms. Allocated memory is still 169.9MB. Free memory was 107.2MB in the beginning and 120.3MB in the end (delta: -13.1MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.21ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 113.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,626 INFO L158 Benchmark]: Boogie Preprocessor took 119.03ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 109.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,627 INFO L158 Benchmark]: RCFGBuilder took 1291.73ms. Allocated memory is still 169.9MB. Free memory was 109.2MB in the beginning and 114.8MB in the end (delta: -5.6MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,627 INFO L158 Benchmark]: TraceAbstraction took 194750.47ms. Allocated memory was 169.9MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 114.0MB in the beginning and 998.9MB in the end (delta: -884.9MB). Peak memory consumption was 391.0MB. Max. memory is 16.1GB. [2024-06-28 00:33:39,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 966.10ms. Allocated memory is still 169.9MB. Free memory was 107.2MB in the beginning and 120.3MB in the end (delta: -13.1MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.21ms. Allocated memory is still 169.9MB. Free memory was 120.3MB in the beginning and 113.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.03ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 109.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1291.73ms. Allocated memory is still 169.9MB. Free memory was 109.2MB in the beginning and 114.8MB in the end (delta: -5.6MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. * TraceAbstraction took 194750.47ms. Allocated memory was 169.9MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 114.0MB in the beginning and 998.9MB in the end (delta: -884.9MB). Peak memory consumption was 391.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 810]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 811]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 46 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 194.6s, OverallIterations: 90, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4555 SdHoareTripleChecker+Valid, 24.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3824 mSDsluCounter, 1335 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 1470 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31491 IncrementalHoareTripleChecker+Invalid, 32961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1470 mSolverCounterUnsat, 314 mSDtfsCounter, 31491 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 916 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 31.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1700occurred in iteration=47, InterpolantAutomatonStates: 826, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 148.5s InterpolantComputationTime, 1348 NumberOfCodeBlocks, 1348 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 1258 ConstructedInterpolants, 0 QuantifiedInterpolants, 61680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 90 InterpolantComputations, 90 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:33:39,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE