./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix000.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/mix000.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix000.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:59:56,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:59:56,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:59:56,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:59:56,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:59:56,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:59:56,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:59:56,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:59:56,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:59:56,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:59:56,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:59:56,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:59:56,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:59:56,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:59:56,231 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:59:56,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:59:56,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:59:56,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:59:56,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:59:56,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:59:56,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:59:56,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:59:56,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:59:56,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:59:56,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:59:56,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:59:56,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:59:56,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:59:56,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:59:56,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:59:56,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:59:56,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:59:56,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:59:56,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:59:56,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:59:56,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:59:56,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:59:56,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:59:56,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:59:56,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:59:56,237 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:59:56,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:59:56,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:59:56,238 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:59:56,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:59:56,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:59:56,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:59:56,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:59:56,477 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:59:56,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 21:59:57,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:59:57,711 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:59:57,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 21:59:57,735 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21312685c/28713f4e94984a54aeaae8eac82dc754/FLAG20dc57ab9 [2024-06-27 21:59:57,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21312685c/28713f4e94984a54aeaae8eac82dc754 [2024-06-27 21:59:57,747 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:59:57,749 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:59:57,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix000.opt.yml/witness.yml [2024-06-27 21:59:57,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:59:57,804 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:59:57,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:59:57,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:59:57,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:59:57,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:59:57" (1/2) ... [2024-06-27 21:59:57,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49923e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:59:57, skipping insertion in model container [2024-06-27 21:59:57,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:59:57" (1/2) ... [2024-06-27 21:59:57,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@569270e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:59:57, skipping insertion in model container [2024-06-27 21:59:57,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:59:57" (2/2) ... [2024-06-27 21:59:57,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49923e95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:57, skipping insertion in model container [2024-06-27 21:59:57,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:59:57" (2/2) ... [2024-06-27 21:59:57,812 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:59:57,840 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:59:57,842 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 21:59:57,842 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 21:59:57,842 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:59:57,842 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 21:59:57,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:59:58,074 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i[987,1000] [2024-06-27 21:59:58,211 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:59:58,220 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:59:58,248 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:59:58,332 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:59:58,362 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:59:58,362 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58 WrapperNode [2024-06-27 21:59:58,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:59:58,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:59:58,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:59:58,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:59:58,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,437 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 21:59:58,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:59:58,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:59:58,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:59:58,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:59:58,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,492 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:59:58,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:59:58,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:59:58,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:59:58,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:59:58,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (1/1) ... [2024-06-27 21:59:58,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:59:58,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:59:58,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:59:58,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:59:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:59:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:59:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:59:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:59:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:59:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:59:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:59:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:59:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:59:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:59:58,604 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:59:58,739 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:59:58,741 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:59:59,087 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:59:59,087 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:59:59,256 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:59:59,256 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:59:59,256 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:59:59 BoogieIcfgContainer [2024-06-27 21:59:59,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:59:59,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:59:59,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:59:59,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:59:59,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:59:57" (1/4) ... [2024-06-27 21:59:59,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241ab681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:59:59, skipping insertion in model container [2024-06-27 21:59:59,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:59:57" (2/4) ... [2024-06-27 21:59:59,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241ab681 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:59:59, skipping insertion in model container [2024-06-27 21:59:59,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:59:58" (3/4) ... [2024-06-27 21:59:59,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241ab681 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:59:59, skipping insertion in model container [2024-06-27 21:59:59,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:59:59" (4/4) ... [2024-06-27 21:59:59,265 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-27 21:59:59,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:59:59,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:59:59,280 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:59:59,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:59:59,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 21:59:59,375 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 21:59:59,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:59:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 21:59:59,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 21:59:59,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 21:59:59,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:59:59,400 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;@2084693e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:59:59,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:59:59,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:59:59,404 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:59:59,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:59:59,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:59:59,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:59:59,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:59:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:59:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash 345507155, now seen corresponding path program 1 times [2024-06-27 21:59:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:59:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376756610] [2024-06-27 21:59:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:59:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:59:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:00,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:00,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376756610] [2024-06-27 22:00:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376756610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:00,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:00:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172356636] [2024-06-27 22:00:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:00,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:00:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:00:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:00:00,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 22:00:00,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:00,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:00,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 22:00:00,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:00,957 INFO L124 PetriNetUnfolderBase]: 372/770 cut-off events. [2024-06-27 22:00:00,957 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:00:00,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 770 events. 372/770 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4289 event pairs, 284 based on Foata normal form. 30/726 useless extension candidates. Maximal degree in co-relation 1404. Up to 620 conditions per place. [2024-06-27 22:00:00,967 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:00:00,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 161 flow [2024-06-27 22:00:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:00:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:00:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 22:00:00,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 22:00:00,980 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 22:00:00,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 161 flow [2024-06-27 22:00:00,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:00:00,985 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:00:00,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:00:00,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:00:00,990 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:00:00,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:00,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:00,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:00:00,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:00,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1319925042, now seen corresponding path program 1 times [2024-06-27 22:00:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933231648] [2024-06-27 22:00:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933231648] [2024-06-27 22:00:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933231648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:00:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909567849] [2024-06-27 22:00:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:00:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:01,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:00:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:00:01,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:00:01,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:01,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:01,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:00:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:02,014 INFO L124 PetriNetUnfolderBase]: 515/899 cut-off events. [2024-06-27 22:00:02,014 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 22:00:02,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 899 events. 515/899 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4531 event pairs, 247 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 1946. Up to 832 conditions per place. [2024-06-27 22:00:02,020 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-27 22:00:02,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 225 flow [2024-06-27 22:00:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:00:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:00:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 22:00:02,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 22:00:02,023 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-06-27 22:00:02,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 225 flow [2024-06-27 22:00:02,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:02,027 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 121 flow [2024-06-27 22:00:02,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 22:00:02,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 22:00:02,029 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 121 flow [2024-06-27 22:00:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:02,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:02,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:02,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:00:02,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:02,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2031995632, now seen corresponding path program 1 times [2024-06-27 22:00:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787479835] [2024-06-27 22:00:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787479835] [2024-06-27 22:00:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787479835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:02,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:00:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852776440] [2024-06-27 22:00:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:00:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:00:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:00:02,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:00:02,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:02,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:02,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:00:02,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:03,166 INFO L124 PetriNetUnfolderBase]: 499/851 cut-off events. [2024-06-27 22:00:03,167 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-27 22:00:03,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 851 events. 499/851 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4216 event pairs, 138 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 2027. Up to 790 conditions per place. [2024-06-27 22:00:03,172 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 47 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-27 22:00:03,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 291 flow [2024-06-27 22:00:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:00:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:00:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 22:00:03,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-06-27 22:00:03,177 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 121 flow. Second operand 5 states and 117 transitions. [2024-06-27 22:00:03,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 291 flow [2024-06-27 22:00:03,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:00:03,181 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 147 flow [2024-06-27 22:00:03,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-27 22:00:03,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 22:00:03,182 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 147 flow [2024-06-27 22:00:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:03,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:03,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:00:03,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:03,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1709702205, now seen corresponding path program 1 times [2024-06-27 22:00:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:03,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942566482] [2024-06-27 22:00:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:03,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942566482] [2024-06-27 22:00:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942566482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:04,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:00:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833669245] [2024-06-27 22:00:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:00:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:00:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:00:04,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:00:04,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:04,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:04,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:00:04,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:04,821 INFO L124 PetriNetUnfolderBase]: 483/962 cut-off events. [2024-06-27 22:00:04,821 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-06-27 22:00:04,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 962 events. 483/962 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5332 event pairs, 225 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 2242. Up to 748 conditions per place. [2024-06-27 22:00:04,827 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 22:00:04,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 357 flow [2024-06-27 22:00:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:00:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:00:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 22:00:04,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261261261261262 [2024-06-27 22:00:04,829 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 147 flow. Second operand 6 states and 139 transitions. [2024-06-27 22:00:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 357 flow [2024-06-27 22:00:04,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 342 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:04,835 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 173 flow [2024-06-27 22:00:04,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 22:00:04,836 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 22:00:04,836 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 173 flow [2024-06-27 22:00:04,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:04,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:04,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:00:04,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:04,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 903386637, now seen corresponding path program 1 times [2024-06-27 22:00:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894472497] [2024-06-27 22:00:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894472497] [2024-06-27 22:00:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894472497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:05,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:00:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947262746] [2024-06-27 22:00:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:00:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:00:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:00:05,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:05,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:05,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:05,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:05,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:05,941 INFO L124 PetriNetUnfolderBase]: 505/1029 cut-off events. [2024-06-27 22:00:05,941 INFO L125 PetriNetUnfolderBase]: For 780/786 co-relation queries the response was YES. [2024-06-27 22:00:05,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1029 events. 505/1029 cut-off events. For 780/786 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5871 event pairs, 208 based on Foata normal form. 7/975 useless extension candidates. Maximal degree in co-relation 2500. Up to 842 conditions per place. [2024-06-27 22:00:05,947 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 38 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-27 22:00:05,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 321 flow [2024-06-27 22:00:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:00:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:00:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 22:00:05,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:00:05,949 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 173 flow. Second operand 6 states and 108 transitions. [2024-06-27 22:00:05,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 321 flow [2024-06-27 22:00:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 294 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:05,953 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 225 flow [2024-06-27 22:00:05,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 22:00:05,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 22:00:05,957 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 225 flow [2024-06-27 22:00:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:05,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:05,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:05,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:00:05,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:05,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1911752464, now seen corresponding path program 1 times [2024-06-27 22:00:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:05,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831958411] [2024-06-27 22:00:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831958411] [2024-06-27 22:00:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831958411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:07,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:07,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704240981] [2024-06-27 22:00:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:07,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:07,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:00:07,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:07,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:07,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:00:07,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:07,979 INFO L124 PetriNetUnfolderBase]: 458/810 cut-off events. [2024-06-27 22:00:07,979 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-27 22:00:07,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 810 events. 458/810 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4020 event pairs, 41 based on Foata normal form. 4/804 useless extension candidates. Maximal degree in co-relation 2221. Up to 670 conditions per place. [2024-06-27 22:00:07,983 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 55 selfloop transitions, 13 changer transitions 6/84 dead transitions. [2024-06-27 22:00:07,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 84 transitions, 447 flow [2024-06-27 22:00:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 22:00:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984555984555985 [2024-06-27 22:00:07,985 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 225 flow. Second operand 7 states and 155 transitions. [2024-06-27 22:00:07,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 84 transitions, 447 flow [2024-06-27 22:00:07,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 443 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:07,988 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 229 flow [2024-06-27 22:00:07,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=7, PETRI_FLOW=229, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 22:00:07,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 22:00:07,989 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 229 flow [2024-06-27 22:00:07,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:07,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:07,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:00:07,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:07,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2048165201, now seen corresponding path program 1 times [2024-06-27 22:00:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897525652] [2024-06-27 22:00:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:09,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897525652] [2024-06-27 22:00:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897525652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:09,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:09,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:00:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163169224] [2024-06-27 22:00:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:00:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:00:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:00:09,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:09,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:09,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:09,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:09,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:09,414 INFO L124 PetriNetUnfolderBase]: 412/866 cut-off events. [2024-06-27 22:00:09,414 INFO L125 PetriNetUnfolderBase]: For 1227/1229 co-relation queries the response was YES. [2024-06-27 22:00:09,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 866 events. 412/866 cut-off events. For 1227/1229 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4819 event pairs, 142 based on Foata normal form. 3/832 useless extension candidates. Maximal degree in co-relation 2280. Up to 681 conditions per place. [2024-06-27 22:00:09,418 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 38 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-27 22:00:09,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 367 flow [2024-06-27 22:00:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:00:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:00:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 22:00:09,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:00:09,420 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 229 flow. Second operand 6 states and 111 transitions. [2024-06-27 22:00:09,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 367 flow [2024-06-27 22:00:09,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 335 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:09,423 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 247 flow [2024-06-27 22:00:09,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-27 22:00:09,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 22:00:09,424 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 247 flow [2024-06-27 22:00:09,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:09,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:09,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:09,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:00:09,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:09,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash 564510764, now seen corresponding path program 1 times [2024-06-27 22:00:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630697516] [2024-06-27 22:00:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630697516] [2024-06-27 22:00:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630697516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:10,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:10,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:00:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651337452] [2024-06-27 22:00:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:10,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:00:10,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:00:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:00:10,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:10,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:10,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:10,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:10,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:10,502 INFO L124 PetriNetUnfolderBase]: 473/968 cut-off events. [2024-06-27 22:00:10,503 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2024-06-27 22:00:10,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 968 events. 473/968 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5254 event pairs, 138 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 2612. Up to 756 conditions per place. [2024-06-27 22:00:10,508 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-27 22:00:10,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 461 flow [2024-06-27 22:00:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:00:10,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:00:10,509 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 247 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:00:10,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 461 flow [2024-06-27 22:00:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 433 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:10,512 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 331 flow [2024-06-27 22:00:10,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-27 22:00:10,513 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-27 22:00:10,513 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 331 flow [2024-06-27 22:00:10,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:10,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:10,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:10,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:00:10,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:10,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash 571206764, now seen corresponding path program 2 times [2024-06-27 22:00:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750274233] [2024-06-27 22:00:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750274233] [2024-06-27 22:00:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750274233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:11,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:00:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384796774] [2024-06-27 22:00:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:11,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:00:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:00:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:00:11,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:11,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:11,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:11,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:11,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:11,682 INFO L124 PetriNetUnfolderBase]: 481/982 cut-off events. [2024-06-27 22:00:11,682 INFO L125 PetriNetUnfolderBase]: For 1958/1958 co-relation queries the response was YES. [2024-06-27 22:00:11,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 982 events. 481/982 cut-off events. For 1958/1958 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5320 event pairs, 142 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 2836. Up to 746 conditions per place. [2024-06-27 22:00:11,687 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 46 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2024-06-27 22:00:11,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 555 flow [2024-06-27 22:00:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 22:00:11,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 22:00:11,692 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 331 flow. Second operand 7 states and 120 transitions. [2024-06-27 22:00:11,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 555 flow [2024-06-27 22:00:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 537 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:11,696 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 415 flow [2024-06-27 22:00:11,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-27 22:00:11,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-27 22:00:11,697 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 415 flow [2024-06-27 22:00:11,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:11,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:11,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:11,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:00:11,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:11,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -77385556, now seen corresponding path program 3 times [2024-06-27 22:00:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164696680] [2024-06-27 22:00:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:12,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164696680] [2024-06-27 22:00:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164696680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:00:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577910083] [2024-06-27 22:00:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:00:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:00:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:00:12,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:12,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:12,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:12,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:12,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:12,686 INFO L124 PetriNetUnfolderBase]: 487/990 cut-off events. [2024-06-27 22:00:12,686 INFO L125 PetriNetUnfolderBase]: For 2526/2526 co-relation queries the response was YES. [2024-06-27 22:00:12,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 990 events. 487/990 cut-off events. For 2526/2526 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5348 event pairs, 137 based on Foata normal form. 1/947 useless extension candidates. Maximal degree in co-relation 3068. Up to 773 conditions per place. [2024-06-27 22:00:12,691 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 58 selfloop transitions, 24 changer transitions 0/90 dead transitions. [2024-06-27 22:00:12,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 665 flow [2024-06-27 22:00:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 22:00:12,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-27 22:00:12,693 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 415 flow. Second operand 7 states and 125 transitions. [2024-06-27 22:00:12,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 665 flow [2024-06-27 22:00:12,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 628 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:12,700 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 500 flow [2024-06-27 22:00:12,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=500, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-06-27 22:00:12,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-27 22:00:12,702 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 500 flow [2024-06-27 22:00:12,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:12,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:00:12,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:12,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash 571216684, now seen corresponding path program 1 times [2024-06-27 22:00:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:12,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90798920] [2024-06-27 22:00:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:14,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90798920] [2024-06-27 22:00:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90798920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:14,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552628308] [2024-06-27 22:00:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:14,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:14,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 500 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:14,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:14,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:14,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:15,196 INFO L124 PetriNetUnfolderBase]: 447/950 cut-off events. [2024-06-27 22:00:15,196 INFO L125 PetriNetUnfolderBase]: For 2720/2720 co-relation queries the response was YES. [2024-06-27 22:00:15,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 950 events. 447/950 cut-off events. For 2720/2720 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5341 event pairs, 138 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 2967. Up to 706 conditions per place. [2024-06-27 22:00:15,202 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 57 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-27 22:00:15,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 704 flow [2024-06-27 22:00:15,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:00:15,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:00:15,203 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 500 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:00:15,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 704 flow [2024-06-27 22:00:15,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 91 transitions, 653 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:15,208 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 513 flow [2024-06-27 22:00:15,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-27 22:00:15,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-27 22:00:15,209 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 513 flow [2024-06-27 22:00:15,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:15,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:15,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:15,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:00:15,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:15,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1316779002, now seen corresponding path program 1 times [2024-06-27 22:00:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:15,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881818405] [2024-06-27 22:00:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:15,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881818405] [2024-06-27 22:00:15,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881818405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:15,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:15,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:15,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355867544] [2024-06-27 22:00:15,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:15,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:16,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:16,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:16,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:16,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:16,362 INFO L124 PetriNetUnfolderBase]: 502/1015 cut-off events. [2024-06-27 22:00:16,362 INFO L125 PetriNetUnfolderBase]: For 3398/3398 co-relation queries the response was YES. [2024-06-27 22:00:16,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3440 conditions, 1015 events. 502/1015 cut-off events. For 3398/3398 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5514 event pairs, 129 based on Foata normal form. 1/970 useless extension candidates. Maximal degree in co-relation 3407. Up to 775 conditions per place. [2024-06-27 22:00:16,368 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-27 22:00:16,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 103 transitions, 823 flow [2024-06-27 22:00:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 22:00:16,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 22:00:16,370 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 513 flow. Second operand 7 states and 128 transitions. [2024-06-27 22:00:16,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 103 transitions, 823 flow [2024-06-27 22:00:16,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 781 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:00:16,376 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 624 flow [2024-06-27 22:00:16,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-06-27 22:00:16,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 22:00:16,377 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 624 flow [2024-06-27 22:00:16,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:16,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:16,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:00:16,377 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:16,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1316929910, now seen corresponding path program 1 times [2024-06-27 22:00:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:16,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967853686] [2024-06-27 22:00:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:17,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967853686] [2024-06-27 22:00:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967853686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:17,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523124991] [2024-06-27 22:00:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:17,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:17,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:17,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:17,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:17,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:18,097 INFO L124 PetriNetUnfolderBase]: 510/1025 cut-off events. [2024-06-27 22:00:18,098 INFO L125 PetriNetUnfolderBase]: For 4111/4111 co-relation queries the response was YES. [2024-06-27 22:00:18,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3661 conditions, 1025 events. 510/1025 cut-off events. For 4111/4111 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5556 event pairs, 125 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 3626. Up to 799 conditions per place. [2024-06-27 22:00:18,103 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 71 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2024-06-27 22:00:18,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 105 transitions, 882 flow [2024-06-27 22:00:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:00:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 22:00:18,105 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 624 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:00:18,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 105 transitions, 882 flow [2024-06-27 22:00:18,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 847 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:00:18,111 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 680 flow [2024-06-27 22:00:18,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=680, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-06-27 22:00:18,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-27 22:00:18,112 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 680 flow [2024-06-27 22:00:18,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:18,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:18,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:00:18,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:18,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1200265322, now seen corresponding path program 2 times [2024-06-27 22:00:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:18,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675261553] [2024-06-27 22:00:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:18,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675261553] [2024-06-27 22:00:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675261553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101365153] [2024-06-27 22:00:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:18,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:19,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:19,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 680 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:19,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:19,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:19,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:19,377 INFO L124 PetriNetUnfolderBase]: 537/1054 cut-off events. [2024-06-27 22:00:19,377 INFO L125 PetriNetUnfolderBase]: For 5160/5160 co-relation queries the response was YES. [2024-06-27 22:00:19,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4016 conditions, 1054 events. 537/1054 cut-off events. For 5160/5160 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5672 event pairs, 109 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 3977. Up to 779 conditions per place. [2024-06-27 22:00:19,383 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 72 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-06-27 22:00:19,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 1100 flow [2024-06-27 22:00:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:00:19,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 22:00:19,385 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 680 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:00:19,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 1100 flow [2024-06-27 22:00:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 1033 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:00:19,392 INFO L231 Difference]: Finished difference. Result has 89 places, 105 transitions, 862 flow [2024-06-27 22:00:19,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=89, PETRI_TRANSITIONS=105} [2024-06-27 22:00:19,393 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 22:00:19,393 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 105 transitions, 862 flow [2024-06-27 22:00:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:19,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:19,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:19,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:00:19,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:19,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 527838804, now seen corresponding path program 2 times [2024-06-27 22:00:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:19,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615327774] [2024-06-27 22:00:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615327774] [2024-06-27 22:00:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615327774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537485122] [2024-06-27 22:00:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:20,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:20,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 105 transitions, 862 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:20,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:20,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:20,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:20,954 INFO L124 PetriNetUnfolderBase]: 554/1086 cut-off events. [2024-06-27 22:00:20,954 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2024-06-27 22:00:20,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 1086 events. 554/1086 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5894 event pairs, 114 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 4367. Up to 811 conditions per place. [2024-06-27 22:00:20,961 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 82 selfloop transitions, 39 changer transitions 0/129 dead transitions. [2024-06-27 22:00:20,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 1254 flow [2024-06-27 22:00:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:00:20,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:00:20,962 INFO L175 Difference]: Start difference. First operand has 89 places, 105 transitions, 862 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:00:20,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 1254 flow [2024-06-27 22:00:20,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 129 transitions, 1212 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-27 22:00:20,973 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 964 flow [2024-06-27 22:00:20,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-06-27 22:00:20,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 22:00:20,974 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 964 flow [2024-06-27 22:00:20,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:20,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:20,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:20,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:00:20,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:20,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 527542134, now seen corresponding path program 3 times [2024-06-27 22:00:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:20,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986544536] [2024-06-27 22:00:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:22,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986544536] [2024-06-27 22:00:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986544536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:22,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965658968] [2024-06-27 22:00:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:22,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:22,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:22,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:22,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 964 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:22,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:22,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:22,456 INFO L124 PetriNetUnfolderBase]: 562/1098 cut-off events. [2024-06-27 22:00:22,456 INFO L125 PetriNetUnfolderBase]: For 7266/7266 co-relation queries the response was YES. [2024-06-27 22:00:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4734 conditions, 1098 events. 562/1098 cut-off events. For 7266/7266 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5964 event pairs, 114 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 4687. Up to 860 conditions per place. [2024-06-27 22:00:22,463 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 34 changer transitions 0/127 dead transitions. [2024-06-27 22:00:22,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 1280 flow [2024-06-27 22:00:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 22:00:22,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-27 22:00:22,465 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 964 flow. Second operand 7 states and 125 transitions. [2024-06-27 22:00:22,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 1280 flow [2024-06-27 22:00:22,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 1239 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:22,477 INFO L231 Difference]: Finished difference. Result has 101 places, 113 transitions, 1043 flow [2024-06-27 22:00:22,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1043, PETRI_PLACES=101, PETRI_TRANSITIONS=113} [2024-06-27 22:00:22,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 22:00:22,478 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 113 transitions, 1043 flow [2024-06-27 22:00:22,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:22,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:22,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:00:22,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:22,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:22,479 INFO L85 PathProgramCache]: Analyzing trace with hash 527541886, now seen corresponding path program 3 times [2024-06-27 22:00:22,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988065115] [2024-06-27 22:00:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988065115] [2024-06-27 22:00:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988065115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058206543] [2024-06-27 22:00:23,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:23,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:23,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:23,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 113 transitions, 1043 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:23,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:23,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:23,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:23,749 INFO L124 PetriNetUnfolderBase]: 580/1146 cut-off events. [2024-06-27 22:00:23,749 INFO L125 PetriNetUnfolderBase]: For 8669/8669 co-relation queries the response was YES. [2024-06-27 22:00:23,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 1146 events. 580/1146 cut-off events. For 8669/8669 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6285 event pairs, 131 based on Foata normal form. 1/1097 useless extension candidates. Maximal degree in co-relation 5014. Up to 797 conditions per place. [2024-06-27 22:00:23,756 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 74 selfloop transitions, 53 changer transitions 0/135 dead transitions. [2024-06-27 22:00:23,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 1455 flow [2024-06-27 22:00:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:00:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:00:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:00:23,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 22:00:23,758 INFO L175 Difference]: Start difference. First operand has 101 places, 113 transitions, 1043 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:00:23,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 1455 flow [2024-06-27 22:00:23,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 1363 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:23,773 INFO L231 Difference]: Finished difference. Result has 104 places, 120 transitions, 1187 flow [2024-06-27 22:00:23,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1187, PETRI_PLACES=104, PETRI_TRANSITIONS=120} [2024-06-27 22:00:23,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-27 22:00:23,775 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 120 transitions, 1187 flow [2024-06-27 22:00:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:23,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:23,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:00:23,775 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:23,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1064460014, now seen corresponding path program 4 times [2024-06-27 22:00:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602831544] [2024-06-27 22:00:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602831544] [2024-06-27 22:00:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602831544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081924187] [2024-06-27 22:00:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:24,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:24,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:24,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 120 transitions, 1187 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:24,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:24,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:24,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:24,882 INFO L124 PetriNetUnfolderBase]: 630/1227 cut-off events. [2024-06-27 22:00:24,882 INFO L125 PetriNetUnfolderBase]: For 10174/10174 co-relation queries the response was YES. [2024-06-27 22:00:24,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1227 events. 630/1227 cut-off events. For 10174/10174 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6744 event pairs, 113 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 5763. Up to 918 conditions per place. [2024-06-27 22:00:24,891 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 106 selfloop transitions, 50 changer transitions 0/164 dead transitions. [2024-06-27 22:00:24,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 1833 flow [2024-06-27 22:00:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:00:24,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:00:24,893 INFO L175 Difference]: Start difference. First operand has 104 places, 120 transitions, 1187 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:00:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 1833 flow [2024-06-27 22:00:24,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 164 transitions, 1753 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:24,912 INFO L231 Difference]: Finished difference. Result has 110 places, 141 transitions, 1523 flow [2024-06-27 22:00:24,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1523, PETRI_PLACES=110, PETRI_TRANSITIONS=141} [2024-06-27 22:00:24,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-27 22:00:24,913 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 141 transitions, 1523 flow [2024-06-27 22:00:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:24,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:00:24,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -918672152, now seen corresponding path program 5 times [2024-06-27 22:00:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107996189] [2024-06-27 22:00:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107996189] [2024-06-27 22:00:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107996189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:25,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554872375] [2024-06-27 22:00:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:25,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:25,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 141 transitions, 1523 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:25,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:25,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:26,040 INFO L124 PetriNetUnfolderBase]: 654/1264 cut-off events. [2024-06-27 22:00:26,040 INFO L125 PetriNetUnfolderBase]: For 11284/11284 co-relation queries the response was YES. [2024-06-27 22:00:26,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6322 conditions, 1264 events. 654/1264 cut-off events. For 11284/11284 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6900 event pairs, 120 based on Foata normal form. 1/1220 useless extension candidates. Maximal degree in co-relation 6268. Up to 993 conditions per place. [2024-06-27 22:00:26,053 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 125 selfloop transitions, 45 changer transitions 0/178 dead transitions. [2024-06-27 22:00:26,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 178 transitions, 2170 flow [2024-06-27 22:00:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:00:26,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:00:26,055 INFO L175 Difference]: Start difference. First operand has 110 places, 141 transitions, 1523 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:00:26,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 178 transitions, 2170 flow [2024-06-27 22:00:26,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 178 transitions, 1969 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:26,077 INFO L231 Difference]: Finished difference. Result has 114 places, 158 transitions, 1702 flow [2024-06-27 22:00:26,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1702, PETRI_PLACES=114, PETRI_TRANSITIONS=158} [2024-06-27 22:00:26,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 22:00:26,078 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 158 transitions, 1702 flow [2024-06-27 22:00:26,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:26,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:26,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:26,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:00:26,079 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:26,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash -930283884, now seen corresponding path program 4 times [2024-06-27 22:00:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:26,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704504515] [2024-06-27 22:00:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:27,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704504515] [2024-06-27 22:00:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704504515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:27,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840327548] [2024-06-27 22:00:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:27,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:27,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:27,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 158 transitions, 1702 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:27,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:27,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:27,588 INFO L124 PetriNetUnfolderBase]: 656/1268 cut-off events. [2024-06-27 22:00:27,588 INFO L125 PetriNetUnfolderBase]: For 11736/11736 co-relation queries the response was YES. [2024-06-27 22:00:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 1268 events. 656/1268 cut-off events. For 11736/11736 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6960 event pairs, 126 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 6252. Up to 1020 conditions per place. [2024-06-27 22:00:27,596 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 145 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-27 22:00:27,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 2178 flow [2024-06-27 22:00:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:00:27,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:00:27,599 INFO L175 Difference]: Start difference. First operand has 114 places, 158 transitions, 1702 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:00:27,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 2178 flow [2024-06-27 22:00:27,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 183 transitions, 2102 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:27,623 INFO L231 Difference]: Finished difference. Result has 119 places, 164 transitions, 1774 flow [2024-06-27 22:00:27,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1774, PETRI_PLACES=119, PETRI_TRANSITIONS=164} [2024-06-27 22:00:27,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-27 22:00:27,624 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 164 transitions, 1774 flow [2024-06-27 22:00:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:27,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:00:27,625 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:27,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash -930284132, now seen corresponding path program 6 times [2024-06-27 22:00:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037672765] [2024-06-27 22:00:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:27,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037672765] [2024-06-27 22:00:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037672765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:28,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:00:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732765857] [2024-06-27 22:00:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:00:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:00:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:00:28,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:28,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 164 transitions, 1774 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:28,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:28,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:28,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:28,789 INFO L124 PetriNetUnfolderBase]: 658/1271 cut-off events. [2024-06-27 22:00:28,789 INFO L125 PetriNetUnfolderBase]: For 12364/12364 co-relation queries the response was YES. [2024-06-27 22:00:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 1271 events. 658/1271 cut-off events. For 12364/12364 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6987 event pairs, 122 based on Foata normal form. 1/1226 useless extension candidates. Maximal degree in co-relation 6287. Up to 969 conditions per place. [2024-06-27 22:00:28,796 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 122 selfloop transitions, 61 changer transitions 0/191 dead transitions. [2024-06-27 22:00:28,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 191 transitions, 2303 flow [2024-06-27 22:00:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:00:28,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:00:28,797 INFO L175 Difference]: Start difference. First operand has 119 places, 164 transitions, 1774 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:00:28,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 191 transitions, 2303 flow [2024-06-27 22:00:28,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 191 transitions, 2225 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:00:28,820 INFO L231 Difference]: Finished difference. Result has 122 places, 171 transitions, 1966 flow [2024-06-27 22:00:28,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1966, PETRI_PLACES=122, PETRI_TRANSITIONS=171} [2024-06-27 22:00:28,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-27 22:00:28,821 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 171 transitions, 1966 flow [2024-06-27 22:00:28,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:28,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:28,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:00:28,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:28,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 527849716, now seen corresponding path program 1 times [2024-06-27 22:00:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207461603] [2024-06-27 22:00:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:28,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:31,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207461603] [2024-06-27 22:00:31,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207461603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:31,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:31,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271451399] [2024-06-27 22:00:31,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:31,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:31,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:31,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 171 transitions, 1966 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:31,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:31,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:32,123 INFO L124 PetriNetUnfolderBase]: 623/1233 cut-off events. [2024-06-27 22:00:32,123 INFO L125 PetriNetUnfolderBase]: For 13472/13489 co-relation queries the response was YES. [2024-06-27 22:00:32,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6209 conditions, 1233 events. 623/1233 cut-off events. For 13472/13489 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6970 event pairs, 138 based on Foata normal form. 12/1196 useless extension candidates. Maximal degree in co-relation 6151. Up to 934 conditions per place. [2024-06-27 22:00:32,130 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 150 selfloop transitions, 21 changer transitions 0/195 dead transitions. [2024-06-27 22:00:32,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 195 transitions, 2425 flow [2024-06-27 22:00:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:00:32,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:00:32,132 INFO L175 Difference]: Start difference. First operand has 122 places, 171 transitions, 1966 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:00:32,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 195 transitions, 2425 flow [2024-06-27 22:00:32,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 195 transitions, 2295 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:32,155 INFO L231 Difference]: Finished difference. Result has 127 places, 177 transitions, 1937 flow [2024-06-27 22:00:32,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=127, PETRI_TRANSITIONS=177} [2024-06-27 22:00:32,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 22:00:32,156 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 177 transitions, 1937 flow [2024-06-27 22:00:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:32,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:32,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:32,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:00:32,156 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:32,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1324217931, now seen corresponding path program 1 times [2024-06-27 22:00:32,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:32,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558714935] [2024-06-27 22:00:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:32,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:33,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:33,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558714935] [2024-06-27 22:00:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558714935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:33,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413652611] [2024-06-27 22:00:33,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:33,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:33,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 177 transitions, 1937 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:33,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:33,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:33,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:33,590 INFO L124 PetriNetUnfolderBase]: 661/1276 cut-off events. [2024-06-27 22:00:33,590 INFO L125 PetriNetUnfolderBase]: For 13164/13164 co-relation queries the response was YES. [2024-06-27 22:00:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 1276 events. 661/1276 cut-off events. For 13164/13164 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7024 event pairs, 120 based on Foata normal form. 1/1228 useless extension candidates. Maximal degree in co-relation 6480. Up to 969 conditions per place. [2024-06-27 22:00:33,598 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 136 selfloop transitions, 51 changer transitions 0/195 dead transitions. [2024-06-27 22:00:33,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 195 transitions, 2372 flow [2024-06-27 22:00:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:00:33,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:00:33,613 INFO L175 Difference]: Start difference. First operand has 127 places, 177 transitions, 1937 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:00:33,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 195 transitions, 2372 flow [2024-06-27 22:00:33,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 195 transitions, 2325 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:33,644 INFO L231 Difference]: Finished difference. Result has 130 places, 177 transitions, 2002 flow [2024-06-27 22:00:33,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2002, PETRI_PLACES=130, PETRI_TRANSITIONS=177} [2024-06-27 22:00:33,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 22:00:33,645 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 177 transitions, 2002 flow [2024-06-27 22:00:33,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:33,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:33,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:33,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:00:33,646 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:33,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1324338831, now seen corresponding path program 2 times [2024-06-27 22:00:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337257874] [2024-06-27 22:00:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:34,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337257874] [2024-06-27 22:00:34,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337257874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:34,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294172495] [2024-06-27 22:00:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:34,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:34,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:34,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:34,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 177 transitions, 2002 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:34,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:34,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:34,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:35,381 INFO L124 PetriNetUnfolderBase]: 672/1301 cut-off events. [2024-06-27 22:00:35,382 INFO L125 PetriNetUnfolderBase]: For 14203/14203 co-relation queries the response was YES. [2024-06-27 22:00:35,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1301 events. 672/1301 cut-off events. For 14203/14203 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7241 event pairs, 120 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 6672. Up to 960 conditions per place. [2024-06-27 22:00:35,390 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 131 selfloop transitions, 62 changer transitions 0/201 dead transitions. [2024-06-27 22:00:35,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 201 transitions, 2519 flow [2024-06-27 22:00:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:00:35,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:00:35,391 INFO L175 Difference]: Start difference. First operand has 130 places, 177 transitions, 2002 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:00:35,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 201 transitions, 2519 flow [2024-06-27 22:00:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 201 transitions, 2371 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:00:35,427 INFO L231 Difference]: Finished difference. Result has 132 places, 182 transitions, 2056 flow [2024-06-27 22:00:35,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2056, PETRI_PLACES=132, PETRI_TRANSITIONS=182} [2024-06-27 22:00:35,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-27 22:00:35,428 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 182 transitions, 2056 flow [2024-06-27 22:00:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:35,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:35,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:00:35,428 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:35,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1324339048, now seen corresponding path program 1 times [2024-06-27 22:00:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870669993] [2024-06-27 22:00:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870669993] [2024-06-27 22:00:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870669993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092957527] [2024-06-27 22:00:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:36,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:36,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 182 transitions, 2056 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:36,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:36,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:36,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:36,939 INFO L124 PetriNetUnfolderBase]: 694/1335 cut-off events. [2024-06-27 22:00:36,939 INFO L125 PetriNetUnfolderBase]: For 16260/16260 co-relation queries the response was YES. [2024-06-27 22:00:36,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 1335 events. 694/1335 cut-off events. For 16260/16260 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7434 event pairs, 120 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 6984. Up to 983 conditions per place. [2024-06-27 22:00:36,947 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 137 selfloop transitions, 60 changer transitions 0/205 dead transitions. [2024-06-27 22:00:36,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 205 transitions, 2569 flow [2024-06-27 22:00:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:00:36,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:00:36,948 INFO L175 Difference]: Start difference. First operand has 132 places, 182 transitions, 2056 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:00:36,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 205 transitions, 2569 flow [2024-06-27 22:00:36,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 205 transitions, 2459 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:36,981 INFO L231 Difference]: Finished difference. Result has 136 places, 185 transitions, 2108 flow [2024-06-27 22:00:36,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2108, PETRI_PLACES=136, PETRI_TRANSITIONS=185} [2024-06-27 22:00:36,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-27 22:00:36,982 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 185 transitions, 2108 flow [2024-06-27 22:00:36,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:36,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:36,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:36,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:00:36,982 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:36,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:36,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1329016948, now seen corresponding path program 2 times [2024-06-27 22:00:36,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:36,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126405912] [2024-06-27 22:00:36,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:36,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126405912] [2024-06-27 22:00:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126405912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:38,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871321468] [2024-06-27 22:00:38,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:38,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:38,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:38,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:38,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 185 transitions, 2108 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:38,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:38,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:38,792 INFO L124 PetriNetUnfolderBase]: 712/1366 cut-off events. [2024-06-27 22:00:38,792 INFO L125 PetriNetUnfolderBase]: For 17572/17572 co-relation queries the response was YES. [2024-06-27 22:00:38,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 1366 events. 712/1366 cut-off events. For 17572/17572 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7633 event pairs, 121 based on Foata normal form. 1/1317 useless extension candidates. Maximal degree in co-relation 7413. Up to 965 conditions per place. [2024-06-27 22:00:38,801 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 125 selfloop transitions, 80 changer transitions 0/213 dead transitions. [2024-06-27 22:00:38,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 213 transitions, 2770 flow [2024-06-27 22:00:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:00:38,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:00:38,803 INFO L175 Difference]: Start difference. First operand has 136 places, 185 transitions, 2108 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:00:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 213 transitions, 2770 flow [2024-06-27 22:00:38,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 213 transitions, 2627 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:00:38,839 INFO L231 Difference]: Finished difference. Result has 139 places, 194 transitions, 2296 flow [2024-06-27 22:00:38,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2296, PETRI_PLACES=139, PETRI_TRANSITIONS=194} [2024-06-27 22:00:38,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-27 22:00:38,840 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 194 transitions, 2296 flow [2024-06-27 22:00:38,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:38,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:38,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:38,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:00:38,840 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:38,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844085, now seen corresponding path program 1 times [2024-06-27 22:00:38,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:38,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044328075] [2024-06-27 22:00:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:40,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044328075] [2024-06-27 22:00:40,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044328075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:40,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:40,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34098344] [2024-06-27 22:00:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:40,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:40,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:40,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:40,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:40,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 194 transitions, 2296 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:40,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:40,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:40,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:40,515 INFO L124 PetriNetUnfolderBase]: 682/1347 cut-off events. [2024-06-27 22:00:40,515 INFO L125 PetriNetUnfolderBase]: For 18737/18739 co-relation queries the response was YES. [2024-06-27 22:00:40,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 1347 events. 682/1347 cut-off events. For 18737/18739 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7820 event pairs, 127 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 7270. Up to 1023 conditions per place. [2024-06-27 22:00:40,524 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 171 selfloop transitions, 36 changer transitions 0/220 dead transitions. [2024-06-27 22:00:40,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 220 transitions, 2868 flow [2024-06-27 22:00:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:00:40,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 22:00:40,525 INFO L175 Difference]: Start difference. First operand has 139 places, 194 transitions, 2296 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:00:40,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 220 transitions, 2868 flow [2024-06-27 22:00:40,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 220 transitions, 2732 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:40,572 INFO L231 Difference]: Finished difference. Result has 145 places, 202 transitions, 2370 flow [2024-06-27 22:00:40,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2370, PETRI_PLACES=145, PETRI_TRANSITIONS=202} [2024-06-27 22:00:40,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 22:00:40,572 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 202 transitions, 2370 flow [2024-06-27 22:00:40,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:40,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:40,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:00:40,573 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:40,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2124852021, now seen corresponding path program 3 times [2024-06-27 22:00:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779828071] [2024-06-27 22:00:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779828071] [2024-06-27 22:00:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779828071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296446942] [2024-06-27 22:00:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:41,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:41,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:41,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 202 transitions, 2370 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:41,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:41,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:41,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:42,433 INFO L124 PetriNetUnfolderBase]: 740/1414 cut-off events. [2024-06-27 22:00:42,433 INFO L125 PetriNetUnfolderBase]: For 20062/20062 co-relation queries the response was YES. [2024-06-27 22:00:42,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8186 conditions, 1414 events. 740/1414 cut-off events. For 20062/20062 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7933 event pairs, 119 based on Foata normal form. 1/1364 useless extension candidates. Maximal degree in co-relation 8117. Up to 1038 conditions per place. [2024-06-27 22:00:42,441 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 145 selfloop transitions, 70 changer transitions 0/223 dead transitions. [2024-06-27 22:00:42,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 223 transitions, 2925 flow [2024-06-27 22:00:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:00:42,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:00:42,443 INFO L175 Difference]: Start difference. First operand has 145 places, 202 transitions, 2370 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:00:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 223 transitions, 2925 flow [2024-06-27 22:00:42,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 223 transitions, 2872 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:42,486 INFO L231 Difference]: Finished difference. Result has 151 places, 205 transitions, 2526 flow [2024-06-27 22:00:42,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2526, PETRI_PLACES=151, PETRI_TRANSITIONS=205} [2024-06-27 22:00:42,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 22:00:42,487 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 205 transitions, 2526 flow [2024-06-27 22:00:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:42,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:42,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:42,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:00:42,487 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:42,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1329009508, now seen corresponding path program 3 times [2024-06-27 22:00:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095379405] [2024-06-27 22:00:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:43,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095379405] [2024-06-27 22:00:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095379405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:43,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:43,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843985618] [2024-06-27 22:00:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:43,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:43,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 205 transitions, 2526 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:43,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:43,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:43,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:44,098 INFO L124 PetriNetUnfolderBase]: 738/1411 cut-off events. [2024-06-27 22:00:44,098 INFO L125 PetriNetUnfolderBase]: For 21327/21327 co-relation queries the response was YES. [2024-06-27 22:00:44,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8391 conditions, 1411 events. 738/1411 cut-off events. For 21327/21327 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7909 event pairs, 119 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 8320. Up to 1046 conditions per place. [2024-06-27 22:00:44,106 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 146 selfloop transitions, 70 changer transitions 0/224 dead transitions. [2024-06-27 22:00:44,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 224 transitions, 3044 flow [2024-06-27 22:00:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:00:44,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:00:44,108 INFO L175 Difference]: Start difference. First operand has 151 places, 205 transitions, 2526 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:00:44,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 224 transitions, 3044 flow [2024-06-27 22:00:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 224 transitions, 2833 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 22:00:44,157 INFO L231 Difference]: Finished difference. Result has 153 places, 206 transitions, 2481 flow [2024-06-27 22:00:44,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2481, PETRI_PLACES=153, PETRI_TRANSITIONS=206} [2024-06-27 22:00:44,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 22:00:44,158 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 206 transitions, 2481 flow [2024-06-27 22:00:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:44,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:44,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:00:44,158 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:44,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:44,159 INFO L85 PathProgramCache]: Analyzing trace with hash -816864595, now seen corresponding path program 2 times [2024-06-27 22:00:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:44,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954166470] [2024-06-27 22:00:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:45,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954166470] [2024-06-27 22:00:45,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954166470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:45,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:45,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755207464] [2024-06-27 22:00:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:45,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:45,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 206 transitions, 2481 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:45,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:45,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:45,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:46,055 INFO L124 PetriNetUnfolderBase]: 745/1458 cut-off events. [2024-06-27 22:00:46,056 INFO L125 PetriNetUnfolderBase]: For 24203/24205 co-relation queries the response was YES. [2024-06-27 22:00:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 1458 events. 745/1458 cut-off events. For 24203/24205 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8638 event pairs, 132 based on Foata normal form. 2/1402 useless extension candidates. Maximal degree in co-relation 8258. Up to 995 conditions per place. [2024-06-27 22:00:46,064 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 175 selfloop transitions, 50 changer transitions 0/238 dead transitions. [2024-06-27 22:00:46,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 238 transitions, 3275 flow [2024-06-27 22:00:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:00:46,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:00:46,065 INFO L175 Difference]: Start difference. First operand has 153 places, 206 transitions, 2481 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:00:46,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 238 transitions, 3275 flow [2024-06-27 22:00:46,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 238 transitions, 3126 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:00:46,105 INFO L231 Difference]: Finished difference. Result has 155 places, 214 transitions, 2543 flow [2024-06-27 22:00:46,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2543, PETRI_PLACES=155, PETRI_TRANSITIONS=214} [2024-06-27 22:00:46,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 22:00:46,106 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 214 transitions, 2543 flow [2024-06-27 22:00:46,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:46,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:46,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:46,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:00:46,107 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:46,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -816864874, now seen corresponding path program 4 times [2024-06-27 22:00:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101007014] [2024-06-27 22:00:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101007014] [2024-06-27 22:00:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101007014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:47,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417868055] [2024-06-27 22:00:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:47,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:47,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:47,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 214 transitions, 2543 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:47,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:47,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:47,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:48,107 INFO L124 PetriNetUnfolderBase]: 819/1558 cut-off events. [2024-06-27 22:00:48,107 INFO L125 PetriNetUnfolderBase]: For 25955/25955 co-relation queries the response was YES. [2024-06-27 22:00:48,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9402 conditions, 1558 events. 819/1558 cut-off events. For 25955/25955 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8941 event pairs, 136 based on Foata normal form. 1/1502 useless extension candidates. Maximal degree in co-relation 9328. Up to 985 conditions per place. [2024-06-27 22:00:48,117 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 110 selfloop transitions, 125 changer transitions 0/243 dead transitions. [2024-06-27 22:00:48,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 243 transitions, 3384 flow [2024-06-27 22:00:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:00:48,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:00:48,118 INFO L175 Difference]: Start difference. First operand has 155 places, 214 transitions, 2543 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:00:48,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 243 transitions, 3384 flow [2024-06-27 22:00:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 243 transitions, 3337 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:00:48,170 INFO L231 Difference]: Finished difference. Result has 163 places, 224 transitions, 2997 flow [2024-06-27 22:00:48,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2997, PETRI_PLACES=163, PETRI_TRANSITIONS=224} [2024-06-27 22:00:48,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 22:00:48,171 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 224 transitions, 2997 flow [2024-06-27 22:00:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:48,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:48,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:00:48,171 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash -816538165, now seen corresponding path program 3 times [2024-06-27 22:00:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331709945] [2024-06-27 22:00:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:50,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331709945] [2024-06-27 22:00:50,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331709945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:50,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:50,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132509659] [2024-06-27 22:00:50,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:50,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:50,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:50,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 224 transitions, 2997 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:50,827 INFO L124 PetriNetUnfolderBase]: 817/1563 cut-off events. [2024-06-27 22:00:50,827 INFO L125 PetriNetUnfolderBase]: For 28384/28384 co-relation queries the response was YES. [2024-06-27 22:00:50,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9869 conditions, 1563 events. 817/1563 cut-off events. For 28384/28384 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9027 event pairs, 155 based on Foata normal form. 1/1511 useless extension candidates. Maximal degree in co-relation 9791. Up to 1277 conditions per place. [2024-06-27 22:00:50,837 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 213 selfloop transitions, 22 changer transitions 0/243 dead transitions. [2024-06-27 22:00:50,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 243 transitions, 3577 flow [2024-06-27 22:00:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:00:50,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:00:50,839 INFO L175 Difference]: Start difference. First operand has 163 places, 224 transitions, 2997 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:00:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 243 transitions, 3577 flow [2024-06-27 22:00:50,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 243 transitions, 3361 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:50,903 INFO L231 Difference]: Finished difference. Result has 168 places, 227 transitions, 2889 flow [2024-06-27 22:00:50,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2889, PETRI_PLACES=168, PETRI_TRANSITIONS=227} [2024-06-27 22:00:50,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 22:00:50,904 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 227 transitions, 2889 flow [2024-06-27 22:00:50,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:50,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:50,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:00:50,905 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:50,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash -826061365, now seen corresponding path program 4 times [2024-06-27 22:00:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129679128] [2024-06-27 22:00:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:52,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:52,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129679128] [2024-06-27 22:00:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129679128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:52,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131971047] [2024-06-27 22:00:52,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:52,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:52,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:52,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:00:52,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 227 transitions, 2889 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:52,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:52,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:00:52,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:52,932 INFO L124 PetriNetUnfolderBase]: 757/1484 cut-off events. [2024-06-27 22:00:52,932 INFO L125 PetriNetUnfolderBase]: For 27996/27998 co-relation queries the response was YES. [2024-06-27 22:00:52,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1484 events. 757/1484 cut-off events. For 27996/27998 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8818 event pairs, 143 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 9074. Up to 1154 conditions per place. [2024-06-27 22:00:52,940 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 197 selfloop transitions, 35 changer transitions 0/245 dead transitions. [2024-06-27 22:00:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 245 transitions, 3457 flow [2024-06-27 22:00:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:00:52,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:00:52,941 INFO L175 Difference]: Start difference. First operand has 168 places, 227 transitions, 2889 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:00:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 245 transitions, 3457 flow [2024-06-27 22:00:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 245 transitions, 3365 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:00:53,002 INFO L231 Difference]: Finished difference. Result has 170 places, 230 transitions, 2924 flow [2024-06-27 22:00:53,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2924, PETRI_PLACES=170, PETRI_TRANSITIONS=230} [2024-06-27 22:00:53,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-27 22:00:53,003 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 230 transitions, 2924 flow [2024-06-27 22:00:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:53,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:53,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:53,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:00:53,003 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:53,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -826061644, now seen corresponding path program 5 times [2024-06-27 22:00:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234831804] [2024-06-27 22:00:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:54,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234831804] [2024-06-27 22:00:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234831804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:54,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:54,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:00:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544536967] [2024-06-27 22:00:54,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:00:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:00:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:00:54,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:54,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 230 transitions, 2924 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:54,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:54,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:54,898 INFO L124 PetriNetUnfolderBase]: 833/1579 cut-off events. [2024-06-27 22:00:54,898 INFO L125 PetriNetUnfolderBase]: For 30369/30369 co-relation queries the response was YES. [2024-06-27 22:00:54,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10185 conditions, 1579 events. 833/1579 cut-off events. For 30369/30369 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9027 event pairs, 140 based on Foata normal form. 1/1523 useless extension candidates. Maximal degree in co-relation 10103. Up to 1113 conditions per place. [2024-06-27 22:00:54,909 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 146 selfloop transitions, 101 changer transitions 0/255 dead transitions. [2024-06-27 22:00:54,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 255 transitions, 3726 flow [2024-06-27 22:00:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:00:54,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:00:54,910 INFO L175 Difference]: Start difference. First operand has 170 places, 230 transitions, 2924 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:00:54,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 255 transitions, 3726 flow [2024-06-27 22:00:54,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 255 transitions, 3641 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:00:54,984 INFO L231 Difference]: Finished difference. Result has 174 places, 236 transitions, 3159 flow [2024-06-27 22:00:54,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3159, PETRI_PLACES=174, PETRI_TRANSITIONS=236} [2024-06-27 22:00:54,984 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-27 22:00:54,984 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 236 transitions, 3159 flow [2024-06-27 22:00:54,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:54,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:54,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:00:54,985 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:54,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash -826069084, now seen corresponding path program 6 times [2024-06-27 22:00:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:54,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125628046] [2024-06-27 22:00:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:54,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125628046] [2024-06-27 22:00:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125628046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520863308] [2024-06-27 22:00:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:56,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:56,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:56,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 236 transitions, 3159 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:56,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:56,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:56,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:56,624 INFO L124 PetriNetUnfolderBase]: 834/1585 cut-off events. [2024-06-27 22:00:56,624 INFO L125 PetriNetUnfolderBase]: For 31154/31154 co-relation queries the response was YES. [2024-06-27 22:00:56,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 1585 events. 834/1585 cut-off events. For 31154/31154 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9110 event pairs, 140 based on Foata normal form. 1/1528 useless extension candidates. Maximal degree in co-relation 10262. Up to 1128 conditions per place. [2024-06-27 22:00:56,635 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 152 selfloop transitions, 97 changer transitions 0/257 dead transitions. [2024-06-27 22:00:56,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 257 transitions, 3827 flow [2024-06-27 22:00:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:00:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:00:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:00:56,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:00:56,636 INFO L175 Difference]: Start difference. First operand has 174 places, 236 transitions, 3159 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:00:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 257 transitions, 3827 flow [2024-06-27 22:00:56,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 257 transitions, 3705 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:00:56,715 INFO L231 Difference]: Finished difference. Result has 178 places, 238 transitions, 3274 flow [2024-06-27 22:00:56,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3274, PETRI_PLACES=178, PETRI_TRANSITIONS=238} [2024-06-27 22:00:56,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 22:00:56,716 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 238 transitions, 3274 flow [2024-06-27 22:00:56,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:56,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:56,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:00:56,717 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:56,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1702982609, now seen corresponding path program 4 times [2024-06-27 22:00:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874134797] [2024-06-27 22:00:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:57,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874134797] [2024-06-27 22:00:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874134797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:57,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:57,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984068771] [2024-06-27 22:00:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:57,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:57,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 238 transitions, 3274 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:57,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:57,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:57,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:00:58,395 INFO L124 PetriNetUnfolderBase]: 842/1601 cut-off events. [2024-06-27 22:00:58,395 INFO L125 PetriNetUnfolderBase]: For 31899/31899 co-relation queries the response was YES. [2024-06-27 22:00:58,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10683 conditions, 1601 events. 842/1601 cut-off events. For 31899/31899 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9255 event pairs, 136 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 10598. Up to 1104 conditions per place. [2024-06-27 22:00:58,432 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 158 selfloop transitions, 96 changer transitions 0/262 dead transitions. [2024-06-27 22:00:58,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 262 transitions, 4056 flow [2024-06-27 22:00:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:00:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:00:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:00:58,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:00:58,433 INFO L175 Difference]: Start difference. First operand has 178 places, 238 transitions, 3274 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:00:58,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 262 transitions, 4056 flow [2024-06-27 22:00:58,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 262 transitions, 3841 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:00:58,514 INFO L231 Difference]: Finished difference. Result has 181 places, 244 transitions, 3399 flow [2024-06-27 22:00:58,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3399, PETRI_PLACES=181, PETRI_TRANSITIONS=244} [2024-06-27 22:00:58,515 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-27 22:00:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 244 transitions, 3399 flow [2024-06-27 22:00:58,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:58,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:00:58,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:00:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:00:58,515 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:00:58,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:00:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1361479351, now seen corresponding path program 5 times [2024-06-27 22:00:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:00:58,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153103692] [2024-06-27 22:00:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:00:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:00:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:00:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:00:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:00:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153103692] [2024-06-27 22:00:59,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153103692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:00:59,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:00:59,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:00:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55073850] [2024-06-27 22:00:59,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:00:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:00:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:00:59,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:00:59,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:00:59,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:00:59,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 244 transitions, 3399 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:00:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:00:59,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:00:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:00,127 INFO L124 PetriNetUnfolderBase]: 854/1626 cut-off events. [2024-06-27 22:01:00,127 INFO L125 PetriNetUnfolderBase]: For 34276/34276 co-relation queries the response was YES. [2024-06-27 22:01:00,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10937 conditions, 1626 events. 854/1626 cut-off events. For 34276/34276 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9445 event pairs, 117 based on Foata normal form. 1/1574 useless extension candidates. Maximal degree in co-relation 10851. Up to 1242 conditions per place. [2024-06-27 22:01:00,138 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 65 changer transitions 0/275 dead transitions. [2024-06-27 22:01:00,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 275 transitions, 4123 flow [2024-06-27 22:01:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:01:00,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:01:00,139 INFO L175 Difference]: Start difference. First operand has 181 places, 244 transitions, 3399 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:01:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 275 transitions, 4123 flow [2024-06-27 22:01:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 275 transitions, 4003 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 22:01:00,235 INFO L231 Difference]: Finished difference. Result has 184 places, 250 transitions, 3527 flow [2024-06-27 22:01:00,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3527, PETRI_PLACES=184, PETRI_TRANSITIONS=250} [2024-06-27 22:01:00,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-27 22:01:00,236 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 250 transitions, 3527 flow [2024-06-27 22:01:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:00,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:00,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:00,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:01:00,236 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:00,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash -342426610, now seen corresponding path program 7 times [2024-06-27 22:01:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:00,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052594637] [2024-06-27 22:01:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:00,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:01,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052594637] [2024-06-27 22:01:01,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052594637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228637808] [2024-06-27 22:01:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:01,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:01,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:01,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 250 transitions, 3527 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:01,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:01,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:01,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:01,781 INFO L124 PetriNetUnfolderBase]: 878/1657 cut-off events. [2024-06-27 22:01:01,781 INFO L125 PetriNetUnfolderBase]: For 35421/35421 co-relation queries the response was YES. [2024-06-27 22:01:01,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1657 events. 878/1657 cut-off events. For 35421/35421 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9607 event pairs, 118 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 11212. Up to 1268 conditions per place. [2024-06-27 22:01:01,793 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 207 selfloop transitions, 68 changer transitions 0/283 dead transitions. [2024-06-27 22:01:01,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 283 transitions, 4288 flow [2024-06-27 22:01:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:01:01,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:01:01,796 INFO L175 Difference]: Start difference. First operand has 184 places, 250 transitions, 3527 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:01:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 283 transitions, 4288 flow [2024-06-27 22:01:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 283 transitions, 4113 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 22:01:01,905 INFO L231 Difference]: Finished difference. Result has 187 places, 258 transitions, 3635 flow [2024-06-27 22:01:01,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3635, PETRI_PLACES=187, PETRI_TRANSITIONS=258} [2024-06-27 22:01:01,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-27 22:01:01,906 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 258 transitions, 3635 flow [2024-06-27 22:01:01,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:01,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:01,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:01:01,906 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:01,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1221173037, now seen corresponding path program 6 times [2024-06-27 22:01:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778071739] [2024-06-27 22:01:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778071739] [2024-06-27 22:01:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778071739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957662788] [2024-06-27 22:01:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:02,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:02,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 258 transitions, 3635 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:02,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:02,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:02,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:03,357 INFO L124 PetriNetUnfolderBase]: 892/1685 cut-off events. [2024-06-27 22:01:03,357 INFO L125 PetriNetUnfolderBase]: For 36185/36185 co-relation queries the response was YES. [2024-06-27 22:01:03,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11548 conditions, 1685 events. 892/1685 cut-off events. For 36185/36185 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9802 event pairs, 129 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 11459. Up to 1319 conditions per place. [2024-06-27 22:01:03,368 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 225 selfloop transitions, 61 changer transitions 0/294 dead transitions. [2024-06-27 22:01:03,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 294 transitions, 4519 flow [2024-06-27 22:01:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:01:03,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:01:03,369 INFO L175 Difference]: Start difference. First operand has 187 places, 258 transitions, 3635 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:01:03,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 294 transitions, 4519 flow [2024-06-27 22:01:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 294 transitions, 4319 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:03,478 INFO L231 Difference]: Finished difference. Result has 189 places, 271 transitions, 3834 flow [2024-06-27 22:01:03,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3834, PETRI_PLACES=189, PETRI_TRANSITIONS=271} [2024-06-27 22:01:03,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 22:01:03,480 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 271 transitions, 3834 flow [2024-06-27 22:01:03,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:03,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:03,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:03,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:01:03,481 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:03,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1221294154, now seen corresponding path program 8 times [2024-06-27 22:01:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562407343] [2024-06-27 22:01:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562407343] [2024-06-27 22:01:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562407343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060438513] [2024-06-27 22:01:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:04,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:04,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 271 transitions, 3834 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:04,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:04,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:04,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:05,275 INFO L124 PetriNetUnfolderBase]: 914/1716 cut-off events. [2024-06-27 22:01:05,276 INFO L125 PetriNetUnfolderBase]: For 36971/36971 co-relation queries the response was YES. [2024-06-27 22:01:05,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 1716 events. 914/1716 cut-off events. For 36971/36971 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9983 event pairs, 130 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 11643. Up to 1313 conditions per place. [2024-06-27 22:01:05,287 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 215 selfloop transitions, 81 changer transitions 0/304 dead transitions. [2024-06-27 22:01:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 304 transitions, 4661 flow [2024-06-27 22:01:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:01:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:01:05,289 INFO L175 Difference]: Start difference. First operand has 189 places, 271 transitions, 3834 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:01:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 304 transitions, 4661 flow [2024-06-27 22:01:05,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 304 transitions, 4416 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:01:05,404 INFO L231 Difference]: Finished difference. Result has 193 places, 282 transitions, 3952 flow [2024-06-27 22:01:05,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3952, PETRI_PLACES=193, PETRI_TRANSITIONS=282} [2024-06-27 22:01:05,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 22:01:05,405 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 282 transitions, 3952 flow [2024-06-27 22:01:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:05,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:05,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:01:05,405 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:05,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1221293937, now seen corresponding path program 7 times [2024-06-27 22:01:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:05,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097841675] [2024-06-27 22:01:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097841675] [2024-06-27 22:01:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097841675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:06,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703288496] [2024-06-27 22:01:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:06,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:06,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 282 transitions, 3952 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:06,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:06,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:06,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:07,245 INFO L124 PetriNetUnfolderBase]: 930/1749 cut-off events. [2024-06-27 22:01:07,246 INFO L125 PetriNetUnfolderBase]: For 38427/38427 co-relation queries the response was YES. [2024-06-27 22:01:07,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 1749 events. 930/1749 cut-off events. For 38427/38427 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10231 event pairs, 131 based on Foata normal form. 1/1697 useless extension candidates. Maximal degree in co-relation 11876. Up to 1350 conditions per place. [2024-06-27 22:01:07,259 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 227 selfloop transitions, 78 changer transitions 0/313 dead transitions. [2024-06-27 22:01:07,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 313 transitions, 4767 flow [2024-06-27 22:01:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:01:07,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:01:07,261 INFO L175 Difference]: Start difference. First operand has 193 places, 282 transitions, 3952 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:01:07,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 313 transitions, 4767 flow [2024-06-27 22:01:07,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 313 transitions, 4577 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:07,364 INFO L231 Difference]: Finished difference. Result has 195 places, 291 transitions, 4079 flow [2024-06-27 22:01:07,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4079, PETRI_PLACES=195, PETRI_TRANSITIONS=291} [2024-06-27 22:01:07,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-27 22:01:07,364 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 291 transitions, 4079 flow [2024-06-27 22:01:07,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:07,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:07,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:07,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:01:07,365 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:07,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1225964397, now seen corresponding path program 8 times [2024-06-27 22:01:07,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:07,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263799614] [2024-06-27 22:01:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263799614] [2024-06-27 22:01:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263799614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:08,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:08,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:08,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353896664] [2024-06-27 22:01:08,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:08,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:08,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:08,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 291 transitions, 4079 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:08,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:08,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:08,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:09,127 INFO L124 PetriNetUnfolderBase]: 932/1754 cut-off events. [2024-06-27 22:01:09,127 INFO L125 PetriNetUnfolderBase]: For 38554/38554 co-relation queries the response was YES. [2024-06-27 22:01:09,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11910 conditions, 1754 events. 932/1754 cut-off events. For 38554/38554 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10238 event pairs, 127 based on Foata normal form. 1/1701 useless extension candidates. Maximal degree in co-relation 11817. Up to 1293 conditions per place. [2024-06-27 22:01:09,140 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 201 selfloop transitions, 107 changer transitions 0/316 dead transitions. [2024-06-27 22:01:09,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 316 transitions, 4793 flow [2024-06-27 22:01:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:01:09,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:01:09,142 INFO L175 Difference]: Start difference. First operand has 195 places, 291 transitions, 4079 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:01:09,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 316 transitions, 4793 flow [2024-06-27 22:01:09,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 316 transitions, 4579 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:09,284 INFO L231 Difference]: Finished difference. Result has 197 places, 294 transitions, 4113 flow [2024-06-27 22:01:09,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3865, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4113, PETRI_PLACES=197, PETRI_TRANSITIONS=294} [2024-06-27 22:01:09,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 22:01:09,285 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 294 transitions, 4113 flow [2024-06-27 22:01:09,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:09,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:09,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:01:09,286 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:09,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1225964614, now seen corresponding path program 9 times [2024-06-27 22:01:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634743503] [2024-06-27 22:01:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634743503] [2024-06-27 22:01:10,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634743503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:10,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:10,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335517420] [2024-06-27 22:01:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:10,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:10,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 294 transitions, 4113 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:10,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:10,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:10,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:10,982 INFO L124 PetriNetUnfolderBase]: 944/1765 cut-off events. [2024-06-27 22:01:10,982 INFO L125 PetriNetUnfolderBase]: For 39679/39679 co-relation queries the response was YES. [2024-06-27 22:01:10,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12110 conditions, 1765 events. 944/1765 cut-off events. For 39679/39679 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10265 event pairs, 128 based on Foata normal form. 1/1712 useless extension candidates. Maximal degree in co-relation 12016. Up to 1334 conditions per place. [2024-06-27 22:01:10,997 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 217 selfloop transitions, 97 changer transitions 0/322 dead transitions. [2024-06-27 22:01:10,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 322 transitions, 4922 flow [2024-06-27 22:01:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:01:10,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:01:10,999 INFO L175 Difference]: Start difference. First operand has 197 places, 294 transitions, 4113 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:01:10,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 322 transitions, 4922 flow [2024-06-27 22:01:11,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 322 transitions, 4508 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:01:11,126 INFO L231 Difference]: Finished difference. Result has 197 places, 300 transitions, 4016 flow [2024-06-27 22:01:11,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4016, PETRI_PLACES=197, PETRI_TRANSITIONS=300} [2024-06-27 22:01:11,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 22:01:11,127 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 300 transitions, 4016 flow [2024-06-27 22:01:11,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:11,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:11,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:01:11,127 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1893504598, now seen corresponding path program 10 times [2024-06-27 22:01:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935099707] [2024-06-27 22:01:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935099707] [2024-06-27 22:01:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935099707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797375261] [2024-06-27 22:01:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:12,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 300 transitions, 4016 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:12,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:12,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:13,286 INFO L124 PetriNetUnfolderBase]: 946/1768 cut-off events. [2024-06-27 22:01:13,286 INFO L125 PetriNetUnfolderBase]: For 38423/38423 co-relation queries the response was YES. [2024-06-27 22:01:13,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11873 conditions, 1768 events. 946/1768 cut-off events. For 38423/38423 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10307 event pairs, 127 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 11779. Up to 1271 conditions per place. [2024-06-27 22:01:13,297 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 190 selfloop transitions, 127 changer transitions 0/325 dead transitions. [2024-06-27 22:01:13,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 325 transitions, 4754 flow [2024-06-27 22:01:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:01:13,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:01:13,299 INFO L175 Difference]: Start difference. First operand has 197 places, 300 transitions, 4016 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:01:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 325 transitions, 4754 flow [2024-06-27 22:01:13,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 325 transitions, 4506 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:13,415 INFO L231 Difference]: Finished difference. Result has 199 places, 303 transitions, 4062 flow [2024-06-27 22:01:13,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4062, PETRI_PLACES=199, PETRI_TRANSITIONS=303} [2024-06-27 22:01:13,415 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 22:01:13,415 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 303 transitions, 4062 flow [2024-06-27 22:01:13,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:13,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:13,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:13,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:01:13,416 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:13,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash -816526261, now seen corresponding path program 1 times [2024-06-27 22:01:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081988510] [2024-06-27 22:01:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:15,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081988510] [2024-06-27 22:01:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081988510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:15,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132959190] [2024-06-27 22:01:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:15,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:15,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:15,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 303 transitions, 4062 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:15,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:15,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:15,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:16,513 INFO L124 PetriNetUnfolderBase]: 893/1708 cut-off events. [2024-06-27 22:01:16,513 INFO L125 PetriNetUnfolderBase]: For 38924/38934 co-relation queries the response was YES. [2024-06-27 22:01:16,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11420 conditions, 1708 events. 893/1708 cut-off events. For 38924/38934 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10170 event pairs, 178 based on Foata normal form. 10/1663 useless extension candidates. Maximal degree in co-relation 11325. Up to 1281 conditions per place. [2024-06-27 22:01:16,526 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 273 selfloop transitions, 25 changer transitions 0/333 dead transitions. [2024-06-27 22:01:16,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 333 transitions, 4858 flow [2024-06-27 22:01:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:01:16,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:01:16,527 INFO L175 Difference]: Start difference. First operand has 199 places, 303 transitions, 4062 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:01:16,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 333 transitions, 4858 flow [2024-06-27 22:01:16,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 333 transitions, 4397 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 22:01:16,648 INFO L231 Difference]: Finished difference. Result has 202 places, 307 transitions, 3723 flow [2024-06-27 22:01:16,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3723, PETRI_PLACES=202, PETRI_TRANSITIONS=307} [2024-06-27 22:01:16,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 22:01:16,648 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 307 transitions, 3723 flow [2024-06-27 22:01:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:16,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:16,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:01:16,649 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1452157687, now seen corresponding path program 1 times [2024-06-27 22:01:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758442109] [2024-06-27 22:01:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:16,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:18,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:18,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758442109] [2024-06-27 22:01:18,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758442109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:18,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43517465] [2024-06-27 22:01:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:18,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:18,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 307 transitions, 3723 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:18,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:18,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:19,643 INFO L124 PetriNetUnfolderBase]: 955/1790 cut-off events. [2024-06-27 22:01:19,643 INFO L125 PetriNetUnfolderBase]: For 38478/38478 co-relation queries the response was YES. [2024-06-27 22:01:19,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 1790 events. 955/1790 cut-off events. For 38478/38478 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10544 event pairs, 128 based on Foata normal form. 1/1735 useless extension candidates. Maximal degree in co-relation 11460. Up to 1378 conditions per place. [2024-06-27 22:01:19,656 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 244 selfloop transitions, 78 changer transitions 0/330 dead transitions. [2024-06-27 22:01:19,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 330 transitions, 4505 flow [2024-06-27 22:01:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:01:19,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:01:19,657 INFO L175 Difference]: Start difference. First operand has 202 places, 307 transitions, 3723 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:01:19,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 330 transitions, 4505 flow [2024-06-27 22:01:19,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 330 transitions, 4410 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:01:19,789 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 3866 flow [2024-06-27 22:01:19,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3866, PETRI_PLACES=205, PETRI_TRANSITIONS=310} [2024-06-27 22:01:19,790 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 22:01:19,790 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 3866 flow [2024-06-27 22:01:19,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:19,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:19,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:01:19,790 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:19,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1590679079, now seen corresponding path program 1 times [2024-06-27 22:01:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165120331] [2024-06-27 22:01:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:21,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:21,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165120331] [2024-06-27 22:01:21,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165120331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398040948] [2024-06-27 22:01:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:21,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:21,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 310 transitions, 3866 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:21,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:21,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:21,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:21,689 INFO L124 PetriNetUnfolderBase]: 884/1675 cut-off events. [2024-06-27 22:01:21,689 INFO L125 PetriNetUnfolderBase]: For 42656/42658 co-relation queries the response was YES. [2024-06-27 22:01:21,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10992 conditions, 1675 events. 884/1675 cut-off events. For 42656/42658 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10042 event pairs, 128 based on Foata normal form. 2/1620 useless extension candidates. Maximal degree in co-relation 10896. Up to 1134 conditions per place. [2024-06-27 22:01:21,703 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 194 selfloop transitions, 128 changer transitions 0/336 dead transitions. [2024-06-27 22:01:21,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 336 transitions, 4804 flow [2024-06-27 22:01:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:01:21,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:01:21,704 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 3866 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:01:21,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 336 transitions, 4804 flow [2024-06-27 22:01:21,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 336 transitions, 4592 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:01:21,817 INFO L231 Difference]: Finished difference. Result has 206 places, 317 transitions, 4140 flow [2024-06-27 22:01:21,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3654, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4140, PETRI_PLACES=206, PETRI_TRANSITIONS=317} [2024-06-27 22:01:21,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 22:01:21,817 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 317 transitions, 4140 flow [2024-06-27 22:01:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:21,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:21,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:21,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:01:21,818 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:21,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1590679327, now seen corresponding path program 2 times [2024-06-27 22:01:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983730137] [2024-06-27 22:01:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:23,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983730137] [2024-06-27 22:01:23,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983730137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:23,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:23,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:23,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691777961] [2024-06-27 22:01:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:23,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:23,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:23,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:23,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 317 transitions, 4140 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:23,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:23,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:23,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:24,220 INFO L124 PetriNetUnfolderBase]: 996/1803 cut-off events. [2024-06-27 22:01:24,220 INFO L125 PetriNetUnfolderBase]: For 46385/46385 co-relation queries the response was YES. [2024-06-27 22:01:24,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12633 conditions, 1803 events. 996/1803 cut-off events. For 46385/46385 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10564 event pairs, 100 based on Foata normal form. 1/1761 useless extension candidates. Maximal degree in co-relation 12536. Up to 1390 conditions per place. [2024-06-27 22:01:24,233 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 245 selfloop transitions, 91 changer transitions 0/344 dead transitions. [2024-06-27 22:01:24,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 344 transitions, 5006 flow [2024-06-27 22:01:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:01:24,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:01:24,235 INFO L175 Difference]: Start difference. First operand has 206 places, 317 transitions, 4140 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:01:24,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 344 transitions, 5006 flow [2024-06-27 22:01:24,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 344 transitions, 4796 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:24,367 INFO L231 Difference]: Finished difference. Result has 212 places, 322 transitions, 4247 flow [2024-06-27 22:01:24,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4247, PETRI_PLACES=212, PETRI_TRANSITIONS=322} [2024-06-27 22:01:24,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 22:01:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 322 transitions, 4247 flow [2024-06-27 22:01:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:24,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:24,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:24,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:01:24,368 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:24,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1445901577, now seen corresponding path program 3 times [2024-06-27 22:01:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:24,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728294464] [2024-06-27 22:01:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:24,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728294464] [2024-06-27 22:01:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728294464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876482226] [2024-06-27 22:01:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:26,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:26,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 322 transitions, 4247 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:26,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:26,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:26,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:26,912 INFO L124 PetriNetUnfolderBase]: 1007/1860 cut-off events. [2024-06-27 22:01:26,912 INFO L125 PetriNetUnfolderBase]: For 49538/49538 co-relation queries the response was YES. [2024-06-27 22:01:26,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12977 conditions, 1860 events. 1007/1860 cut-off events. For 49538/49538 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10976 event pairs, 103 based on Foata normal form. 1/1809 useless extension candidates. Maximal degree in co-relation 12877. Up to 1428 conditions per place. [2024-06-27 22:01:26,927 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 248 selfloop transitions, 90 changer transitions 0/346 dead transitions. [2024-06-27 22:01:26,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 346 transitions, 5085 flow [2024-06-27 22:01:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:01:26,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:01:26,928 INFO L175 Difference]: Start difference. First operand has 212 places, 322 transitions, 4247 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:01:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 346 transitions, 5085 flow [2024-06-27 22:01:27,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 346 transitions, 4909 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 22:01:27,089 INFO L231 Difference]: Finished difference. Result has 216 places, 324 transitions, 4305 flow [2024-06-27 22:01:27,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=216, PETRI_TRANSITIONS=324} [2024-06-27 22:01:27,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-27 22:01:27,090 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 324 transitions, 4305 flow [2024-06-27 22:01:27,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:27,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:01:27,090 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:27,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1445895067, now seen corresponding path program 4 times [2024-06-27 22:01:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317160819] [2024-06-27 22:01:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317160819] [2024-06-27 22:01:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317160819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623101810] [2024-06-27 22:01:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:28,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:28,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 324 transitions, 4305 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:28,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:28,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:29,323 INFO L124 PetriNetUnfolderBase]: 1015/1876 cut-off events. [2024-06-27 22:01:29,323 INFO L125 PetriNetUnfolderBase]: For 50827/50827 co-relation queries the response was YES. [2024-06-27 22:01:29,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13246 conditions, 1876 events. 1015/1876 cut-off events. For 50827/50827 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11078 event pairs, 123 based on Foata normal form. 1/1825 useless extension candidates. Maximal degree in co-relation 13144. Up to 1455 conditions per place. [2024-06-27 22:01:29,338 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 254 selfloop transitions, 85 changer transitions 0/347 dead transitions. [2024-06-27 22:01:29,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 347 transitions, 5147 flow [2024-06-27 22:01:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:01:29,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:01:29,339 INFO L175 Difference]: Start difference. First operand has 216 places, 324 transitions, 4305 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:01:29,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 347 transitions, 5147 flow [2024-06-27 22:01:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 347 transitions, 4949 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:01:29,486 INFO L231 Difference]: Finished difference. Result has 218 places, 327 transitions, 4380 flow [2024-06-27 22:01:29,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4380, PETRI_PLACES=218, PETRI_TRANSITIONS=327} [2024-06-27 22:01:29,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 22:01:29,487 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 327 transitions, 4380 flow [2024-06-27 22:01:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:29,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:29,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:01:29,487 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1445894819, now seen corresponding path program 2 times [2024-06-27 22:01:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135801461] [2024-06-27 22:01:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135801461] [2024-06-27 22:01:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135801461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:30,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:30,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021084504] [2024-06-27 22:01:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:30,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:30,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 327 transitions, 4380 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:30,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:30,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:30,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:31,446 INFO L124 PetriNetUnfolderBase]: 942/1777 cut-off events. [2024-06-27 22:01:31,446 INFO L125 PetriNetUnfolderBase]: For 57682/57684 co-relation queries the response was YES. [2024-06-27 22:01:31,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12630 conditions, 1777 events. 942/1777 cut-off events. For 57682/57684 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10746 event pairs, 158 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 12527. Up to 1249 conditions per place. [2024-06-27 22:01:31,460 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 207 selfloop transitions, 132 changer transitions 0/353 dead transitions. [2024-06-27 22:01:31,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 353 transitions, 5420 flow [2024-06-27 22:01:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:01:31,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:01:31,462 INFO L175 Difference]: Start difference. First operand has 218 places, 327 transitions, 4380 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:01:31,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 353 transitions, 5420 flow [2024-06-27 22:01:31,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 353 transitions, 5171 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:01:31,622 INFO L231 Difference]: Finished difference. Result has 219 places, 336 transitions, 4664 flow [2024-06-27 22:01:31,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4664, PETRI_PLACES=219, PETRI_TRANSITIONS=336} [2024-06-27 22:01:31,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-27 22:01:31,622 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 336 transitions, 4664 flow [2024-06-27 22:01:31,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:31,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:31,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:01:31,623 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:31,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1750146155, now seen corresponding path program 5 times [2024-06-27 22:01:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308750650] [2024-06-27 22:01:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308750650] [2024-06-27 22:01:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308750650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:33,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973213505] [2024-06-27 22:01:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:33,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:33,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 336 transitions, 4664 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:33,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:33,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:33,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:34,014 INFO L124 PetriNetUnfolderBase]: 1068/1985 cut-off events. [2024-06-27 22:01:34,014 INFO L125 PetriNetUnfolderBase]: For 61911/61911 co-relation queries the response was YES. [2024-06-27 22:01:34,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14593 conditions, 1985 events. 1068/1985 cut-off events. For 61911/61911 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11965 event pairs, 103 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 14489. Up to 1393 conditions per place. [2024-06-27 22:01:34,029 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 124 changer transitions 0/371 dead transitions. [2024-06-27 22:01:34,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 371 transitions, 5801 flow [2024-06-27 22:01:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:01:34,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:01:34,030 INFO L175 Difference]: Start difference. First operand has 219 places, 336 transitions, 4664 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:01:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 371 transitions, 5801 flow [2024-06-27 22:01:34,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 371 transitions, 5521 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:34,216 INFO L231 Difference]: Finished difference. Result has 226 places, 346 transitions, 4986 flow [2024-06-27 22:01:34,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4986, PETRI_PLACES=226, PETRI_TRANSITIONS=346} [2024-06-27 22:01:34,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 22:01:34,217 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 346 transitions, 4986 flow [2024-06-27 22:01:34,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:34,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:34,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:34,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:01:34,217 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:34,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1750145907, now seen corresponding path program 3 times [2024-06-27 22:01:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200993116] [2024-06-27 22:01:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200993116] [2024-06-27 22:01:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200993116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286776404] [2024-06-27 22:01:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:35,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:01:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 346 transitions, 4986 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:01:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:36,355 INFO L124 PetriNetUnfolderBase]: 1076/2057 cut-off events. [2024-06-27 22:01:36,355 INFO L125 PetriNetUnfolderBase]: For 75321/75323 co-relation queries the response was YES. [2024-06-27 22:01:36,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15521 conditions, 2057 events. 1076/2057 cut-off events. For 75321/75323 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12951 event pairs, 168 based on Foata normal form. 2/1983 useless extension candidates. Maximal degree in co-relation 15413. Up to 1081 conditions per place. [2024-06-27 22:01:36,373 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 235 selfloop transitions, 143 changer transitions 0/393 dead transitions. [2024-06-27 22:01:36,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 393 transitions, 6590 flow [2024-06-27 22:01:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 22:01:36,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777027027027027 [2024-06-27 22:01:36,375 INFO L175 Difference]: Start difference. First operand has 226 places, 346 transitions, 4986 flow. Second operand 8 states and 171 transitions. [2024-06-27 22:01:36,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 393 transitions, 6590 flow [2024-06-27 22:01:36,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 393 transitions, 6288 flow, removed 102 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:36,591 INFO L231 Difference]: Finished difference. Result has 233 places, 362 transitions, 5473 flow [2024-06-27 22:01:36,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4716, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5473, PETRI_PLACES=233, PETRI_TRANSITIONS=362} [2024-06-27 22:01:36,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 22:01:36,592 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 362 transitions, 5473 flow [2024-06-27 22:01:36,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:36,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:36,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:36,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:01:36,592 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:36,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1445655499, now seen corresponding path program 1 times [2024-06-27 22:01:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890405504] [2024-06-27 22:01:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:36,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:38,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890405504] [2024-06-27 22:01:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890405504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:38,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750700930] [2024-06-27 22:01:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:38,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:01:38,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 362 transitions, 5473 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:38,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:38,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:01:38,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:38,752 INFO L124 PetriNetUnfolderBase]: 1074/2039 cut-off events. [2024-06-27 22:01:38,752 INFO L125 PetriNetUnfolderBase]: For 76451/76453 co-relation queries the response was YES. [2024-06-27 22:01:38,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16048 conditions, 2039 events. 1074/2039 cut-off events. For 76451/76453 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12821 event pairs, 151 based on Foata normal form. 1/1965 useless extension candidates. Maximal degree in co-relation 15936. Up to 1613 conditions per place. [2024-06-27 22:01:38,769 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 328 selfloop transitions, 42 changer transitions 0/385 dead transitions. [2024-06-27 22:01:38,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 385 transitions, 6362 flow [2024-06-27 22:01:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:01:38,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 22:01:38,770 INFO L175 Difference]: Start difference. First operand has 233 places, 362 transitions, 5473 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:01:38,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 385 transitions, 6362 flow [2024-06-27 22:01:39,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 385 transitions, 6258 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:39,019 INFO L231 Difference]: Finished difference. Result has 239 places, 363 transitions, 5471 flow [2024-06-27 22:01:39,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5471, PETRI_PLACES=239, PETRI_TRANSITIONS=363} [2024-06-27 22:01:39,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 22:01:39,020 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 363 transitions, 5471 flow [2024-06-27 22:01:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:39,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:39,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:39,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:01:39,021 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:39,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1750137537, now seen corresponding path program 4 times [2024-06-27 22:01:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:39,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305720662] [2024-06-27 22:01:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:40,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:40,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305720662] [2024-06-27 22:01:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305720662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876700216] [2024-06-27 22:01:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:40,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:01:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 363 transitions, 5471 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:40,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:01:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:41,183 INFO L124 PetriNetUnfolderBase]: 1070/2048 cut-off events. [2024-06-27 22:01:41,183 INFO L125 PetriNetUnfolderBase]: For 74515/74517 co-relation queries the response was YES. [2024-06-27 22:01:41,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15895 conditions, 2048 events. 1070/2048 cut-off events. For 74515/74517 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12910 event pairs, 151 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 15781. Up to 1077 conditions per place. [2024-06-27 22:01:41,201 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 215 selfloop transitions, 165 changer transitions 0/395 dead transitions. [2024-06-27 22:01:41,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 395 transitions, 6786 flow [2024-06-27 22:01:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 22:01:41,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-06-27 22:01:41,202 INFO L175 Difference]: Start difference. First operand has 239 places, 363 transitions, 5471 flow. Second operand 8 states and 170 transitions. [2024-06-27 22:01:41,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 395 transitions, 6786 flow [2024-06-27 22:01:41,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 395 transitions, 6657 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:01:41,447 INFO L231 Difference]: Finished difference. Result has 242 places, 369 transitions, 5938 flow [2024-06-27 22:01:41,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5352, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5938, PETRI_PLACES=242, PETRI_TRANSITIONS=369} [2024-06-27 22:01:41,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-27 22:01:41,448 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 369 transitions, 5938 flow [2024-06-27 22:01:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:41,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:41,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:01:41,449 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:41,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 447002717, now seen corresponding path program 5 times [2024-06-27 22:01:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990360682] [2024-06-27 22:01:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990360682] [2024-06-27 22:01:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990360682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:43,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841311406] [2024-06-27 22:01:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:43,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:43,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 369 transitions, 5938 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:43,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:43,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:43,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:44,002 INFO L124 PetriNetUnfolderBase]: 1139/2212 cut-off events. [2024-06-27 22:01:44,003 INFO L125 PetriNetUnfolderBase]: For 82260/82262 co-relation queries the response was YES. [2024-06-27 22:01:44,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17681 conditions, 2212 events. 1139/2212 cut-off events. For 82260/82262 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14399 event pairs, 151 based on Foata normal form. 1/2127 useless extension candidates. Maximal degree in co-relation 17564. Up to 1263 conditions per place. [2024-06-27 22:01:44,024 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 249 selfloop transitions, 158 changer transitions 0/421 dead transitions. [2024-06-27 22:01:44,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 421 transitions, 7847 flow [2024-06-27 22:01:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:01:44,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2024-06-27 22:01:44,025 INFO L175 Difference]: Start difference. First operand has 242 places, 369 transitions, 5938 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:01:44,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 421 transitions, 7847 flow [2024-06-27 22:01:44,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 421 transitions, 7598 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:44,386 INFO L231 Difference]: Finished difference. Result has 249 places, 390 transitions, 6545 flow [2024-06-27 22:01:44,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5721, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6545, PETRI_PLACES=249, PETRI_TRANSITIONS=390} [2024-06-27 22:01:44,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 22:01:44,387 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 390 transitions, 6545 flow [2024-06-27 22:01:44,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:44,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:44,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:01:44,388 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 446994347, now seen corresponding path program 6 times [2024-06-27 22:01:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555211806] [2024-06-27 22:01:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555211806] [2024-06-27 22:01:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555211806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46652831] [2024-06-27 22:01:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:46,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:46,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 390 transitions, 6545 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:46,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:46,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:46,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:46,886 INFO L124 PetriNetUnfolderBase]: 1137/2210 cut-off events. [2024-06-27 22:01:46,887 INFO L125 PetriNetUnfolderBase]: For 84114/84116 co-relation queries the response was YES. [2024-06-27 22:01:46,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17971 conditions, 2210 events. 1137/2210 cut-off events. For 84114/84116 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14381 event pairs, 158 based on Foata normal form. 1/2124 useless extension candidates. Maximal degree in co-relation 17850. Up to 1261 conditions per place. [2024-06-27 22:01:46,907 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 246 selfloop transitions, 162 changer transitions 0/422 dead transitions. [2024-06-27 22:01:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 422 transitions, 7971 flow [2024-06-27 22:01:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:01:46,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2024-06-27 22:01:46,909 INFO L175 Difference]: Start difference. First operand has 249 places, 390 transitions, 6545 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:01:46,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 422 transitions, 7971 flow [2024-06-27 22:01:47,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 422 transitions, 7775 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-27 22:01:47,234 INFO L231 Difference]: Finished difference. Result has 256 places, 393 transitions, 6748 flow [2024-06-27 22:01:47,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6748, PETRI_PLACES=256, PETRI_TRANSITIONS=393} [2024-06-27 22:01:47,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-27 22:01:47,234 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 393 transitions, 6748 flow [2024-06-27 22:01:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:47,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:47,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:47,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:01:47,235 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:47,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:47,235 INFO L85 PathProgramCache]: Analyzing trace with hash 446994099, now seen corresponding path program 6 times [2024-06-27 22:01:47,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:47,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486662523] [2024-06-27 22:01:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486662523] [2024-06-27 22:01:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486662523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:49,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:01:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248269340] [2024-06-27 22:01:49,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:49,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:01:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:01:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:01:49,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:49,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 393 transitions, 6748 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:49,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:49,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:49,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:50,393 INFO L124 PetriNetUnfolderBase]: 1269/2414 cut-off events. [2024-06-27 22:01:50,393 INFO L125 PetriNetUnfolderBase]: For 88553/88553 co-relation queries the response was YES. [2024-06-27 22:01:50,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20254 conditions, 2414 events. 1269/2414 cut-off events. For 88553/88553 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15481 event pairs, 134 based on Foata normal form. 1/2332 useless extension candidates. Maximal degree in co-relation 20130. Up to 1395 conditions per place. [2024-06-27 22:01:50,415 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 219 selfloop transitions, 204 changer transitions 0/431 dead transitions. [2024-06-27 22:01:50,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 431 transitions, 8211 flow [2024-06-27 22:01:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:01:50,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-27 22:01:50,416 INFO L175 Difference]: Start difference. First operand has 256 places, 393 transitions, 6748 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:01:50,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 431 transitions, 8211 flow [2024-06-27 22:01:50,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 431 transitions, 7899 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:50,831 INFO L231 Difference]: Finished difference. Result has 263 places, 404 transitions, 7311 flow [2024-06-27 22:01:50,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7311, PETRI_PLACES=263, PETRI_TRANSITIONS=404} [2024-06-27 22:01:50,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-27 22:01:50,832 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 404 transitions, 7311 flow [2024-06-27 22:01:50,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:50,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:50,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:50,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:01:50,832 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:50,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash 457122047, now seen corresponding path program 7 times [2024-06-27 22:01:50,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:50,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053405554] [2024-06-27 22:01:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:50,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:52,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053405554] [2024-06-27 22:01:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053405554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:52,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:52,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138774063] [2024-06-27 22:01:52,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:52,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:52,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:01:52,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 404 transitions, 7311 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:52,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:52,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:01:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:53,899 INFO L124 PetriNetUnfolderBase]: 1279/2421 cut-off events. [2024-06-27 22:01:53,899 INFO L125 PetriNetUnfolderBase]: For 94262/94262 co-relation queries the response was YES. [2024-06-27 22:01:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20852 conditions, 2421 events. 1279/2421 cut-off events. For 94262/94262 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15442 event pairs, 222 based on Foata normal form. 2/2346 useless extension candidates. Maximal degree in co-relation 20724. Up to 1923 conditions per place. [2024-06-27 22:01:53,925 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 396 selfloop transitions, 29 changer transitions 0/433 dead transitions. [2024-06-27 22:01:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 433 transitions, 8543 flow [2024-06-27 22:01:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:01:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:01:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:01:53,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:01:53,926 INFO L175 Difference]: Start difference. First operand has 263 places, 404 transitions, 7311 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:01:53,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 433 transitions, 8543 flow [2024-06-27 22:01:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 433 transitions, 8178 flow, removed 107 selfloop flow, removed 4 redundant places. [2024-06-27 22:01:54,377 INFO L231 Difference]: Finished difference. Result has 269 places, 406 transitions, 7052 flow [2024-06-27 22:01:54,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7052, PETRI_PLACES=269, PETRI_TRANSITIONS=406} [2024-06-27 22:01:54,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 22:01:54,378 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 406 transitions, 7052 flow [2024-06-27 22:01:54,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:54,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:54,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:54,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:01:54,378 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:54,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 161903157, now seen corresponding path program 2 times [2024-06-27 22:01:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:54,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467852713] [2024-06-27 22:01:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:54,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:55,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:55,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467852713] [2024-06-27 22:01:55,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467852713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:55,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:01:55,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759641768] [2024-06-27 22:01:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:55,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:01:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:01:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:01:56,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:01:56,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 406 transitions, 7052 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:56,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:56,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:01:56,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:56,768 INFO L124 PetriNetUnfolderBase]: 1161/2263 cut-off events. [2024-06-27 22:01:56,768 INFO L125 PetriNetUnfolderBase]: For 87670/87672 co-relation queries the response was YES. [2024-06-27 22:01:56,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18896 conditions, 2263 events. 1161/2263 cut-off events. For 87670/87672 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14852 event pairs, 147 based on Foata normal form. 1/2167 useless extension candidates. Maximal degree in co-relation 18766. Up to 1777 conditions per place. [2024-06-27 22:01:56,791 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 374 selfloop transitions, 37 changer transitions 0/425 dead transitions. [2024-06-27 22:01:56,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 425 transitions, 8010 flow [2024-06-27 22:01:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:01:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:01:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:01:56,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:01:56,799 INFO L175 Difference]: Start difference. First operand has 269 places, 406 transitions, 7052 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:01:56,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 425 transitions, 8010 flow [2024-06-27 22:01:57,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 425 transitions, 7908 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:01:57,257 INFO L231 Difference]: Finished difference. Result has 269 places, 406 transitions, 7029 flow [2024-06-27 22:01:57,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6950, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7029, PETRI_PLACES=269, PETRI_TRANSITIONS=406} [2024-06-27 22:01:57,257 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 22:01:57,258 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 406 transitions, 7029 flow [2024-06-27 22:01:57,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:57,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:57,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:57,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:01:57,258 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:57,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -365730885, now seen corresponding path program 8 times [2024-06-27 22:01:57,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573159877] [2024-06-27 22:01:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:01:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:01:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:01:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573159877] [2024-06-27 22:01:58,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573159877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:01:58,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:01:58,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:01:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174212998] [2024-06-27 22:01:58,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:01:58,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:01:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:01:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:01:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:01:58,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:01:58,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 406 transitions, 7029 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:58,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:01:58,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:01:58,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:01:59,481 INFO L124 PetriNetUnfolderBase]: 1222/2393 cut-off events. [2024-06-27 22:01:59,482 INFO L125 PetriNetUnfolderBase]: For 97435/97437 co-relation queries the response was YES. [2024-06-27 22:01:59,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20103 conditions, 2393 events. 1222/2393 cut-off events. For 97435/97437 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15953 event pairs, 152 based on Foata normal form. 1/2291 useless extension candidates. Maximal degree in co-relation 19974. Up to 1579 conditions per place. [2024-06-27 22:01:59,505 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 314 selfloop transitions, 123 changer transitions 0/452 dead transitions. [2024-06-27 22:01:59,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 452 transitions, 8881 flow [2024-06-27 22:01:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:01:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:01:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 22:01:59,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-06-27 22:01:59,506 INFO L175 Difference]: Start difference. First operand has 269 places, 406 transitions, 7029 flow. Second operand 8 states and 170 transitions. [2024-06-27 22:01:59,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 452 transitions, 8881 flow [2024-06-27 22:01:59,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 452 transitions, 8790 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:01:59,942 INFO L231 Difference]: Finished difference. Result has 272 places, 426 transitions, 7822 flow [2024-06-27 22:01:59,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7822, PETRI_PLACES=272, PETRI_TRANSITIONS=426} [2024-06-27 22:01:59,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-27 22:01:59,942 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 426 transitions, 7822 flow [2024-06-27 22:01:59,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:01:59,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:01:59,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:01:59,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:01:59,943 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:01:59,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:01:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash -365970143, now seen corresponding path program 7 times [2024-06-27 22:01:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:01:59,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503771231] [2024-06-27 22:01:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:01:59,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:01:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503771231] [2024-06-27 22:02:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503771231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:01,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247369901] [2024-06-27 22:02:01,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:01,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:01,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:01,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 426 transitions, 7822 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:01,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:01,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:01,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:02,760 INFO L124 PetriNetUnfolderBase]: 1358/2590 cut-off events. [2024-06-27 22:02:02,760 INFO L125 PetriNetUnfolderBase]: For 105026/105026 co-relation queries the response was YES. [2024-06-27 22:02:02,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22931 conditions, 2590 events. 1358/2590 cut-off events. For 105026/105026 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16864 event pairs, 173 based on Foata normal form. 1/2500 useless extension candidates. Maximal degree in co-relation 22799. Up to 1863 conditions per place. [2024-06-27 22:02:02,785 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 136 changer transitions 0/456 dead transitions. [2024-06-27 22:02:02,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 456 transitions, 9187 flow [2024-06-27 22:02:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:02:02,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:02:02,786 INFO L175 Difference]: Start difference. First operand has 272 places, 426 transitions, 7822 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:02:02,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 456 transitions, 9187 flow [2024-06-27 22:02:03,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 456 transitions, 8951 flow, removed 98 selfloop flow, removed 1 redundant places. [2024-06-27 22:02:03,317 INFO L231 Difference]: Finished difference. Result has 282 places, 432 transitions, 8097 flow [2024-06-27 22:02:03,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7592, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8097, PETRI_PLACES=282, PETRI_TRANSITIONS=432} [2024-06-27 22:02:03,318 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 22:02:03,318 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 432 transitions, 8097 flow [2024-06-27 22:02:03,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:03,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:03,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:03,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:02:03,318 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:03,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash 161894229, now seen corresponding path program 8 times [2024-06-27 22:02:03,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711161535] [2024-06-27 22:02:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:03,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:05,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711161535] [2024-06-27 22:02:05,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711161535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:05,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042729003] [2024-06-27 22:02:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:05,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:05,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:05,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:05,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 432 transitions, 8097 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:05,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:05,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:06,055 INFO L124 PetriNetUnfolderBase]: 1372/2622 cut-off events. [2024-06-27 22:02:06,055 INFO L125 PetriNetUnfolderBase]: For 107892/107892 co-relation queries the response was YES. [2024-06-27 22:02:06,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23316 conditions, 2622 events. 1372/2622 cut-off events. For 107892/107892 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 17166 event pairs, 147 based on Foata normal form. 1/2531 useless extension candidates. Maximal degree in co-relation 23180. Up to 1853 conditions per place. [2024-06-27 22:02:06,081 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 309 selfloop transitions, 145 changer transitions 0/462 dead transitions. [2024-06-27 22:02:06,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 462 transitions, 9455 flow [2024-06-27 22:02:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:02:06,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:02:06,082 INFO L175 Difference]: Start difference. First operand has 282 places, 432 transitions, 8097 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:02:06,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 462 transitions, 9455 flow [2024-06-27 22:02:06,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 462 transitions, 9191 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:06,629 INFO L231 Difference]: Finished difference. Result has 286 places, 437 transitions, 8324 flow [2024-06-27 22:02:06,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7833, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8324, PETRI_PLACES=286, PETRI_TRANSITIONS=437} [2024-06-27 22:02:06,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-27 22:02:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 437 transitions, 8324 flow [2024-06-27 22:02:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:06,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:06,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:02:06,631 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:06,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash 161657079, now seen corresponding path program 9 times [2024-06-27 22:02:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462238759] [2024-06-27 22:02:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:08,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462238759] [2024-06-27 22:02:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462238759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:08,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734495190] [2024-06-27 22:02:08,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:08,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:08,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:08,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:08,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:08,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 437 transitions, 8324 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:08,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:08,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:08,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:09,396 INFO L124 PetriNetUnfolderBase]: 1370/2619 cut-off events. [2024-06-27 22:02:09,396 INFO L125 PetriNetUnfolderBase]: For 108361/108361 co-relation queries the response was YES. [2024-06-27 22:02:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23409 conditions, 2619 events. 1370/2619 cut-off events. For 108361/108361 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17126 event pairs, 147 based on Foata normal form. 1/2528 useless extension candidates. Maximal degree in co-relation 23271. Up to 1906 conditions per place. [2024-06-27 22:02:09,425 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 129 changer transitions 0/460 dead transitions. [2024-06-27 22:02:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 460 transitions, 9425 flow [2024-06-27 22:02:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:02:09,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:02:09,427 INFO L175 Difference]: Start difference. First operand has 286 places, 437 transitions, 8324 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:02:09,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 460 transitions, 9425 flow [2024-06-27 22:02:09,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 460 transitions, 8885 flow, removed 127 selfloop flow, removed 8 redundant places. [2024-06-27 22:02:10,004 INFO L231 Difference]: Finished difference. Result has 288 places, 440 transitions, 8173 flow [2024-06-27 22:02:10,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7800, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8173, PETRI_PLACES=288, PETRI_TRANSITIONS=440} [2024-06-27 22:02:10,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:02:10,005 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 440 transitions, 8173 flow [2024-06-27 22:02:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:10,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:10,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:02:10,006 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:10,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 457478547, now seen corresponding path program 3 times [2024-06-27 22:02:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539915833] [2024-06-27 22:02:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539915833] [2024-06-27 22:02:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539915833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:12,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111767733] [2024-06-27 22:02:12,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:12,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:12,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:12,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 440 transitions, 8173 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:13,706 INFO L124 PetriNetUnfolderBase]: 1391/2658 cut-off events. [2024-06-27 22:02:13,706 INFO L125 PetriNetUnfolderBase]: For 108649/108649 co-relation queries the response was YES. [2024-06-27 22:02:13,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23324 conditions, 2658 events. 1391/2658 cut-off events. For 108649/108649 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17504 event pairs, 233 based on Foata normal form. 1/2570 useless extension candidates. Maximal degree in co-relation 23186. Up to 2115 conditions per place. [2024-06-27 22:02:13,733 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 439 selfloop transitions, 37 changer transitions 0/484 dead transitions. [2024-06-27 22:02:13,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 484 transitions, 9643 flow [2024-06-27 22:02:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:02:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:02:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 22:02:13,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 22:02:13,735 INFO L175 Difference]: Start difference. First operand has 288 places, 440 transitions, 8173 flow. Second operand 12 states and 205 transitions. [2024-06-27 22:02:13,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 484 transitions, 9643 flow [2024-06-27 22:02:14,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 484 transitions, 9309 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:02:14,290 INFO L231 Difference]: Finished difference. Result has 294 places, 448 transitions, 8056 flow [2024-06-27 22:02:14,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7839, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8056, PETRI_PLACES=294, PETRI_TRANSITIONS=448} [2024-06-27 22:02:14,291 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 22:02:14,291 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 448 transitions, 8056 flow [2024-06-27 22:02:14,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:14,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:14,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:14,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:02:14,292 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:14,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 161894477, now seen corresponding path program 9 times [2024-06-27 22:02:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:14,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627292347] [2024-06-27 22:02:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627292347] [2024-06-27 22:02:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627292347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171122722] [2024-06-27 22:02:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:15,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:02:15,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 448 transitions, 8056 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:15,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:15,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:02:15,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:16,385 INFO L124 PetriNetUnfolderBase]: 1292/2542 cut-off events. [2024-06-27 22:02:16,386 INFO L125 PetriNetUnfolderBase]: For 108291/108293 co-relation queries the response was YES. [2024-06-27 22:02:16,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 2542 events. 1292/2542 cut-off events. For 108291/108293 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17368 event pairs, 165 based on Foata normal form. 1/2432 useless extension candidates. Maximal degree in co-relation 21531. Up to 1683 conditions per place. [2024-06-27 22:02:16,413 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 336 selfloop transitions, 128 changer transitions 0/479 dead transitions. [2024-06-27 22:02:16,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 479 transitions, 9499 flow [2024-06-27 22:02:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 22:02:16,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709459459459459 [2024-06-27 22:02:16,414 INFO L175 Difference]: Start difference. First operand has 294 places, 448 transitions, 8056 flow. Second operand 8 states and 169 transitions. [2024-06-27 22:02:16,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 479 transitions, 9499 flow [2024-06-27 22:02:17,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 479 transitions, 9348 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 22:02:17,016 INFO L231 Difference]: Finished difference. Result has 297 places, 455 transitions, 8365 flow [2024-06-27 22:02:17,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7917, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8365, PETRI_PLACES=297, PETRI_TRANSITIONS=455} [2024-06-27 22:02:17,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 22:02:17,016 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 455 transitions, 8365 flow [2024-06-27 22:02:17,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:17,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:17,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:17,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:02:17,017 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:17,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1548320239, now seen corresponding path program 4 times [2024-06-27 22:02:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076344157] [2024-06-27 22:02:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076344157] [2024-06-27 22:02:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076344157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:19,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:19,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589457101] [2024-06-27 22:02:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:19,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:19,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 455 transitions, 8365 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:19,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:19,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:19,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:20,838 INFO L124 PetriNetUnfolderBase]: 1405/2685 cut-off events. [2024-06-27 22:02:20,838 INFO L125 PetriNetUnfolderBase]: For 112406/112406 co-relation queries the response was YES. [2024-06-27 22:02:20,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23701 conditions, 2685 events. 1405/2685 cut-off events. For 112406/112406 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17725 event pairs, 235 based on Foata normal form. 1/2596 useless extension candidates. Maximal degree in co-relation 23559. Up to 2138 conditions per place. [2024-06-27 22:02:20,863 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 439 selfloop transitions, 35 changer transitions 0/482 dead transitions. [2024-06-27 22:02:20,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 482 transitions, 9564 flow [2024-06-27 22:02:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:02:20,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:02:20,864 INFO L175 Difference]: Start difference. First operand has 297 places, 455 transitions, 8365 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:02:20,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 482 transitions, 9564 flow [2024-06-27 22:02:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 482 transitions, 9356 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:21,433 INFO L231 Difference]: Finished difference. Result has 303 places, 455 transitions, 8233 flow [2024-06-27 22:02:21,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8157, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8233, PETRI_PLACES=303, PETRI_TRANSITIONS=455} [2024-06-27 22:02:21,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 22:02:21,434 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 455 transitions, 8233 flow [2024-06-27 22:02:21,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:21,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:21,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:02:21,434 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:21,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -365969895, now seen corresponding path program 10 times [2024-06-27 22:02:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980590105] [2024-06-27 22:02:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980590105] [2024-06-27 22:02:22,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980590105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:22,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:02:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810288054] [2024-06-27 22:02:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:22,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:02:22,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:22,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:02:22,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:02:22,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:02:22,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 455 transitions, 8233 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:22,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:22,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:02:22,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:23,385 INFO L124 PetriNetUnfolderBase]: 1285/2536 cut-off events. [2024-06-27 22:02:23,386 INFO L125 PetriNetUnfolderBase]: For 109392/109394 co-relation queries the response was YES. [2024-06-27 22:02:23,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21440 conditions, 2536 events. 1285/2536 cut-off events. For 109392/109394 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17337 event pairs, 186 based on Foata normal form. 2/2426 useless extension candidates. Maximal degree in co-relation 21297. Up to 1732 conditions per place. [2024-06-27 22:02:23,412 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 348 selfloop transitions, 116 changer transitions 0/479 dead transitions. [2024-06-27 22:02:23,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 479 transitions, 9333 flow [2024-06-27 22:02:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:02:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:02:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 22:02:23,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574324324324325 [2024-06-27 22:02:23,413 INFO L175 Difference]: Start difference. First operand has 303 places, 455 transitions, 8233 flow. Second operand 8 states and 165 transitions. [2024-06-27 22:02:23,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 479 transitions, 9333 flow [2024-06-27 22:02:23,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 479 transitions, 9185 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 22:02:23,940 INFO L231 Difference]: Finished difference. Result has 305 places, 459 transitions, 8431 flow [2024-06-27 22:02:23,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8431, PETRI_PLACES=305, PETRI_TRANSITIONS=459} [2024-06-27 22:02:23,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 22:02:23,941 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 459 transitions, 8431 flow [2024-06-27 22:02:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:23,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:23,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:23,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:02:23,941 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:23,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -743811445, now seen corresponding path program 10 times [2024-06-27 22:02:23,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:23,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354236189] [2024-06-27 22:02:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354236189] [2024-06-27 22:02:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354236189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:25,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684101934] [2024-06-27 22:02:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:25,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:25,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:25,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:25,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 459 transitions, 8431 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:25,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:25,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:25,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:26,364 INFO L124 PetriNetUnfolderBase]: 1419/2721 cut-off events. [2024-06-27 22:02:26,365 INFO L125 PetriNetUnfolderBase]: For 112008/112008 co-relation queries the response was YES. [2024-06-27 22:02:26,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23792 conditions, 2721 events. 1419/2721 cut-off events. For 112008/112008 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18017 event pairs, 131 based on Foata normal form. 1/2629 useless extension candidates. Maximal degree in co-relation 23646. Up to 2104 conditions per place. [2024-06-27 22:02:26,395 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 403 selfloop transitions, 87 changer transitions 0/498 dead transitions. [2024-06-27 22:02:26,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 498 transitions, 9761 flow [2024-06-27 22:02:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:02:26,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:02:26,397 INFO L175 Difference]: Start difference. First operand has 305 places, 459 transitions, 8431 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:02:26,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 498 transitions, 9761 flow [2024-06-27 22:02:27,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 498 transitions, 9536 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:27,060 INFO L231 Difference]: Finished difference. Result has 312 places, 467 transitions, 8615 flow [2024-06-27 22:02:27,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8206, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8615, PETRI_PLACES=312, PETRI_TRANSITIONS=467} [2024-06-27 22:02:27,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 22:02:27,061 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 467 transitions, 8615 flow [2024-06-27 22:02:27,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:27,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:27,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:27,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:02:27,061 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:27,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2025288901, now seen corresponding path program 11 times [2024-06-27 22:02:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085199020] [2024-06-27 22:02:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:27,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085199020] [2024-06-27 22:02:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085199020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:28,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:28,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:28,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380328105] [2024-06-27 22:02:28,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:28,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:28,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:28,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:28,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 467 transitions, 8615 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:28,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:29,605 INFO L124 PetriNetUnfolderBase]: 1455/2811 cut-off events. [2024-06-27 22:02:29,605 INFO L125 PetriNetUnfolderBase]: For 114620/114620 co-relation queries the response was YES. [2024-06-27 22:02:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24468 conditions, 2811 events. 1455/2811 cut-off events. For 114620/114620 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18961 event pairs, 155 based on Foata normal form. 1/2713 useless extension candidates. Maximal degree in co-relation 24320. Up to 2104 conditions per place. [2024-06-27 22:02:29,634 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 398 selfloop transitions, 109 changer transitions 0/515 dead transitions. [2024-06-27 22:02:29,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 515 transitions, 10187 flow [2024-06-27 22:02:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:02:29,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:02:29,635 INFO L175 Difference]: Start difference. First operand has 312 places, 467 transitions, 8615 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:02:29,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 515 transitions, 10187 flow [2024-06-27 22:02:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 515 transitions, 10022 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:30,227 INFO L231 Difference]: Finished difference. Result has 317 places, 483 transitions, 9159 flow [2024-06-27 22:02:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8450, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9159, PETRI_PLACES=317, PETRI_TRANSITIONS=483} [2024-06-27 22:02:30,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 22:02:30,227 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 483 transitions, 9159 flow [2024-06-27 22:02:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:30,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:30,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:30,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:02:30,228 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:30,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash -794591983, now seen corresponding path program 12 times [2024-06-27 22:02:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:30,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265548099] [2024-06-27 22:02:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:32,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265548099] [2024-06-27 22:02:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265548099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:32,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:32,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301621109] [2024-06-27 22:02:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:32,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:32,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:32,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:32,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:32,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:32,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 483 transitions, 9159 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:32,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:32,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:32,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:33,259 INFO L124 PetriNetUnfolderBase]: 1469/2845 cut-off events. [2024-06-27 22:02:33,259 INFO L125 PetriNetUnfolderBase]: For 118765/118765 co-relation queries the response was YES. [2024-06-27 22:02:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24985 conditions, 2845 events. 1469/2845 cut-off events. For 118765/118765 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19267 event pairs, 181 based on Foata normal form. 1/2744 useless extension candidates. Maximal degree in co-relation 24835. Up to 2181 conditions per place. [2024-06-27 22:02:33,288 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 423 selfloop transitions, 90 changer transitions 0/521 dead transitions. [2024-06-27 22:02:33,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 521 transitions, 10579 flow [2024-06-27 22:02:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:02:33,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 22:02:33,289 INFO L175 Difference]: Start difference. First operand has 317 places, 483 transitions, 9159 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:02:33,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 521 transitions, 10579 flow [2024-06-27 22:02:33,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 521 transitions, 10263 flow, removed 111 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:33,974 INFO L231 Difference]: Finished difference. Result has 321 places, 493 transitions, 9346 flow [2024-06-27 22:02:33,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8865, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9346, PETRI_PLACES=321, PETRI_TRANSITIONS=493} [2024-06-27 22:02:33,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 22:02:33,975 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 493 transitions, 9346 flow [2024-06-27 22:02:33,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:33,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:33,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:33,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:02:33,975 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:33,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -794585473, now seen corresponding path program 13 times [2024-06-27 22:02:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523749130] [2024-06-27 22:02:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523749130] [2024-06-27 22:02:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523749130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:35,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316522569] [2024-06-27 22:02:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:35,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:35,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 493 transitions, 9346 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:35,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:35,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:35,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:36,542 INFO L124 PetriNetUnfolderBase]: 1518/2974 cut-off events. [2024-06-27 22:02:36,542 INFO L125 PetriNetUnfolderBase]: For 121696/121696 co-relation queries the response was YES. [2024-06-27 22:02:36,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25870 conditions, 2974 events. 1518/2974 cut-off events. For 121696/121696 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20677 event pairs, 181 based on Foata normal form. 1/2865 useless extension candidates. Maximal degree in co-relation 25718. Up to 2194 conditions per place. [2024-06-27 22:02:36,575 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 418 selfloop transitions, 119 changer transitions 0/545 dead transitions. [2024-06-27 22:02:36,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 545 transitions, 11094 flow [2024-06-27 22:02:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:02:36,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-06-27 22:02:36,576 INFO L175 Difference]: Start difference. First operand has 321 places, 493 transitions, 9346 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:02:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 545 transitions, 11094 flow [2024-06-27 22:02:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 545 transitions, 10827 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 22:02:37,240 INFO L231 Difference]: Finished difference. Result has 323 places, 516 transitions, 9988 flow [2024-06-27 22:02:37,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9095, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9988, PETRI_PLACES=323, PETRI_TRANSITIONS=516} [2024-06-27 22:02:37,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 22:02:37,240 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 516 transitions, 9988 flow [2024-06-27 22:02:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:37,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:37,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:02:37,241 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -649570573, now seen corresponding path program 14 times [2024-06-27 22:02:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:37,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749447867] [2024-06-27 22:02:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:37,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:39,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749447867] [2024-06-27 22:02:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749447867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:39,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:39,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:39,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187022992] [2024-06-27 22:02:39,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:39,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:39,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:39,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 516 transitions, 9988 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:39,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:39,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:39,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:40,353 INFO L124 PetriNetUnfolderBase]: 1565/3089 cut-off events. [2024-06-27 22:02:40,353 INFO L125 PetriNetUnfolderBase]: For 128268/128268 co-relation queries the response was YES. [2024-06-27 22:02:40,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27039 conditions, 3089 events. 1565/3089 cut-off events. For 128268/128268 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 21834 event pairs, 170 based on Foata normal form. 1/2972 useless extension candidates. Maximal degree in co-relation 26886. Up to 2047 conditions per place. [2024-06-27 22:02:40,391 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 359 selfloop transitions, 206 changer transitions 0/573 dead transitions. [2024-06-27 22:02:40,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 573 transitions, 12040 flow [2024-06-27 22:02:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:02:40,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 22:02:40,392 INFO L175 Difference]: Start difference. First operand has 323 places, 516 transitions, 9988 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:02:40,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 573 transitions, 12040 flow [2024-06-27 22:02:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 573 transitions, 11778 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-06-27 22:02:41,202 INFO L231 Difference]: Finished difference. Result has 330 places, 539 transitions, 10862 flow [2024-06-27 22:02:41,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9726, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10862, PETRI_PLACES=330, PETRI_TRANSITIONS=539} [2024-06-27 22:02:41,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-27 22:02:41,203 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 539 transitions, 10862 flow [2024-06-27 22:02:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:41,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:41,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:02:41,203 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:41,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -649807723, now seen corresponding path program 15 times [2024-06-27 22:02:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229085307] [2024-06-27 22:02:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229085307] [2024-06-27 22:02:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229085307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:02:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180464209] [2024-06-27 22:02:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:42,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:02:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:02:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:02:42,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:42,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 539 transitions, 10862 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:42,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:42,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:42,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:43,899 INFO L124 PetriNetUnfolderBase]: 1562/3084 cut-off events. [2024-06-27 22:02:43,899 INFO L125 PetriNetUnfolderBase]: For 131399/131399 co-relation queries the response was YES. [2024-06-27 22:02:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27579 conditions, 3084 events. 1562/3084 cut-off events. For 131399/131399 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21791 event pairs, 183 based on Foata normal form. 1/2967 useless extension candidates. Maximal degree in co-relation 27421. Up to 2275 conditions per place. [2024-06-27 22:02:43,934 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 444 selfloop transitions, 115 changer transitions 0/567 dead transitions. [2024-06-27 22:02:43,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 567 transitions, 12154 flow [2024-06-27 22:02:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:02:43,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:02:43,935 INFO L175 Difference]: Start difference. First operand has 330 places, 539 transitions, 10862 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:02:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 567 transitions, 12154 flow [2024-06-27 22:02:44,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 567 transitions, 11261 flow, removed 158 selfloop flow, removed 8 redundant places. [2024-06-27 22:02:44,741 INFO L231 Difference]: Finished difference. Result has 332 places, 540 transitions, 10284 flow [2024-06-27 22:02:44,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9997, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10284, PETRI_PLACES=332, PETRI_TRANSITIONS=540} [2024-06-27 22:02:44,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 22:02:44,742 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 540 transitions, 10284 flow [2024-06-27 22:02:44,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:44,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:44,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:44,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:02:44,742 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:44,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1430670383, now seen corresponding path program 16 times [2024-06-27 22:02:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722233269] [2024-06-27 22:02:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722233269] [2024-06-27 22:02:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722233269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644475522] [2024-06-27 22:02:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:46,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:46,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:46,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:46,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 540 transitions, 10284 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:46,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:46,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:47,622 INFO L124 PetriNetUnfolderBase]: 1566/3095 cut-off events. [2024-06-27 22:02:47,623 INFO L125 PetriNetUnfolderBase]: For 124543/124543 co-relation queries the response was YES. [2024-06-27 22:02:47,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26627 conditions, 3095 events. 1566/3095 cut-off events. For 124543/124543 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21906 event pairs, 181 based on Foata normal form. 1/2978 useless extension candidates. Maximal degree in co-relation 26469. Up to 2248 conditions per place. [2024-06-27 22:02:47,660 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 435 selfloop transitions, 132 changer transitions 0/575 dead transitions. [2024-06-27 22:02:47,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 575 transitions, 11737 flow [2024-06-27 22:02:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:02:47,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 22:02:47,661 INFO L175 Difference]: Start difference. First operand has 332 places, 540 transitions, 10284 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:02:47,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 575 transitions, 11737 flow [2024-06-27 22:02:48,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 575 transitions, 11419 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:48,599 INFO L231 Difference]: Finished difference. Result has 337 places, 547 transitions, 10488 flow [2024-06-27 22:02:48,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9976, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10488, PETRI_PLACES=337, PETRI_TRANSITIONS=547} [2024-06-27 22:02:48,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 22:02:48,600 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 547 transitions, 10488 flow [2024-06-27 22:02:48,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:48,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:48,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:02:48,600 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:48,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2098756271, now seen corresponding path program 1 times [2024-06-27 22:02:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209854196] [2024-06-27 22:02:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209854196] [2024-06-27 22:02:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209854196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:02:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268034509] [2024-06-27 22:02:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:02:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:02:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:02:48,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 22:02:48,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 547 transitions, 10488 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:48,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:48,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 22:02:48,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:49,037 INFO L124 PetriNetUnfolderBase]: 768/1548 cut-off events. [2024-06-27 22:02:49,037 INFO L125 PetriNetUnfolderBase]: For 74115/74169 co-relation queries the response was YES. [2024-06-27 22:02:49,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14695 conditions, 1548 events. 768/1548 cut-off events. For 74115/74169 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9672 event pairs, 182 based on Foata normal form. 125/1599 useless extension candidates. Maximal degree in co-relation 14536. Up to 537 conditions per place. [2024-06-27 22:02:49,054 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 143 selfloop transitions, 73 changer transitions 0/312 dead transitions. [2024-06-27 22:02:49,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 312 transitions, 6612 flow [2024-06-27 22:02:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:02:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:02:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 22:02:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 22:02:49,055 INFO L175 Difference]: Start difference. First operand has 337 places, 547 transitions, 10488 flow. Second operand 4 states and 103 transitions. [2024-06-27 22:02:49,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 312 transitions, 6612 flow [2024-06-27 22:02:49,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 312 transitions, 4615 flow, removed 156 selfloop flow, removed 80 redundant places. [2024-06-27 22:02:49,448 INFO L231 Difference]: Finished difference. Result has 261 places, 299 transitions, 4321 flow [2024-06-27 22:02:49,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4321, PETRI_PLACES=261, PETRI_TRANSITIONS=299} [2024-06-27 22:02:49,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 22:02:49,449 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 299 transitions, 4321 flow [2024-06-27 22:02:49,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:49,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:49,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:02:49,449 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:49,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -135348374, now seen corresponding path program 1 times [2024-06-27 22:02:49,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:49,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401680421] [2024-06-27 22:02:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:50,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401680421] [2024-06-27 22:02:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401680421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:50,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502525704] [2024-06-27 22:02:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:50,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:50,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:50,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:50,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 299 transitions, 4321 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:50,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:50,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:50,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:51,388 INFO L124 PetriNetUnfolderBase]: 829/1527 cut-off events. [2024-06-27 22:02:51,388 INFO L125 PetriNetUnfolderBase]: For 81317/81317 co-relation queries the response was YES. [2024-06-27 22:02:51,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12556 conditions, 1527 events. 829/1527 cut-off events. For 81317/81317 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8326 event pairs, 114 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 12427. Up to 1254 conditions per place. [2024-06-27 22:02:51,401 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 52 changer transitions 0/317 dead transitions. [2024-06-27 22:02:51,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 317 transitions, 5049 flow [2024-06-27 22:02:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:02:51,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:02:51,402 INFO L175 Difference]: Start difference. First operand has 261 places, 299 transitions, 4321 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:02:51,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 317 transitions, 5049 flow [2024-06-27 22:02:51,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 317 transitions, 5035 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:02:51,758 INFO L231 Difference]: Finished difference. Result has 267 places, 301 transitions, 4468 flow [2024-06-27 22:02:51,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4468, PETRI_PLACES=267, PETRI_TRANSITIONS=301} [2024-06-27 22:02:51,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 22:02:51,759 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 301 transitions, 4468 flow [2024-06-27 22:02:51,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:51,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:51,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:02:51,759 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:51,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2112157418, now seen corresponding path program 2 times [2024-06-27 22:02:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:51,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030621682] [2024-06-27 22:02:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030621682] [2024-06-27 22:02:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030621682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:52,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141874309] [2024-06-27 22:02:52,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:53,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:53,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 301 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:53,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:53,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:53,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:53,662 INFO L124 PetriNetUnfolderBase]: 842/1546 cut-off events. [2024-06-27 22:02:53,662 INFO L125 PetriNetUnfolderBase]: For 85140/85140 co-relation queries the response was YES. [2024-06-27 22:02:53,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12905 conditions, 1546 events. 842/1546 cut-off events. For 85140/85140 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8467 event pairs, 109 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 12773. Up to 1291 conditions per place. [2024-06-27 22:02:53,677 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 43 changer transitions 0/319 dead transitions. [2024-06-27 22:02:53,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 319 transitions, 5200 flow [2024-06-27 22:02:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:02:53,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:02:53,678 INFO L175 Difference]: Start difference. First operand has 267 places, 301 transitions, 4468 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:02:53,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 319 transitions, 5200 flow [2024-06-27 22:02:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 319 transitions, 5059 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:02:54,062 INFO L231 Difference]: Finished difference. Result has 270 places, 303 transitions, 4474 flow [2024-06-27 22:02:54,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4474, PETRI_PLACES=270, PETRI_TRANSITIONS=303} [2024-06-27 22:02:54,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 22:02:54,062 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 303 transitions, 4474 flow [2024-06-27 22:02:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:54,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:54,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:54,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:02:54,063 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:54,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2109270698, now seen corresponding path program 3 times [2024-06-27 22:02:54,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:54,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130214409] [2024-06-27 22:02:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:54,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130214409] [2024-06-27 22:02:55,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130214409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:55,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:55,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760357659] [2024-06-27 22:02:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:55,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:02:55,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 303 transitions, 4474 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:55,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:55,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:02:55,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:55,905 INFO L124 PetriNetUnfolderBase]: 869/1616 cut-off events. [2024-06-27 22:02:55,905 INFO L125 PetriNetUnfolderBase]: For 88785/88785 co-relation queries the response was YES. [2024-06-27 22:02:55,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13182 conditions, 1616 events. 869/1616 cut-off events. For 88785/88785 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8962 event pairs, 80 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 13049. Up to 1322 conditions per place. [2024-06-27 22:02:55,921 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 39 changer transitions 0/326 dead transitions. [2024-06-27 22:02:55,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 326 transitions, 5272 flow [2024-06-27 22:02:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:02:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:02:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:02:55,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:02:55,921 INFO L175 Difference]: Start difference. First operand has 270 places, 303 transitions, 4474 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:02:55,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 326 transitions, 5272 flow [2024-06-27 22:02:56,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 326 transitions, 5132 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 22:02:56,247 INFO L231 Difference]: Finished difference. Result has 272 places, 307 transitions, 4518 flow [2024-06-27 22:02:56,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4518, PETRI_PLACES=272, PETRI_TRANSITIONS=307} [2024-06-27 22:02:56,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-27 22:02:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 307 transitions, 4518 flow [2024-06-27 22:02:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:56,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:56,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:02:56,248 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2066417216, now seen corresponding path program 1 times [2024-06-27 22:02:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894687988] [2024-06-27 22:02:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:56,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:02:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:02:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:02:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894687988] [2024-06-27 22:02:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894687988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:02:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:02:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:02:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927848587] [2024-06-27 22:02:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:02:58,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:02:58,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:02:58,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:02:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:02:58,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:02:58,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 307 transitions, 4518 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:58,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:02:58,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:02:58,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:02:59,010 INFO L124 PetriNetUnfolderBase]: 756/1447 cut-off events. [2024-06-27 22:02:59,010 INFO L125 PetriNetUnfolderBase]: For 103253/103267 co-relation queries the response was YES. [2024-06-27 22:02:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12658 conditions, 1447 events. 756/1447 cut-off events. For 103253/103267 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8248 event pairs, 112 based on Foata normal form. 7/1324 useless extension candidates. Maximal degree in co-relation 12524. Up to 1039 conditions per place. [2024-06-27 22:02:59,024 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 214 selfloop transitions, 103 changer transitions 0/332 dead transitions. [2024-06-27 22:02:59,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 332 transitions, 5720 flow [2024-06-27 22:02:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:02:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:02:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:02:59,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:02:59,025 INFO L175 Difference]: Start difference. First operand has 272 places, 307 transitions, 4518 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:02:59,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 332 transitions, 5720 flow [2024-06-27 22:02:59,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 332 transitions, 5594 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 22:02:59,472 INFO L231 Difference]: Finished difference. Result has 276 places, 317 transitions, 4886 flow [2024-06-27 22:02:59,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4886, PETRI_PLACES=276, PETRI_TRANSITIONS=317} [2024-06-27 22:02:59,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-27 22:02:59,472 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 317 transitions, 4886 flow [2024-06-27 22:02:59,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:02:59,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:02:59,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:02:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:02:59,473 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:02:59,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:02:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2002495708, now seen corresponding path program 2 times [2024-06-27 22:02:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:02:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485007647] [2024-06-27 22:02:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:02:59,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:02:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485007647] [2024-06-27 22:03:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485007647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:03:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136611709] [2024-06-27 22:03:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:01,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:03:01,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:03:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:03:01,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:01,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 317 transitions, 4886 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:01,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:01,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:01,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:02,339 INFO L124 PetriNetUnfolderBase]: 758/1450 cut-off events. [2024-06-27 22:03:02,339 INFO L125 PetriNetUnfolderBase]: For 102655/102669 co-relation queries the response was YES. [2024-06-27 22:03:02,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 1450 events. 758/1450 cut-off events. For 102655/102669 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8259 event pairs, 115 based on Foata normal form. 7/1325 useless extension candidates. Maximal degree in co-relation 12730. Up to 1069 conditions per place. [2024-06-27 22:03:02,352 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 210 selfloop transitions, 106 changer transitions 0/331 dead transitions. [2024-06-27 22:03:02,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 331 transitions, 5582 flow [2024-06-27 22:03:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:03:02,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:03:02,353 INFO L175 Difference]: Start difference. First operand has 276 places, 317 transitions, 4886 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:03:02,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 331 transitions, 5582 flow [2024-06-27 22:03:02,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 331 transitions, 5424 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:03:02,853 INFO L231 Difference]: Finished difference. Result has 282 places, 318 transitions, 4979 flow [2024-06-27 22:03:02,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4979, PETRI_PLACES=282, PETRI_TRANSITIONS=318} [2024-06-27 22:03:02,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 22:03:02,853 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 318 transitions, 4979 flow [2024-06-27 22:03:02,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:02,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:02,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:02,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:03:02,854 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:02,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:02,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1379558823, now seen corresponding path program 1 times [2024-06-27 22:03:02,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:02,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303208529] [2024-06-27 22:03:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:04,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:04,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303208529] [2024-06-27 22:03:04,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303208529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:04,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:04,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:04,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857688670] [2024-06-27 22:03:04,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:04,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:05,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:05,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 318 transitions, 4979 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:05,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:05,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:05,556 INFO L124 PetriNetUnfolderBase]: 751/1458 cut-off events. [2024-06-27 22:03:05,556 INFO L125 PetriNetUnfolderBase]: For 101491/101505 co-relation queries the response was YES. [2024-06-27 22:03:05,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12706 conditions, 1458 events. 751/1458 cut-off events. For 101491/101505 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8295 event pairs, 85 based on Foata normal form. 8/1332 useless extension candidates. Maximal degree in co-relation 12567. Up to 1072 conditions per place. [2024-06-27 22:03:05,569 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 217 selfloop transitions, 99 changer transitions 0/331 dead transitions. [2024-06-27 22:03:05,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 331 transitions, 5643 flow [2024-06-27 22:03:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:03:05,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:03:05,570 INFO L175 Difference]: Start difference. First operand has 282 places, 318 transitions, 4979 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:03:05,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 331 transitions, 5643 flow [2024-06-27 22:03:05,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 331 transitions, 5408 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:06,000 INFO L231 Difference]: Finished difference. Result has 284 places, 318 transitions, 4949 flow [2024-06-27 22:03:06,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4744, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4949, PETRI_PLACES=284, PETRI_TRANSITIONS=318} [2024-06-27 22:03:06,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-27 22:03:06,001 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 318 transitions, 4949 flow [2024-06-27 22:03:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:06,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:06,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:06,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:03:06,001 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1572688106, now seen corresponding path program 4 times [2024-06-27 22:03:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:06,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702165946] [2024-06-27 22:03:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702165946] [2024-06-27 22:03:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702165946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:07,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:07,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845451789] [2024-06-27 22:03:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:07,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:07,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:03:07,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 318 transitions, 4949 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:07,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:07,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:03:07,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:08,145 INFO L124 PetriNetUnfolderBase]: 925/1694 cut-off events. [2024-06-27 22:03:08,145 INFO L125 PetriNetUnfolderBase]: For 103974/103974 co-relation queries the response was YES. [2024-06-27 22:03:08,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14531 conditions, 1694 events. 925/1694 cut-off events. For 103974/103974 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9503 event pairs, 116 based on Foata normal form. 2/1585 useless extension candidates. Maximal degree in co-relation 14391. Up to 1396 conditions per place. [2024-06-27 22:03:08,161 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 59 changer transitions 0/336 dead transitions. [2024-06-27 22:03:08,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 336 transitions, 5731 flow [2024-06-27 22:03:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:03:08,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:03:08,161 INFO L175 Difference]: Start difference. First operand has 284 places, 318 transitions, 4949 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:03:08,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 336 transitions, 5731 flow [2024-06-27 22:03:08,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 336 transitions, 5502 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:08,686 INFO L231 Difference]: Finished difference. Result has 286 places, 320 transitions, 4906 flow [2024-06-27 22:03:08,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4906, PETRI_PLACES=286, PETRI_TRANSITIONS=320} [2024-06-27 22:03:08,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-27 22:03:08,686 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 320 transitions, 4906 flow [2024-06-27 22:03:08,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:08,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:08,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:03:08,687 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:08,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1572895868, now seen corresponding path program 3 times [2024-06-27 22:03:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102069846] [2024-06-27 22:03:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102069846] [2024-06-27 22:03:11,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102069846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:11,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:11,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:03:11,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748897448] [2024-06-27 22:03:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:11,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:03:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:03:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:03:11,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:11,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 320 transitions, 4906 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:11,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:11,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:11,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:11,954 INFO L124 PetriNetUnfolderBase]: 796/1537 cut-off events. [2024-06-27 22:03:11,954 INFO L125 PetriNetUnfolderBase]: For 115686/115700 co-relation queries the response was YES. [2024-06-27 22:03:11,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13607 conditions, 1537 events. 796/1537 cut-off events. For 115686/115700 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8834 event pairs, 92 based on Foata normal form. 7/1396 useless extension candidates. Maximal degree in co-relation 13466. Up to 1131 conditions per place. [2024-06-27 22:03:11,969 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 229 selfloop transitions, 96 changer transitions 0/340 dead transitions. [2024-06-27 22:03:11,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 340 transitions, 6082 flow [2024-06-27 22:03:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:03:11,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:03:11,970 INFO L175 Difference]: Start difference. First operand has 286 places, 320 transitions, 4906 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:03:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 340 transitions, 6082 flow [2024-06-27 22:03:12,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 340 transitions, 5914 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:12,472 INFO L231 Difference]: Finished difference. Result has 287 places, 327 transitions, 5111 flow [2024-06-27 22:03:12,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5111, PETRI_PLACES=287, PETRI_TRANSITIONS=327} [2024-06-27 22:03:12,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:03:12,473 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 327 transitions, 5111 flow [2024-06-27 22:03:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:12,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:12,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:03:12,473 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:12,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1572903308, now seen corresponding path program 4 times [2024-06-27 22:03:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594551660] [2024-06-27 22:03:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594551660] [2024-06-27 22:03:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594551660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:14,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455484634] [2024-06-27 22:03:14,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:14,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:14,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:14,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 327 transitions, 5111 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:14,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:14,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:14,913 INFO L124 PetriNetUnfolderBase]: 793/1534 cut-off events. [2024-06-27 22:03:14,913 INFO L125 PetriNetUnfolderBase]: For 114618/114632 co-relation queries the response was YES. [2024-06-27 22:03:14,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13475 conditions, 1534 events. 793/1534 cut-off events. For 114618/114632 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8834 event pairs, 92 based on Foata normal form. 8/1394 useless extension candidates. Maximal degree in co-relation 13333. Up to 1130 conditions per place. [2024-06-27 22:03:14,926 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 98 changer transitions 0/339 dead transitions. [2024-06-27 22:03:14,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 339 transitions, 5953 flow [2024-06-27 22:03:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:03:14,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:03:14,927 INFO L175 Difference]: Start difference. First operand has 287 places, 327 transitions, 5111 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:03:14,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 339 transitions, 5953 flow [2024-06-27 22:03:15,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 339 transitions, 5698 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:15,471 INFO L231 Difference]: Finished difference. Result has 292 places, 327 transitions, 5059 flow [2024-06-27 22:03:15,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4856, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=292, PETRI_TRANSITIONS=327} [2024-06-27 22:03:15,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-27 22:03:15,472 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 327 transitions, 5059 flow [2024-06-27 22:03:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:15,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:15,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:03:15,473 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:15,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1865655702, now seen corresponding path program 5 times [2024-06-27 22:03:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992438142] [2024-06-27 22:03:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992438142] [2024-06-27 22:03:17,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992438142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:17,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:17,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:17,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553721004] [2024-06-27 22:03:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:17,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:17,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 327 transitions, 5059 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:17,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:17,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:17,941 INFO L124 PetriNetUnfolderBase]: 848/1608 cut-off events. [2024-06-27 22:03:17,941 INFO L125 PetriNetUnfolderBase]: For 128564/128578 co-relation queries the response was YES. [2024-06-27 22:03:17,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14424 conditions, 1608 events. 848/1608 cut-off events. For 128564/128578 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9307 event pairs, 116 based on Foata normal form. 8/1451 useless extension candidates. Maximal degree in co-relation 14281. Up to 1069 conditions per place. [2024-06-27 22:03:17,957 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 203 selfloop transitions, 134 changer transitions 0/352 dead transitions. [2024-06-27 22:03:17,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 352 transitions, 6362 flow [2024-06-27 22:03:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:03:17,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:03:17,959 INFO L175 Difference]: Start difference. First operand has 292 places, 327 transitions, 5059 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:03:17,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 352 transitions, 6362 flow [2024-06-27 22:03:18,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 352 transitions, 6168 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:18,550 INFO L231 Difference]: Finished difference. Result has 295 places, 337 transitions, 5424 flow [2024-06-27 22:03:18,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4866, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5424, PETRI_PLACES=295, PETRI_TRANSITIONS=337} [2024-06-27 22:03:18,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 22:03:18,551 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 337 transitions, 5424 flow [2024-06-27 22:03:18,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:18,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:18,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:03:18,551 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:18,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1873064733, now seen corresponding path program 2 times [2024-06-27 22:03:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235861183] [2024-06-27 22:03:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235861183] [2024-06-27 22:03:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235861183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:20,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:03:20,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283081518] [2024-06-27 22:03:20,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:03:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:03:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:03:20,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:20,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 337 transitions, 5424 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:20,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:21,532 INFO L124 PetriNetUnfolderBase]: 842/1615 cut-off events. [2024-06-27 22:03:21,532 INFO L125 PetriNetUnfolderBase]: For 126831/126845 co-relation queries the response was YES. [2024-06-27 22:03:21,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14661 conditions, 1615 events. 842/1615 cut-off events. For 126831/126845 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9331 event pairs, 89 based on Foata normal form. 7/1454 useless extension candidates. Maximal degree in co-relation 14516. Up to 1264 conditions per place. [2024-06-27 22:03:21,545 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 261 selfloop transitions, 72 changer transitions 0/348 dead transitions. [2024-06-27 22:03:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 348 transitions, 6116 flow [2024-06-27 22:03:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:03:21,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:03:21,546 INFO L175 Difference]: Start difference. First operand has 295 places, 337 transitions, 5424 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:03:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 348 transitions, 6116 flow [2024-06-27 22:03:22,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 348 transitions, 5889 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 22:03:22,181 INFO L231 Difference]: Finished difference. Result has 299 places, 337 transitions, 5346 flow [2024-06-27 22:03:22,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5346, PETRI_PLACES=299, PETRI_TRANSITIONS=337} [2024-06-27 22:03:22,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 22:03:22,182 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 337 transitions, 5346 flow [2024-06-27 22:03:22,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:22,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:22,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:22,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:03:22,183 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:22,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1865645782, now seen corresponding path program 1 times [2024-06-27 22:03:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:22,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942982903] [2024-06-27 22:03:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:22,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:24,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942982903] [2024-06-27 22:03:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942982903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476191565] [2024-06-27 22:03:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:24,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:24,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:24,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 337 transitions, 5346 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:24,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:24,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:25,305 INFO L124 PetriNetUnfolderBase]: 857/1657 cut-off events. [2024-06-27 22:03:25,305 INFO L125 PetriNetUnfolderBase]: For 131572/131587 co-relation queries the response was YES. [2024-06-27 22:03:25,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 1657 events. 857/1657 cut-off events. For 131572/131587 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9713 event pairs, 110 based on Foata normal form. 2/1488 useless extension candidates. Maximal degree in co-relation 14592. Up to 1352 conditions per place. [2024-06-27 22:03:25,321 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 309 selfloop transitions, 29 changer transitions 0/353 dead transitions. [2024-06-27 22:03:25,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 353 transitions, 6114 flow [2024-06-27 22:03:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:03:25,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:03:25,322 INFO L175 Difference]: Start difference. First operand has 299 places, 337 transitions, 5346 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:03:25,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 353 transitions, 6114 flow [2024-06-27 22:03:26,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 353 transitions, 5958 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:26,040 INFO L231 Difference]: Finished difference. Result has 303 places, 338 transitions, 5274 flow [2024-06-27 22:03:26,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5274, PETRI_PLACES=303, PETRI_TRANSITIONS=338} [2024-06-27 22:03:26,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 22:03:26,041 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 338 transitions, 5274 flow [2024-06-27 22:03:26,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:26,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:26,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:03:26,041 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:26,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053148, now seen corresponding path program 6 times [2024-06-27 22:03:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064738039] [2024-06-27 22:03:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:27,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:27,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064738039] [2024-06-27 22:03:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064738039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:27,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:03:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411088158] [2024-06-27 22:03:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:27,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:03:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:03:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:03:28,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:28,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 338 transitions, 5274 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:28,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:28,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:28,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:28,782 INFO L124 PetriNetUnfolderBase]: 872/1656 cut-off events. [2024-06-27 22:03:28,782 INFO L125 PetriNetUnfolderBase]: For 132825/132839 co-relation queries the response was YES. [2024-06-27 22:03:28,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14958 conditions, 1656 events. 872/1656 cut-off events. For 132825/132839 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9678 event pairs, 130 based on Foata normal form. 8/1491 useless extension candidates. Maximal degree in co-relation 14810. Up to 1045 conditions per place. [2024-06-27 22:03:28,798 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 201 selfloop transitions, 141 changer transitions 0/357 dead transitions. [2024-06-27 22:03:28,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 357 transitions, 6631 flow [2024-06-27 22:03:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:03:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:03:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:03:28,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 22:03:28,799 INFO L175 Difference]: Start difference. First operand has 303 places, 338 transitions, 5274 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:03:28,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 357 transitions, 6631 flow [2024-06-27 22:03:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 357 transitions, 6561 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:29,504 INFO L231 Difference]: Finished difference. Result has 304 places, 341 transitions, 5573 flow [2024-06-27 22:03:29,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5204, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5573, PETRI_PLACES=304, PETRI_TRANSITIONS=341} [2024-06-27 22:03:29,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:03:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 341 transitions, 5573 flow [2024-06-27 22:03:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:29,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:29,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:03:29,505 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:29,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1865922612, now seen corresponding path program 7 times [2024-06-27 22:03:29,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:29,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30459374] [2024-06-27 22:03:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30459374] [2024-06-27 22:03:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30459374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:32,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:32,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:32,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870226388] [2024-06-27 22:03:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:32,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:32,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:32,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:32,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 341 transitions, 5573 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:32,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:32,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:33,341 INFO L124 PetriNetUnfolderBase]: 871/1672 cut-off events. [2024-06-27 22:03:33,341 INFO L125 PetriNetUnfolderBase]: For 131039/131053 co-relation queries the response was YES. [2024-06-27 22:03:33,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 1672 events. 871/1672 cut-off events. For 131039/131053 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9739 event pairs, 101 based on Foata normal form. 7/1501 useless extension candidates. Maximal degree in co-relation 15044. Up to 1042 conditions per place. [2024-06-27 22:03:33,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 194 selfloop transitions, 147 changer transitions 0/356 dead transitions. [2024-06-27 22:03:33,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 356 transitions, 6698 flow [2024-06-27 22:03:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:03:33,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:03:33,359 INFO L175 Difference]: Start difference. First operand has 304 places, 341 transitions, 5573 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:03:33,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 356 transitions, 6698 flow [2024-06-27 22:03:34,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 356 transitions, 6364 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:34,071 INFO L231 Difference]: Finished difference. Result has 308 places, 343 transitions, 5603 flow [2024-06-27 22:03:34,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5244, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5603, PETRI_PLACES=308, PETRI_TRANSITIONS=343} [2024-06-27 22:03:34,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 22:03:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 343 transitions, 5603 flow [2024-06-27 22:03:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:34,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:34,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:03:34,072 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:34,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1539621358, now seen corresponding path program 5 times [2024-06-27 22:03:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019779332] [2024-06-27 22:03:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019779332] [2024-06-27 22:03:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019779332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:03:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847368425] [2024-06-27 22:03:35,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:35,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:03:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:03:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:03:35,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:03:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 343 transitions, 5603 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:03:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:36,275 INFO L124 PetriNetUnfolderBase]: 1038/1901 cut-off events. [2024-06-27 22:03:36,275 INFO L125 PetriNetUnfolderBase]: For 136463/136463 co-relation queries the response was YES. [2024-06-27 22:03:36,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16853 conditions, 1901 events. 1038/1901 cut-off events. For 136463/136463 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10927 event pairs, 141 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 16703. Up to 1505 conditions per place. [2024-06-27 22:03:36,293 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 271 selfloop transitions, 81 changer transitions 0/361 dead transitions. [2024-06-27 22:03:36,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 361 transitions, 6443 flow [2024-06-27 22:03:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:03:36,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:03:36,294 INFO L175 Difference]: Start difference. First operand has 308 places, 343 transitions, 5603 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:03:36,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 361 transitions, 6443 flow [2024-06-27 22:03:36,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 361 transitions, 6123 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:03:37,000 INFO L231 Difference]: Finished difference. Result has 311 places, 345 transitions, 5516 flow [2024-06-27 22:03:37,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5283, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5516, PETRI_PLACES=311, PETRI_TRANSITIONS=345} [2024-06-27 22:03:37,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 22:03:37,000 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 345 transitions, 5516 flow [2024-06-27 22:03:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:37,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:37,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:37,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:03:37,001 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:37,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1297320746, now seen corresponding path program 2 times [2024-06-27 22:03:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:37,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550391794] [2024-06-27 22:03:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550391794] [2024-06-27 22:03:39,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550391794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:39,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:39,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:03:39,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979882768] [2024-06-27 22:03:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:39,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:03:39,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:03:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:03:39,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:03:39,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 345 transitions, 5516 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:39,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:39,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:03:39,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:40,562 INFO L124 PetriNetUnfolderBase]: 1075/1983 cut-off events. [2024-06-27 22:03:40,562 INFO L125 PetriNetUnfolderBase]: For 147569/147569 co-relation queries the response was YES. [2024-06-27 22:03:40,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17337 conditions, 1983 events. 1075/1983 cut-off events. For 147569/147569 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11592 event pairs, 183 based on Foata normal form. 2/1857 useless extension candidates. Maximal degree in co-relation 17186. Up to 1642 conditions per place. [2024-06-27 22:03:40,583 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 24 changer transitions 0/373 dead transitions. [2024-06-27 22:03:40,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 373 transitions, 6644 flow [2024-06-27 22:03:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:03:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:03:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:03:40,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:03:40,584 INFO L175 Difference]: Start difference. First operand has 311 places, 345 transitions, 5516 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:03:40,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 373 transitions, 6644 flow [2024-06-27 22:03:41,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 373 transitions, 6427 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:41,432 INFO L231 Difference]: Finished difference. Result has 314 places, 347 transitions, 5397 flow [2024-06-27 22:03:41,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5397, PETRI_PLACES=314, PETRI_TRANSITIONS=347} [2024-06-27 22:03:41,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 22:03:41,433 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 347 transitions, 5397 flow [2024-06-27 22:03:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:41,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:41,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:03:41,433 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 724022657, now seen corresponding path program 3 times [2024-06-27 22:03:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:41,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447550835] [2024-06-27 22:03:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447550835] [2024-06-27 22:03:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447550835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853920961] [2024-06-27 22:03:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:43,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:43,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:43,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:43,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 347 transitions, 5397 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:43,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:43,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:44,051 INFO L124 PetriNetUnfolderBase]: 914/1751 cut-off events. [2024-06-27 22:03:44,051 INFO L125 PetriNetUnfolderBase]: For 144437/144451 co-relation queries the response was YES. [2024-06-27 22:03:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15492 conditions, 1751 events. 914/1751 cut-off events. For 144437/144451 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10448 event pairs, 152 based on Foata normal form. 7/1574 useless extension candidates. Maximal degree in co-relation 15340. Up to 1349 conditions per place. [2024-06-27 22:03:44,068 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 251 selfloop transitions, 92 changer transitions 0/358 dead transitions. [2024-06-27 22:03:44,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 358 transitions, 6151 flow [2024-06-27 22:03:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:03:44,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:03:44,069 INFO L175 Difference]: Start difference. First operand has 314 places, 347 transitions, 5397 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:03:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 358 transitions, 6151 flow [2024-06-27 22:03:44,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 358 transitions, 6095 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:03:44,877 INFO L231 Difference]: Finished difference. Result has 317 places, 349 transitions, 5582 flow [2024-06-27 22:03:44,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5582, PETRI_PLACES=317, PETRI_TRANSITIONS=349} [2024-06-27 22:03:44,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 22:03:44,877 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 349 transitions, 5582 flow [2024-06-27 22:03:44,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:44,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:44,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:44,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:03:44,878 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:44,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 724022378, now seen corresponding path program 8 times [2024-06-27 22:03:44,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202528373] [2024-06-27 22:03:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202528373] [2024-06-27 22:03:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202528373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079548777] [2024-06-27 22:03:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:47,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:47,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:47,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:47,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 349 transitions, 5582 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:47,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:47,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:47,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:47,904 INFO L124 PetriNetUnfolderBase]: 923/1784 cut-off events. [2024-06-27 22:03:47,904 INFO L125 PetriNetUnfolderBase]: For 154799/154813 co-relation queries the response was YES. [2024-06-27 22:03:47,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15886 conditions, 1784 events. 923/1784 cut-off events. For 154799/154813 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10605 event pairs, 125 based on Foata normal form. 7/1601 useless extension candidates. Maximal degree in co-relation 15732. Up to 1346 conditions per place. [2024-06-27 22:03:47,921 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 94 changer transitions 0/363 dead transitions. [2024-06-27 22:03:47,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 363 transitions, 6612 flow [2024-06-27 22:03:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:03:47,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:03:47,922 INFO L175 Difference]: Start difference. First operand has 317 places, 349 transitions, 5582 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:03:47,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 363 transitions, 6612 flow [2024-06-27 22:03:48,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 363 transitions, 6391 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:03:48,746 INFO L231 Difference]: Finished difference. Result has 319 places, 353 transitions, 5686 flow [2024-06-27 22:03:48,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5361, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5686, PETRI_PLACES=319, PETRI_TRANSITIONS=353} [2024-06-27 22:03:48,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 22:03:48,747 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 353 transitions, 5686 flow [2024-06-27 22:03:48,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:48,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:48,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:48,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:03:48,747 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:48,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1296934796, now seen corresponding path program 3 times [2024-06-27 22:03:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422372830] [2024-06-27 22:03:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422372830] [2024-06-27 22:03:51,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422372830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:51,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:51,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:51,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524396757] [2024-06-27 22:03:51,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:51,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:51,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:51,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:03:51,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 353 transitions, 5686 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:03:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:53,205 INFO L124 PetriNetUnfolderBase]: 1112/2083 cut-off events. [2024-06-27 22:03:53,206 INFO L125 PetriNetUnfolderBase]: For 163748/163748 co-relation queries the response was YES. [2024-06-27 22:03:53,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17969 conditions, 2083 events. 1112/2083 cut-off events. For 163748/163748 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12386 event pairs, 169 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 17814. Up to 1761 conditions per place. [2024-06-27 22:03:53,228 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 343 selfloop transitions, 25 changer transitions 0/377 dead transitions. [2024-06-27 22:03:53,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 377 transitions, 6572 flow [2024-06-27 22:03:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:03:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:03:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 199 transitions. [2024-06-27 22:03:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41372141372141374 [2024-06-27 22:03:53,229 INFO L175 Difference]: Start difference. First operand has 319 places, 353 transitions, 5686 flow. Second operand 13 states and 199 transitions. [2024-06-27 22:03:53,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 377 transitions, 6572 flow [2024-06-27 22:03:53,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 377 transitions, 6390 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 22:03:53,999 INFO L231 Difference]: Finished difference. Result has 326 places, 354 transitions, 5574 flow [2024-06-27 22:03:53,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5574, PETRI_PLACES=326, PETRI_TRANSITIONS=354} [2024-06-27 22:03:53,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 22:03:54,000 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 354 transitions, 5574 flow [2024-06-27 22:03:54,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:54,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:54,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:54,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:03:54,000 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:54,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1547255790, now seen corresponding path program 4 times [2024-06-27 22:03:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362804453] [2024-06-27 22:03:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:54,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:03:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:03:56,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:03:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362804453] [2024-06-27 22:03:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362804453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:03:56,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:03:56,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:03:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211767518] [2024-06-27 22:03:56,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:03:56,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:03:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:03:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:03:56,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:03:56,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:03:56,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 354 transitions, 5574 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:56,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:03:56,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:03:56,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:03:57,178 INFO L124 PetriNetUnfolderBase]: 951/1841 cut-off events. [2024-06-27 22:03:57,178 INFO L125 PetriNetUnfolderBase]: For 163559/163574 co-relation queries the response was YES. [2024-06-27 22:03:57,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16289 conditions, 1841 events. 951/1841 cut-off events. For 163559/163574 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11157 event pairs, 150 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 16132. Up to 1519 conditions per place. [2024-06-27 22:03:57,196 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 326 selfloop transitions, 27 changer transitions 0/368 dead transitions. [2024-06-27 22:03:57,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 368 transitions, 6372 flow [2024-06-27 22:03:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:03:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:03:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:03:57,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:03:57,197 INFO L175 Difference]: Start difference. First operand has 326 places, 354 transitions, 5574 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:03:57,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 368 transitions, 6372 flow [2024-06-27 22:03:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 368 transitions, 6318 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 22:03:58,126 INFO L231 Difference]: Finished difference. Result has 325 places, 355 transitions, 5604 flow [2024-06-27 22:03:58,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5520, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5604, PETRI_PLACES=325, PETRI_TRANSITIONS=355} [2024-06-27 22:03:58,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-27 22:03:58,127 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 355 transitions, 5604 flow [2024-06-27 22:03:58,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:03:58,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:03:58,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:03:58,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:03:58,127 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:03:58,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:03:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1285892906, now seen corresponding path program 5 times [2024-06-27 22:03:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:03:58,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677749158] [2024-06-27 22:03:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:03:58,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:03:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:02,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:02,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677749158] [2024-06-27 22:04:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677749158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:02,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:02,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:04:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919014690] [2024-06-27 22:04:02,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:02,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:04:02,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:04:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:04:02,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:04:02,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 355 transitions, 5604 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:02,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:02,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:04:02,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:03,826 INFO L124 PetriNetUnfolderBase]: 1126/2099 cut-off events. [2024-06-27 22:04:03,826 INFO L125 PetriNetUnfolderBase]: For 158838/158838 co-relation queries the response was YES. [2024-06-27 22:04:03,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17974 conditions, 2099 events. 1126/2099 cut-off events. For 158838/158838 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12551 event pairs, 200 based on Foata normal form. 2/1959 useless extension candidates. Maximal degree in co-relation 17816. Up to 1798 conditions per place. [2024-06-27 22:04:03,848 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 346 selfloop transitions, 19 changer transitions 0/374 dead transitions. [2024-06-27 22:04:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 374 transitions, 6450 flow [2024-06-27 22:04:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:04:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:04:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 22:04:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 22:04:03,849 INFO L175 Difference]: Start difference. First operand has 325 places, 355 transitions, 5604 flow. Second operand 11 states and 169 transitions. [2024-06-27 22:04:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 374 transitions, 6450 flow [2024-06-27 22:04:04,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 374 transitions, 6374 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:04:04,765 INFO L231 Difference]: Finished difference. Result has 328 places, 355 transitions, 5570 flow [2024-06-27 22:04:04,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5528, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5570, PETRI_PLACES=328, PETRI_TRANSITIONS=355} [2024-06-27 22:04:04,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-27 22:04:04,766 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 355 transitions, 5570 flow [2024-06-27 22:04:04,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:04,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:04,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:04,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:04:04,766 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:04,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1285882986, now seen corresponding path program 9 times [2024-06-27 22:04:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:04,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207473189] [2024-06-27 22:04:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:04,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207473189] [2024-06-27 22:04:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207473189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222053979] [2024-06-27 22:04:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:06,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:04:06,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 355 transitions, 5570 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:06,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:06,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:04:06,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:07,856 INFO L124 PetriNetUnfolderBase]: 1151/2140 cut-off events. [2024-06-27 22:04:07,856 INFO L125 PetriNetUnfolderBase]: For 165692/165692 co-relation queries the response was YES. [2024-06-27 22:04:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18400 conditions, 2140 events. 1151/2140 cut-off events. For 165692/165692 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12849 event pairs, 201 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 18241. Up to 1811 conditions per place. [2024-06-27 22:04:07,879 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 337 selfloop transitions, 34 changer transitions 0/380 dead transitions. [2024-06-27 22:04:07,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 380 transitions, 6762 flow [2024-06-27 22:04:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:04:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:04:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:04:07,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:04:07,879 INFO L175 Difference]: Start difference. First operand has 328 places, 355 transitions, 5570 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:04:07,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 380 transitions, 6762 flow [2024-06-27 22:04:08,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 380 transitions, 6718 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:04:08,804 INFO L231 Difference]: Finished difference. Result has 330 places, 364 transitions, 5818 flow [2024-06-27 22:04:08,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5818, PETRI_PLACES=330, PETRI_TRANSITIONS=364} [2024-06-27 22:04:08,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-27 22:04:08,805 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 364 transitions, 5818 flow [2024-06-27 22:04:08,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:08,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:08,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:08,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:04:08,805 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:08,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 971924286, now seen corresponding path program 10 times [2024-06-27 22:04:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:08,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82817384] [2024-06-27 22:04:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82817384] [2024-06-27 22:04:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82817384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011082217] [2024-06-27 22:04:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:10,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:10,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 364 transitions, 5818 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:10,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:10,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:10,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:11,486 INFO L124 PetriNetUnfolderBase]: 1019/1944 cut-off events. [2024-06-27 22:04:11,486 INFO L125 PetriNetUnfolderBase]: For 194454/194468 co-relation queries the response was YES. [2024-06-27 22:04:11,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18179 conditions, 1944 events. 1019/1944 cut-off events. For 194454/194468 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11781 event pairs, 160 based on Foata normal form. 9/1739 useless extension candidates. Maximal degree in co-relation 18018. Up to 1080 conditions per place. [2024-06-27 22:04:11,507 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 196 selfloop transitions, 177 changer transitions 0/388 dead transitions. [2024-06-27 22:04:11,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 388 transitions, 7550 flow [2024-06-27 22:04:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:04:11,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:04:11,508 INFO L175 Difference]: Start difference. First operand has 330 places, 364 transitions, 5818 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:04:11,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 388 transitions, 7550 flow [2024-06-27 22:04:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 388 transitions, 7417 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 22:04:12,477 INFO L231 Difference]: Finished difference. Result has 334 places, 372 transitions, 6313 flow [2024-06-27 22:04:12,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5685, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6313, PETRI_PLACES=334, PETRI_TRANSITIONS=372} [2024-06-27 22:04:12,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 22:04:12,478 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 372 transitions, 6313 flow [2024-06-27 22:04:12,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:12,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:12,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:12,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:04:12,478 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 971916846, now seen corresponding path program 11 times [2024-06-27 22:04:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566848729] [2024-06-27 22:04:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:14,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:14,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566848729] [2024-06-27 22:04:14,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566848729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:14,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:14,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263109386] [2024-06-27 22:04:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:14,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:14,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:14,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 372 transitions, 6313 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:14,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:14,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:15,732 INFO L124 PetriNetUnfolderBase]: 1031/1963 cut-off events. [2024-06-27 22:04:15,732 INFO L125 PetriNetUnfolderBase]: For 196948/196962 co-relation queries the response was YES. [2024-06-27 22:04:15,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18890 conditions, 1963 events. 1031/1963 cut-off events. For 196948/196962 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11886 event pairs, 156 based on Foata normal form. 8/1752 useless extension candidates. Maximal degree in co-relation 18726. Up to 1095 conditions per place. [2024-06-27 22:04:15,752 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 190 selfloop transitions, 186 changer transitions 0/391 dead transitions. [2024-06-27 22:04:15,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 391 transitions, 7922 flow [2024-06-27 22:04:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:04:15,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:04:15,753 INFO L175 Difference]: Start difference. First operand has 334 places, 372 transitions, 6313 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:04:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 391 transitions, 7922 flow [2024-06-27 22:04:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 391 transitions, 7441 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:16,801 INFO L231 Difference]: Finished difference. Result has 338 places, 378 transitions, 6451 flow [2024-06-27 22:04:16,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5864, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6451, PETRI_PLACES=338, PETRI_TRANSITIONS=378} [2024-06-27 22:04:16,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:04:16,801 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 378 transitions, 6451 flow [2024-06-27 22:04:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:16,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:16,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:04:16,802 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:16,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash 972183756, now seen corresponding path program 12 times [2024-06-27 22:04:16,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:16,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440563193] [2024-06-27 22:04:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:18,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440563193] [2024-06-27 22:04:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440563193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:18,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:18,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:18,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902320406] [2024-06-27 22:04:18,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:18,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:18,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:18,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:18,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 378 transitions, 6451 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:18,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:18,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:18,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:19,533 INFO L124 PetriNetUnfolderBase]: 1028/1960 cut-off events. [2024-06-27 22:04:19,533 INFO L125 PetriNetUnfolderBase]: For 189576/189590 co-relation queries the response was YES. [2024-06-27 22:04:19,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18364 conditions, 1960 events. 1028/1960 cut-off events. For 189576/189590 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11904 event pairs, 156 based on Foata normal form. 9/1750 useless extension candidates. Maximal degree in co-relation 18200. Up to 1094 conditions per place. [2024-06-27 22:04:19,555 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 200 selfloop transitions, 177 changer transitions 0/392 dead transitions. [2024-06-27 22:04:19,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 392 transitions, 8059 flow [2024-06-27 22:04:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:04:19,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:04:19,558 INFO L175 Difference]: Start difference. First operand has 338 places, 378 transitions, 6451 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:04:19,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 392 transitions, 8059 flow [2024-06-27 22:04:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 392 transitions, 7696 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:20,675 INFO L231 Difference]: Finished difference. Result has 344 places, 378 transitions, 6449 flow [2024-06-27 22:04:20,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6449, PETRI_PLACES=344, PETRI_TRANSITIONS=378} [2024-06-27 22:04:20,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 22:04:20,675 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 378 transitions, 6449 flow [2024-06-27 22:04:20,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:20,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:20,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:20,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:04:20,676 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:20,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 972184035, now seen corresponding path program 4 times [2024-06-27 22:04:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158670280] [2024-06-27 22:04:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:20,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:22,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:22,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158670280] [2024-06-27 22:04:22,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158670280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:22,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:22,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:22,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878536458] [2024-06-27 22:04:22,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:22,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:22,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:22,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:22,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 378 transitions, 6449 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:22,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:22,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:22,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:23,438 INFO L124 PetriNetUnfolderBase]: 1037/1973 cut-off events. [2024-06-27 22:04:23,438 INFO L125 PetriNetUnfolderBase]: For 193092/193106 co-relation queries the response was YES. [2024-06-27 22:04:23,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18789 conditions, 1973 events. 1037/1973 cut-off events. For 193092/193106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11977 event pairs, 158 based on Foata normal form. 8/1760 useless extension candidates. Maximal degree in co-relation 18622. Up to 1296 conditions per place. [2024-06-27 22:04:23,460 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 161 changer transitions 0/397 dead transitions. [2024-06-27 22:04:23,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 397 transitions, 8029 flow [2024-06-27 22:04:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:04:23,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:04:23,461 INFO L175 Difference]: Start difference. First operand has 344 places, 378 transitions, 6449 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:04:23,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 397 transitions, 8029 flow [2024-06-27 22:04:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 397 transitions, 7605 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:04:24,507 INFO L231 Difference]: Finished difference. Result has 347 places, 385 transitions, 6659 flow [2024-06-27 22:04:24,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6659, PETRI_PLACES=347, PETRI_TRANSITIONS=385} [2024-06-27 22:04:24,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 22:04:24,508 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 385 transitions, 6659 flow [2024-06-27 22:04:24,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:24,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:24,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:04:24,508 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:24,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 972193676, now seen corresponding path program 6 times [2024-06-27 22:04:24,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:24,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025963799] [2024-06-27 22:04:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:24,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025963799] [2024-06-27 22:04:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025963799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:27,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:27,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075736318] [2024-06-27 22:04:27,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:27,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:27,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:27,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:27,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:27,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:27,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 385 transitions, 6659 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:27,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:27,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:27,957 INFO L124 PetriNetUnfolderBase]: 1033/1971 cut-off events. [2024-06-27 22:04:27,958 INFO L125 PetriNetUnfolderBase]: For 190344/190359 co-relation queries the response was YES. [2024-06-27 22:04:27,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18578 conditions, 1971 events. 1033/1971 cut-off events. For 190344/190359 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11973 event pairs, 149 based on Foata normal form. 3/1756 useless extension candidates. Maximal degree in co-relation 18408. Up to 1583 conditions per place. [2024-06-27 22:04:27,982 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 336 selfloop transitions, 47 changer transitions 0/398 dead transitions. [2024-06-27 22:04:27,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 398 transitions, 7493 flow [2024-06-27 22:04:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:04:27,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:04:27,983 INFO L175 Difference]: Start difference. First operand has 347 places, 385 transitions, 6659 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:04:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 398 transitions, 7493 flow [2024-06-27 22:04:29,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 398 transitions, 7357 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:29,088 INFO L231 Difference]: Finished difference. Result has 352 places, 385 transitions, 6621 flow [2024-06-27 22:04:29,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6523, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6621, PETRI_PLACES=352, PETRI_TRANSITIONS=385} [2024-06-27 22:04:29,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 22:04:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 385 transitions, 6621 flow [2024-06-27 22:04:29,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:29,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:29,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:04:29,089 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash 971924565, now seen corresponding path program 5 times [2024-06-27 22:04:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413627636] [2024-06-27 22:04:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:31,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413627636] [2024-06-27 22:04:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413627636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:31,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894093231] [2024-06-27 22:04:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:31,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:31,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:31,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:31,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 385 transitions, 6621 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:31,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:31,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:31,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:31,771 INFO L124 PetriNetUnfolderBase]: 1032/1981 cut-off events. [2024-06-27 22:04:31,771 INFO L125 PetriNetUnfolderBase]: For 184859/184873 co-relation queries the response was YES. [2024-06-27 22:04:31,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18514 conditions, 1981 events. 1032/1981 cut-off events. For 184859/184873 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11980 event pairs, 128 based on Foata normal form. 8/1763 useless extension candidates. Maximal degree in co-relation 18343. Up to 1285 conditions per place. [2024-06-27 22:04:31,795 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 217 selfloop transitions, 164 changer transitions 0/396 dead transitions. [2024-06-27 22:04:31,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 396 transitions, 7815 flow [2024-06-27 22:04:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:04:31,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:04:31,796 INFO L175 Difference]: Start difference. First operand has 352 places, 385 transitions, 6621 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:04:31,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 396 transitions, 7815 flow [2024-06-27 22:04:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 396 transitions, 7510 flow, removed 23 selfloop flow, removed 14 redundant places. [2024-06-27 22:04:32,896 INFO L231 Difference]: Finished difference. Result has 348 places, 385 transitions, 6649 flow [2024-06-27 22:04:32,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6316, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6649, PETRI_PLACES=348, PETRI_TRANSITIONS=385} [2024-06-27 22:04:32,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-27 22:04:32,897 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 385 transitions, 6649 flow [2024-06-27 22:04:32,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:32,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:32,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:04:32,897 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 972193335, now seen corresponding path program 6 times [2024-06-27 22:04:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449943181] [2024-06-27 22:04:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:35,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:35,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449943181] [2024-06-27 22:04:35,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449943181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:35,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:35,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:35,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646040647] [2024-06-27 22:04:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:35,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:35,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:35,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 385 transitions, 6649 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:35,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:35,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:35,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:35,751 INFO L124 PetriNetUnfolderBase]: 1032/1964 cut-off events. [2024-06-27 22:04:35,752 INFO L125 PetriNetUnfolderBase]: For 179804/179818 co-relation queries the response was YES. [2024-06-27 22:04:35,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18254 conditions, 1964 events. 1032/1964 cut-off events. For 179804/179818 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11908 event pairs, 155 based on Foata normal form. 9/1750 useless extension candidates. Maximal degree in co-relation 18086. Up to 1420 conditions per place. [2024-06-27 22:04:35,775 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 123 changer transitions 0/394 dead transitions. [2024-06-27 22:04:35,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 394 transitions, 7427 flow [2024-06-27 22:04:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:04:35,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:04:35,776 INFO L175 Difference]: Start difference. First operand has 348 places, 385 transitions, 6649 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:04:35,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 394 transitions, 7427 flow [2024-06-27 22:04:36,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 394 transitions, 7039 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 22:04:36,880 INFO L231 Difference]: Finished difference. Result has 347 places, 385 transitions, 6512 flow [2024-06-27 22:04:36,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6261, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6512, PETRI_PLACES=347, PETRI_TRANSITIONS=385} [2024-06-27 22:04:36,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 22:04:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 385 transitions, 6512 flow [2024-06-27 22:04:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:36,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:36,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:04:36,881 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:36,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 724031957, now seen corresponding path program 7 times [2024-06-27 22:04:36,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:36,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134044995] [2024-06-27 22:04:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:38,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134044995] [2024-06-27 22:04:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134044995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:38,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:04:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663400288] [2024-06-27 22:04:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:04:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:04:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:04:39,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:39,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 385 transitions, 6512 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:39,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:39,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:39,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:39,983 INFO L124 PetriNetUnfolderBase]: 1032/1966 cut-off events. [2024-06-27 22:04:39,984 INFO L125 PetriNetUnfolderBase]: For 181876/181890 co-relation queries the response was YES. [2024-06-27 22:04:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18090 conditions, 1966 events. 1032/1966 cut-off events. For 181876/181890 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 11932 event pairs, 156 based on Foata normal form. 7/1751 useless extension candidates. Maximal degree in co-relation 17923. Up to 1546 conditions per place. [2024-06-27 22:04:40,007 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 300 selfloop transitions, 83 changer transitions 0/398 dead transitions. [2024-06-27 22:04:40,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 398 transitions, 7595 flow [2024-06-27 22:04:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:04:40,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:04:40,008 INFO L175 Difference]: Start difference. First operand has 347 places, 385 transitions, 6512 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:04:40,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 398 transitions, 7595 flow [2024-06-27 22:04:41,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 398 transitions, 7344 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:04:41,214 INFO L231 Difference]: Finished difference. Result has 349 places, 388 transitions, 6521 flow [2024-06-27 22:04:41,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6261, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6521, PETRI_PLACES=349, PETRI_TRANSITIONS=388} [2024-06-27 22:04:41,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 22:04:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 388 transitions, 6521 flow [2024-06-27 22:04:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:41,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:41,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:04:41,215 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash 723762908, now seen corresponding path program 13 times [2024-06-27 22:04:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414887428] [2024-06-27 22:04:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:43,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414887428] [2024-06-27 22:04:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414887428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:43,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:43,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:04:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153370289] [2024-06-27 22:04:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:04:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:04:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:04:43,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:43,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 388 transitions, 6521 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:43,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:43,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:43,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:44,410 INFO L124 PetriNetUnfolderBase]: 1046/1989 cut-off events. [2024-06-27 22:04:44,410 INFO L125 PetriNetUnfolderBase]: For 190549/190563 co-relation queries the response was YES. [2024-06-27 22:04:44,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18309 conditions, 1989 events. 1046/1989 cut-off events. For 190549/190563 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12069 event pairs, 154 based on Foata normal form. 7/1770 useless extension candidates. Maximal degree in co-relation 18140. Up to 1530 conditions per place. [2024-06-27 22:04:44,433 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 293 selfloop transitions, 95 changer transitions 0/403 dead transitions. [2024-06-27 22:04:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 403 transitions, 7839 flow [2024-06-27 22:04:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:04:44,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:04:44,434 INFO L175 Difference]: Start difference. First operand has 349 places, 388 transitions, 6521 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:04:44,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 403 transitions, 7839 flow [2024-06-27 22:04:45,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 403 transitions, 7689 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:04:45,683 INFO L231 Difference]: Finished difference. Result has 354 places, 392 transitions, 6664 flow [2024-06-27 22:04:45,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6371, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6664, PETRI_PLACES=354, PETRI_TRANSITIONS=392} [2024-06-27 22:04:45,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 22:04:45,684 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 392 transitions, 6664 flow [2024-06-27 22:04:45,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:45,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:45,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:04:45,684 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:45,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 723763187, now seen corresponding path program 8 times [2024-06-27 22:04:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298417887] [2024-06-27 22:04:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298417887] [2024-06-27 22:04:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298417887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:04:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76822120] [2024-06-27 22:04:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:04:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:04:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:04:47,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:47,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 392 transitions, 6664 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:47,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:47,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:47,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:48,461 INFO L124 PetriNetUnfolderBase]: 1047/2006 cut-off events. [2024-06-27 22:04:48,461 INFO L125 PetriNetUnfolderBase]: For 197171/197185 co-relation queries the response was YES. [2024-06-27 22:04:48,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18489 conditions, 2006 events. 1047/2006 cut-off events. For 197171/197185 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12140 event pairs, 127 based on Foata normal form. 7/1783 useless extension candidates. Maximal degree in co-relation 18318. Up to 1549 conditions per place. [2024-06-27 22:04:48,485 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 298 selfloop transitions, 90 changer transitions 0/403 dead transitions. [2024-06-27 22:04:48,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 403 transitions, 7505 flow [2024-06-27 22:04:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:04:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:04:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:04:48,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:04:48,486 INFO L175 Difference]: Start difference. First operand has 354 places, 392 transitions, 6664 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:04:48,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 403 transitions, 7505 flow [2024-06-27 22:04:49,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 403 transitions, 7301 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:04:49,807 INFO L231 Difference]: Finished difference. Result has 358 places, 394 transitions, 6694 flow [2024-06-27 22:04:49,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6460, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6694, PETRI_PLACES=358, PETRI_TRANSITIONS=394} [2024-06-27 22:04:49,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 22:04:49,808 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 394 transitions, 6694 flow [2024-06-27 22:04:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:04:49,808 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 723755468, now seen corresponding path program 14 times [2024-06-27 22:04:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735678038] [2024-06-27 22:04:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735678038] [2024-06-27 22:04:51,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735678038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:51,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:51,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:04:51,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447086275] [2024-06-27 22:04:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:51,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:04:51,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:04:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:04:52,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:52,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 394 transitions, 6694 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:52,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:52,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:52,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:52,988 INFO L124 PetriNetUnfolderBase]: 1058/2004 cut-off events. [2024-06-27 22:04:52,988 INFO L125 PetriNetUnfolderBase]: For 204127/204141 co-relation queries the response was YES. [2024-06-27 22:04:53,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18846 conditions, 2004 events. 1058/2004 cut-off events. For 204127/204141 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12153 event pairs, 157 based on Foata normal form. 7/1782 useless extension candidates. Maximal degree in co-relation 18674. Up to 1506 conditions per place. [2024-06-27 22:04:53,012 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 289 selfloop transitions, 106 changer transitions 0/410 dead transitions. [2024-06-27 22:04:53,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 410 transitions, 8288 flow [2024-06-27 22:04:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:04:53,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 22:04:53,013 INFO L175 Difference]: Start difference. First operand has 358 places, 394 transitions, 6694 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:04:53,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 410 transitions, 8288 flow [2024-06-27 22:04:54,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 410 transitions, 8055 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:04:54,361 INFO L231 Difference]: Finished difference. Result has 359 places, 398 transitions, 6814 flow [2024-06-27 22:04:54,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6461, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6814, PETRI_PLACES=359, PETRI_TRANSITIONS=398} [2024-06-27 22:04:54,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 22:04:54,362 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 398 transitions, 6814 flow [2024-06-27 22:04:54,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:54,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:54,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:54,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:04:54,362 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:54,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash 716605628, now seen corresponding path program 15 times [2024-06-27 22:04:54,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:54,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997339230] [2024-06-27 22:04:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:56,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:56,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997339230] [2024-06-27 22:04:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997339230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:56,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:56,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:04:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148216914] [2024-06-27 22:04:56,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:56,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:04:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:04:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:04:56,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:04:56,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 398 transitions, 6814 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:56,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:56,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:04:56,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:57,715 INFO L124 PetriNetUnfolderBase]: 1062/2012 cut-off events. [2024-06-27 22:04:57,715 INFO L125 PetriNetUnfolderBase]: For 207949/207963 co-relation queries the response was YES. [2024-06-27 22:04:57,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18954 conditions, 2012 events. 1062/2012 cut-off events. For 207949/207963 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12230 event pairs, 156 based on Foata normal form. 7/1789 useless extension candidates. Maximal degree in co-relation 18782. Up to 1582 conditions per place. [2024-06-27 22:04:57,739 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 310 selfloop transitions, 85 changer transitions 0/410 dead transitions. [2024-06-27 22:04:57,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 410 transitions, 7895 flow [2024-06-27 22:04:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:04:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:04:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:04:57,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:04:57,740 INFO L175 Difference]: Start difference. First operand has 359 places, 398 transitions, 6814 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:04:57,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 410 transitions, 7895 flow [2024-06-27 22:04:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 410 transitions, 7296 flow, removed 56 selfloop flow, removed 10 redundant places. [2024-06-27 22:04:59,072 INFO L231 Difference]: Finished difference. Result has 358 places, 400 transitions, 6443 flow [2024-06-27 22:04:59,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6217, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6443, PETRI_PLACES=358, PETRI_TRANSITIONS=400} [2024-06-27 22:04:59,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 22:04:59,073 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 400 transitions, 6443 flow [2024-06-27 22:04:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:59,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:59,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:59,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:04:59,073 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:04:59,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash 716613068, now seen corresponding path program 16 times [2024-06-27 22:04:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:59,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842754701] [2024-06-27 22:04:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:01,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842754701] [2024-06-27 22:05:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842754701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:05:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846752160] [2024-06-27 22:05:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:01,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:05:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:05:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:05:01,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:05:01,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 400 transitions, 6443 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:01,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:01,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:05:01,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:02,060 INFO L124 PetriNetUnfolderBase]: 1066/2021 cut-off events. [2024-06-27 22:05:02,060 INFO L125 PetriNetUnfolderBase]: For 206631/206645 co-relation queries the response was YES. [2024-06-27 22:05:02,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17994 conditions, 2021 events. 1066/2021 cut-off events. For 206631/206645 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12263 event pairs, 156 based on Foata normal form. 8/1797 useless extension candidates. Maximal degree in co-relation 17825. Up to 1571 conditions per place. [2024-06-27 22:05:02,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 306 selfloop transitions, 91 changer transitions 0/412 dead transitions. [2024-06-27 22:05:02,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 412 transitions, 7521 flow [2024-06-27 22:05:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:05:02,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:05:02,084 INFO L175 Difference]: Start difference. First operand has 358 places, 400 transitions, 6443 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:05:02,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 412 transitions, 7521 flow [2024-06-27 22:05:03,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 412 transitions, 7273 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:03,467 INFO L231 Difference]: Finished difference. Result has 360 places, 402 transitions, 6429 flow [2024-06-27 22:05:03,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6195, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6429, PETRI_PLACES=360, PETRI_TRANSITIONS=402} [2024-06-27 22:05:03,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 22:05:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 402 transitions, 6429 flow [2024-06-27 22:05:03,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:03,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:03,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:03,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:05:03,468 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:03,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 716613347, now seen corresponding path program 9 times [2024-06-27 22:05:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3911578] [2024-06-27 22:05:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3911578] [2024-06-27 22:05:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3911578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:05,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:05:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787446292] [2024-06-27 22:05:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:05:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:05:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:05:05,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:05:05,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 402 transitions, 6429 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:05,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:05,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:05:05,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:06,286 INFO L124 PetriNetUnfolderBase]: 1064/2034 cut-off events. [2024-06-27 22:05:06,286 INFO L125 PetriNetUnfolderBase]: For 202122/202136 co-relation queries the response was YES. [2024-06-27 22:05:06,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 2034 events. 1064/2034 cut-off events. For 202122/202136 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12357 event pairs, 127 based on Foata normal form. 7/1804 useless extension candidates. Maximal degree in co-relation 17655. Up to 1616 conditions per place. [2024-06-27 22:05:06,311 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 70 changer transitions 0/411 dead transitions. [2024-06-27 22:05:06,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 411 transitions, 7241 flow [2024-06-27 22:05:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:05:06,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:05:06,312 INFO L175 Difference]: Start difference. First operand has 360 places, 402 transitions, 6429 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:05:06,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 411 transitions, 7241 flow [2024-06-27 22:05:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 411 transitions, 6971 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:07,660 INFO L231 Difference]: Finished difference. Result has 362 places, 402 transitions, 6304 flow [2024-06-27 22:05:07,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6159, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6304, PETRI_PLACES=362, PETRI_TRANSITIONS=402} [2024-06-27 22:05:07,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-27 22:05:07,660 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 402 transitions, 6304 flow [2024-06-27 22:05:07,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:07,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:07,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:05:07,661 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:07,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2007209440, now seen corresponding path program 6 times [2024-06-27 22:05:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572515130] [2024-06-27 22:05:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572515130] [2024-06-27 22:05:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572515130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:08,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:08,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16094912] [2024-06-27 22:05:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:08,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:08,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 402 transitions, 6304 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:08,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:08,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:09,535 INFO L124 PetriNetUnfolderBase]: 1309/2429 cut-off events. [2024-06-27 22:05:09,535 INFO L125 PetriNetUnfolderBase]: For 213733/213733 co-relation queries the response was YES. [2024-06-27 22:05:09,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 2429 events. 1309/2429 cut-off events. For 213733/213733 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14919 event pairs, 122 based on Foata normal form. 2/2246 useless extension candidates. Maximal degree in co-relation 20176. Up to 2004 conditions per place. [2024-06-27 22:05:09,563 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 380 selfloop transitions, 52 changer transitions 0/441 dead transitions. [2024-06-27 22:05:09,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 441 transitions, 7434 flow [2024-06-27 22:05:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:05:09,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:05:09,564 INFO L175 Difference]: Start difference. First operand has 362 places, 402 transitions, 6304 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:05:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 441 transitions, 7434 flow [2024-06-27 22:05:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 441 transitions, 7270 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:05:10,880 INFO L231 Difference]: Finished difference. Result has 365 places, 412 transitions, 6423 flow [2024-06-27 22:05:10,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6423, PETRI_PLACES=365, PETRI_TRANSITIONS=412} [2024-06-27 22:05:10,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 22:05:10,881 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 412 transitions, 6423 flow [2024-06-27 22:05:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:10,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:10,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:05:10,881 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:10,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:10,881 INFO L85 PathProgramCache]: Analyzing trace with hash -253436942, now seen corresponding path program 7 times [2024-06-27 22:05:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:10,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939933563] [2024-06-27 22:05:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:11,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939933563] [2024-06-27 22:05:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939933563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:11,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535382123] [2024-06-27 22:05:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:11,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:11,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:11,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 412 transitions, 6423 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:11,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:11,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:11,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:12,801 INFO L124 PetriNetUnfolderBase]: 1350/2506 cut-off events. [2024-06-27 22:05:12,802 INFO L125 PetriNetUnfolderBase]: For 219960/219960 co-relation queries the response was YES. [2024-06-27 22:05:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 2506 events. 1350/2506 cut-off events. For 219960/219960 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 15514 event pairs, 141 based on Foata normal form. 2/2320 useless extension candidates. Maximal degree in co-relation 21132. Up to 2091 conditions per place. [2024-06-27 22:05:12,832 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 379 selfloop transitions, 67 changer transitions 0/455 dead transitions. [2024-06-27 22:05:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 455 transitions, 7832 flow [2024-06-27 22:05:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:05:12,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:05:12,833 INFO L175 Difference]: Start difference. First operand has 365 places, 412 transitions, 6423 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:05:12,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 455 transitions, 7832 flow [2024-06-27 22:05:14,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 455 transitions, 7601 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-27 22:05:14,366 INFO L231 Difference]: Finished difference. Result has 368 places, 429 transitions, 6812 flow [2024-06-27 22:05:14,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6210, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6812, PETRI_PLACES=368, PETRI_TRANSITIONS=429} [2024-06-27 22:05:14,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 22:05:14,367 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 429 transitions, 6812 flow [2024-06-27 22:05:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:14,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:14,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:05:14,367 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:14,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 980568852, now seen corresponding path program 8 times [2024-06-27 22:05:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:14,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478890961] [2024-06-27 22:05:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478890961] [2024-06-27 22:05:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478890961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:15,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763527182] [2024-06-27 22:05:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:15,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:15,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:05:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 429 transitions, 6812 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:05:15,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:15,978 INFO L124 PetriNetUnfolderBase]: 1370/2581 cut-off events. [2024-06-27 22:05:15,978 INFO L125 PetriNetUnfolderBase]: For 236363/236370 co-relation queries the response was YES. [2024-06-27 22:05:16,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21418 conditions, 2581 events. 1370/2581 cut-off events. For 236363/236370 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 16596 event pairs, 82 based on Foata normal form. 5/2400 useless extension candidates. Maximal degree in co-relation 21243. Up to 1456 conditions per place. [2024-06-27 22:05:16,011 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 251 selfloop transitions, 76 changer transitions 0/474 dead transitions. [2024-06-27 22:05:16,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 474 transitions, 7856 flow [2024-06-27 22:05:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 22:05:16,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 22:05:16,012 INFO L175 Difference]: Start difference. First operand has 368 places, 429 transitions, 6812 flow. Second operand 10 states and 188 transitions. [2024-06-27 22:05:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 474 transitions, 7856 flow [2024-06-27 22:05:17,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 474 transitions, 7715 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:17,466 INFO L231 Difference]: Finished difference. Result has 374 places, 446 transitions, 7158 flow [2024-06-27 22:05:17,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6671, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7158, PETRI_PLACES=374, PETRI_TRANSITIONS=446} [2024-06-27 22:05:17,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 22:05:17,467 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 446 transitions, 7158 flow [2024-06-27 22:05:17,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:17,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:17,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:17,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:05:17,467 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:17,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1021263116, now seen corresponding path program 9 times [2024-06-27 22:05:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:17,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650072043] [2024-06-27 22:05:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650072043] [2024-06-27 22:05:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650072043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:18,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:18,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262718839] [2024-06-27 22:05:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:18,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:18,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 446 transitions, 7158 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:18,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:18,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:18,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:19,654 INFO L124 PetriNetUnfolderBase]: 1455/2699 cut-off events. [2024-06-27 22:05:19,654 INFO L125 PetriNetUnfolderBase]: For 232197/232197 co-relation queries the response was YES. [2024-06-27 22:05:19,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23168 conditions, 2699 events. 1455/2699 cut-off events. For 232197/232197 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 17129 event pairs, 158 based on Foata normal form. 2/2504 useless extension candidates. Maximal degree in co-relation 22990. Up to 2277 conditions per place. [2024-06-27 22:05:19,688 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 405 selfloop transitions, 58 changer transitions 0/472 dead transitions. [2024-06-27 22:05:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 472 transitions, 8288 flow [2024-06-27 22:05:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:05:19,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:05:19,689 INFO L175 Difference]: Start difference. First operand has 374 places, 446 transitions, 7158 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:05:19,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 472 transitions, 8288 flow [2024-06-27 22:05:21,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 472 transitions, 8133 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:21,321 INFO L231 Difference]: Finished difference. Result has 378 places, 452 transitions, 7261 flow [2024-06-27 22:05:21,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7013, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7261, PETRI_PLACES=378, PETRI_TRANSITIONS=452} [2024-06-27 22:05:21,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 22:05:21,321 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 452 transitions, 7261 flow [2024-06-27 22:05:21,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:21,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:21,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:05:21,322 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:21,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1953747558, now seen corresponding path program 10 times [2024-06-27 22:05:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326617379] [2024-06-27 22:05:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326617379] [2024-06-27 22:05:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326617379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038332333] [2024-06-27 22:05:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:23,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:23,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 452 transitions, 7261 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:23,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:23,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:23,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:24,095 INFO L124 PetriNetUnfolderBase]: 1493/2777 cut-off events. [2024-06-27 22:05:24,095 INFO L125 PetriNetUnfolderBase]: For 238772/238772 co-relation queries the response was YES. [2024-06-27 22:05:24,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23697 conditions, 2777 events. 1493/2777 cut-off events. For 238772/238772 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 17856 event pairs, 185 based on Foata normal form. 2/2579 useless extension candidates. Maximal degree in co-relation 23518. Up to 2340 conditions per place. [2024-06-27 22:05:24,129 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 413 selfloop transitions, 64 changer transitions 0/486 dead transitions. [2024-06-27 22:05:24,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 486 transitions, 8642 flow [2024-06-27 22:05:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:05:24,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:05:24,130 INFO L175 Difference]: Start difference. First operand has 378 places, 452 transitions, 7261 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:05:24,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 486 transitions, 8642 flow [2024-06-27 22:05:25,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 486 transitions, 8402 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:25,830 INFO L231 Difference]: Finished difference. Result has 381 places, 464 transitions, 7524 flow [2024-06-27 22:05:25,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7524, PETRI_PLACES=381, PETRI_TRANSITIONS=464} [2024-06-27 22:05:25,830 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 22:05:25,830 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 464 transitions, 7524 flow [2024-06-27 22:05:25,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:25,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:25,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:25,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:05:25,830 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:25,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1626047732, now seen corresponding path program 11 times [2024-06-27 22:05:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:25,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067043394] [2024-06-27 22:05:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:25,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:27,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:27,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067043394] [2024-06-27 22:05:27,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067043394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:27,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:27,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999797600] [2024-06-27 22:05:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:27,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:27,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 464 transitions, 7524 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:27,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:27,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:27,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:28,164 INFO L124 PetriNetUnfolderBase]: 1513/2814 cut-off events. [2024-06-27 22:05:28,165 INFO L125 PetriNetUnfolderBase]: For 243057/243057 co-relation queries the response was YES. [2024-06-27 22:05:28,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23930 conditions, 2814 events. 1513/2814 cut-off events. For 243057/243057 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 18149 event pairs, 183 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 23749. Up to 2367 conditions per place. [2024-06-27 22:05:28,199 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 406 selfloop transitions, 75 changer transitions 0/490 dead transitions. [2024-06-27 22:05:28,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 490 transitions, 8686 flow [2024-06-27 22:05:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:05:28,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:05:28,200 INFO L175 Difference]: Start difference. First operand has 381 places, 464 transitions, 7524 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:05:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 490 transitions, 8686 flow [2024-06-27 22:05:29,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 490 transitions, 8455 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:29,556 INFO L231 Difference]: Finished difference. Result has 383 places, 468 transitions, 7556 flow [2024-06-27 22:05:29,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7293, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7556, PETRI_PLACES=383, PETRI_TRANSITIONS=468} [2024-06-27 22:05:29,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:05:29,557 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 468 transitions, 7556 flow [2024-06-27 22:05:29,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:29,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:29,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:29,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:05:29,557 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:29,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1018376396, now seen corresponding path program 12 times [2024-06-27 22:05:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:29,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160240893] [2024-06-27 22:05:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:30,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160240893] [2024-06-27 22:05:30,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160240893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:30,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:30,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874392469] [2024-06-27 22:05:30,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:30,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:30,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:30,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 468 transitions, 7556 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:30,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:30,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:30,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:31,838 INFO L124 PetriNetUnfolderBase]: 1580/2936 cut-off events. [2024-06-27 22:05:31,839 INFO L125 PetriNetUnfolderBase]: For 248625/248625 co-relation queries the response was YES. [2024-06-27 22:05:31,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24701 conditions, 2936 events. 1580/2936 cut-off events. For 248625/248625 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 19145 event pairs, 169 based on Foata normal form. 2/2728 useless extension candidates. Maximal degree in co-relation 24519. Up to 2435 conditions per place. [2024-06-27 22:05:31,872 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 436 selfloop transitions, 66 changer transitions 0/511 dead transitions. [2024-06-27 22:05:31,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 511 transitions, 9007 flow [2024-06-27 22:05:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:05:31,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:05:31,873 INFO L175 Difference]: Start difference. First operand has 383 places, 468 transitions, 7556 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:05:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 511 transitions, 9007 flow [2024-06-27 22:05:33,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 511 transitions, 8784 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:33,387 INFO L231 Difference]: Finished difference. Result has 386 places, 488 transitions, 7883 flow [2024-06-27 22:05:33,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7333, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7883, PETRI_PLACES=386, PETRI_TRANSITIONS=488} [2024-06-27 22:05:33,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 22:05:33,387 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 488 transitions, 7883 flow [2024-06-27 22:05:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:33,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:33,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:33,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:05:33,388 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:33,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash -629062016, now seen corresponding path program 13 times [2024-06-27 22:05:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:33,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489014846] [2024-06-27 22:05:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489014846] [2024-06-27 22:05:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489014846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584383414] [2024-06-27 22:05:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:34,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:34,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 488 transitions, 7883 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:34,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:34,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:34,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:35,861 INFO L124 PetriNetUnfolderBase]: 1607/2988 cut-off events. [2024-06-27 22:05:35,862 INFO L125 PetriNetUnfolderBase]: For 254511/254511 co-relation queries the response was YES. [2024-06-27 22:05:35,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25170 conditions, 2988 events. 1607/2988 cut-off events. For 254511/254511 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 19581 event pairs, 198 based on Foata normal form. 2/2780 useless extension candidates. Maximal degree in co-relation 24986. Up to 2539 conditions per place. [2024-06-27 22:05:35,900 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 436 selfloop transitions, 69 changer transitions 0/514 dead transitions. [2024-06-27 22:05:35,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 514 transitions, 9105 flow [2024-06-27 22:05:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:05:35,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:05:35,901 INFO L175 Difference]: Start difference. First operand has 386 places, 488 transitions, 7883 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:05:35,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 514 transitions, 9105 flow [2024-06-27 22:05:37,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 514 transitions, 8889 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:37,577 INFO L231 Difference]: Finished difference. Result has 390 places, 494 transitions, 7948 flow [2024-06-27 22:05:37,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7667, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7948, PETRI_PLACES=390, PETRI_TRANSITIONS=494} [2024-06-27 22:05:37,577 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:05:37,577 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 494 transitions, 7948 flow [2024-06-27 22:05:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:37,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:37,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:37,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:05:37,578 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:37,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1330792780, now seen corresponding path program 14 times [2024-06-27 22:05:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773729592] [2024-06-27 22:05:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:38,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773729592] [2024-06-27 22:05:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773729592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:38,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298251059] [2024-06-27 22:05:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:38,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:38,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 494 transitions, 7948 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:38,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:38,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:40,048 INFO L124 PetriNetUnfolderBase]: 1611/2997 cut-off events. [2024-06-27 22:05:40,048 INFO L125 PetriNetUnfolderBase]: For 242381/242381 co-relation queries the response was YES. [2024-06-27 22:05:40,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24888 conditions, 2997 events. 1611/2997 cut-off events. For 242381/242381 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 19694 event pairs, 202 based on Foata normal form. 2/2787 useless extension candidates. Maximal degree in co-relation 24702. Up to 2511 conditions per place. [2024-06-27 22:05:40,080 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 419 selfloop transitions, 90 changer transitions 0/518 dead transitions. [2024-06-27 22:05:40,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 518 transitions, 9172 flow [2024-06-27 22:05:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:05:40,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:05:40,081 INFO L175 Difference]: Start difference. First operand has 390 places, 494 transitions, 7948 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:05:40,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 518 transitions, 9172 flow [2024-06-27 22:05:41,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 518 transitions, 8959 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:41,687 INFO L231 Difference]: Finished difference. Result has 392 places, 498 transitions, 8039 flow [2024-06-27 22:05:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7735, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8039, PETRI_PLACES=392, PETRI_TRANSITIONS=498} [2024-06-27 22:05:41,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 22:05:41,688 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 498 transitions, 8039 flow [2024-06-27 22:05:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:41,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:41,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:41,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:05:41,688 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:41,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1261081406, now seen corresponding path program 1 times [2024-06-27 22:05:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:41,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361068088] [2024-06-27 22:05:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:41,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:43,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361068088] [2024-06-27 22:05:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361068088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:43,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:05:43,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567658912] [2024-06-27 22:05:43,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:43,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:05:43,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:05:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:05:43,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:43,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 498 transitions, 8039 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:43,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:43,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:43,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:44,598 INFO L124 PetriNetUnfolderBase]: 1624/3017 cut-off events. [2024-06-27 22:05:44,598 INFO L125 PetriNetUnfolderBase]: For 244700/244700 co-relation queries the response was YES. [2024-06-27 22:05:44,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25026 conditions, 3017 events. 1624/3017 cut-off events. For 244700/244700 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19820 event pairs, 211 based on Foata normal form. 2/2803 useless extension candidates. Maximal degree in co-relation 24839. Up to 2586 conditions per place. [2024-06-27 22:05:44,637 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 453 selfloop transitions, 59 changer transitions 0/521 dead transitions. [2024-06-27 22:05:44,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 521 transitions, 9277 flow [2024-06-27 22:05:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:05:44,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:05:44,638 INFO L175 Difference]: Start difference. First operand has 392 places, 498 transitions, 8039 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:05:44,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 521 transitions, 9277 flow [2024-06-27 22:05:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 521 transitions, 9011 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:46,082 INFO L231 Difference]: Finished difference. Result has 395 places, 503 transitions, 8052 flow [2024-06-27 22:05:46,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7773, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8052, PETRI_PLACES=395, PETRI_TRANSITIONS=503} [2024-06-27 22:05:46,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 22:05:46,082 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 503 transitions, 8052 flow [2024-06-27 22:05:46,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:46,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:46,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:46,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:05:46,083 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:46,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash 503207672, now seen corresponding path program 2 times [2024-06-27 22:05:46,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476602105] [2024-06-27 22:05:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476602105] [2024-06-27 22:05:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476602105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:47,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:05:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34915401] [2024-06-27 22:05:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:47,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:05:47,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:05:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:05:47,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:47,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 503 transitions, 8052 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:47,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:47,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:47,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:48,882 INFO L124 PetriNetUnfolderBase]: 1637/3040 cut-off events. [2024-06-27 22:05:48,883 INFO L125 PetriNetUnfolderBase]: For 247031/247031 co-relation queries the response was YES. [2024-06-27 22:05:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25050 conditions, 3040 events. 1637/3040 cut-off events. For 247031/247031 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 20043 event pairs, 211 based on Foata normal form. 2/2829 useless extension candidates. Maximal degree in co-relation 24861. Up to 2561 conditions per place. [2024-06-27 22:05:48,923 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 455 selfloop transitions, 61 changer transitions 0/525 dead transitions. [2024-06-27 22:05:48,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 525 transitions, 9258 flow [2024-06-27 22:05:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:05:48,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:05:48,924 INFO L175 Difference]: Start difference. First operand has 395 places, 503 transitions, 8052 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:05:48,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 525 transitions, 9258 flow [2024-06-27 22:05:50,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 525 transitions, 9077 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:50,487 INFO L231 Difference]: Finished difference. Result has 399 places, 505 transitions, 8091 flow [2024-06-27 22:05:50,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7871, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8091, PETRI_PLACES=399, PETRI_TRANSITIONS=505} [2024-06-27 22:05:50,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 22:05:50,488 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 505 transitions, 8091 flow [2024-06-27 22:05:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:50,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:50,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:05:50,488 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:50,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash 413719352, now seen corresponding path program 3 times [2024-06-27 22:05:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88521774] [2024-06-27 22:05:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:52,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:52,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88521774] [2024-06-27 22:05:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88521774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:52,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:05:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965397917] [2024-06-27 22:05:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:05:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:05:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:05:52,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:52,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 505 transitions, 8091 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:52,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:53,573 INFO L124 PetriNetUnfolderBase]: 1650/3046 cut-off events. [2024-06-27 22:05:53,573 INFO L125 PetriNetUnfolderBase]: For 248955/248955 co-relation queries the response was YES. [2024-06-27 22:05:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25235 conditions, 3046 events. 1650/3046 cut-off events. For 248955/248955 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 20135 event pairs, 204 based on Foata normal form. 2/2836 useless extension candidates. Maximal degree in co-relation 25045. Up to 2518 conditions per place. [2024-06-27 22:05:53,612 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 456 selfloop transitions, 65 changer transitions 0/530 dead transitions. [2024-06-27 22:05:53,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 530 transitions, 9323 flow [2024-06-27 22:05:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:05:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:05:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:05:53,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:05:53,613 INFO L175 Difference]: Start difference. First operand has 399 places, 505 transitions, 8091 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:05:53,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 530 transitions, 9323 flow [2024-06-27 22:05:55,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 530 transitions, 9133 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:55,097 INFO L231 Difference]: Finished difference. Result has 402 places, 507 transitions, 8134 flow [2024-06-27 22:05:55,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7901, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8134, PETRI_PLACES=402, PETRI_TRANSITIONS=507} [2024-06-27 22:05:55,097 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 22:05:55,097 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 507 transitions, 8134 flow [2024-06-27 22:05:55,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:55,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:55,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:05:55,097 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:55,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 359314386, now seen corresponding path program 4 times [2024-06-27 22:05:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676384426] [2024-06-27 22:05:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676384426] [2024-06-27 22:05:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676384426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:05:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101724703] [2024-06-27 22:05:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:05:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:05:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:05:57,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:05:57,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 507 transitions, 8134 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:57,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:57,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:05:57,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:58,309 INFO L124 PetriNetUnfolderBase]: 1667/3089 cut-off events. [2024-06-27 22:05:58,309 INFO L125 PetriNetUnfolderBase]: For 256864/256864 co-relation queries the response was YES. [2024-06-27 22:05:58,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25550 conditions, 3089 events. 1667/3089 cut-off events. For 256864/256864 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 20524 event pairs, 247 based on Foata normal form. 2/2878 useless extension candidates. Maximal degree in co-relation 25359. Up to 2644 conditions per place. [2024-06-27 22:05:58,351 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 452 selfloop transitions, 67 changer transitions 0/528 dead transitions. [2024-06-27 22:05:58,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 528 transitions, 9354 flow [2024-06-27 22:05:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:05:58,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:05:58,352 INFO L175 Difference]: Start difference. First operand has 402 places, 507 transitions, 8134 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:05:58,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 528 transitions, 9354 flow [2024-06-27 22:05:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 528 transitions, 9145 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 22:05:59,934 INFO L231 Difference]: Finished difference. Result has 403 places, 508 transitions, 8097 flow [2024-06-27 22:05:59,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7925, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8097, PETRI_PLACES=403, PETRI_TRANSITIONS=508} [2024-06-27 22:05:59,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-27 22:05:59,935 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 508 transitions, 8097 flow [2024-06-27 22:05:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:05:59,935 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:59,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 359136756, now seen corresponding path program 5 times [2024-06-27 22:05:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671060918] [2024-06-27 22:05:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671060918] [2024-06-27 22:06:01,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671060918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:01,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:01,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:06:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907984412] [2024-06-27 22:06:01,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:06:01,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:06:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:06:02,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:02,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 508 transitions, 8097 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:02,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:02,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:02,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:03,210 INFO L124 PetriNetUnfolderBase]: 1680/3113 cut-off events. [2024-06-27 22:06:03,210 INFO L125 PetriNetUnfolderBase]: For 261162/261162 co-relation queries the response was YES. [2024-06-27 22:06:03,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25686 conditions, 3113 events. 1680/3113 cut-off events. For 261162/261162 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 20740 event pairs, 241 based on Foata normal form. 2/2903 useless extension candidates. Maximal degree in co-relation 25494. Up to 2637 conditions per place. [2024-06-27 22:06:03,251 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 453 selfloop transitions, 68 changer transitions 0/530 dead transitions. [2024-06-27 22:06:03,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 530 transitions, 9329 flow [2024-06-27 22:06:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:06:03,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:06:03,252 INFO L175 Difference]: Start difference. First operand has 403 places, 508 transitions, 8097 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:06:03,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 530 transitions, 9329 flow [2024-06-27 22:06:04,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 530 transitions, 9187 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:04,625 INFO L231 Difference]: Finished difference. Result has 406 places, 510 transitions, 8198 flow [2024-06-27 22:06:04,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7955, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8198, PETRI_PLACES=406, PETRI_TRANSITIONS=510} [2024-06-27 22:06:04,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 22:06:04,626 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 510 transitions, 8198 flow [2024-06-27 22:06:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:04,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:04,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:04,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:06:04,626 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:04,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash -183593984, now seen corresponding path program 6 times [2024-06-27 22:06:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984705775] [2024-06-27 22:06:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984705775] [2024-06-27 22:06:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984705775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:06:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764322823] [2024-06-27 22:06:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:06:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:06:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:06:07,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:07,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 510 transitions, 8198 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:07,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:07,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:07,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:08,661 INFO L124 PetriNetUnfolderBase]: 1693/3137 cut-off events. [2024-06-27 22:06:08,661 INFO L125 PetriNetUnfolderBase]: For 268079/268079 co-relation queries the response was YES. [2024-06-27 22:06:08,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25993 conditions, 3137 events. 1693/3137 cut-off events. For 268079/268079 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 20920 event pairs, 249 based on Foata normal form. 2/2924 useless extension candidates. Maximal degree in co-relation 25800. Up to 2674 conditions per place. [2024-06-27 22:06:08,702 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 438 selfloop transitions, 83 changer transitions 0/530 dead transitions. [2024-06-27 22:06:08,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 530 transitions, 9426 flow [2024-06-27 22:06:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:06:08,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:06:08,703 INFO L175 Difference]: Start difference. First operand has 406 places, 510 transitions, 8198 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:06:08,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 530 transitions, 9426 flow [2024-06-27 22:06:10,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 530 transitions, 9203 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:10,260 INFO L231 Difference]: Finished difference. Result has 408 places, 512 transitions, 8252 flow [2024-06-27 22:06:10,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7975, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8252, PETRI_PLACES=408, PETRI_TRANSITIONS=512} [2024-06-27 22:06:10,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 22:06:10,261 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 512 transitions, 8252 flow [2024-06-27 22:06:10,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:10,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:06:10,261 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:10,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -183587040, now seen corresponding path program 1 times [2024-06-27 22:06:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:10,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701033834] [2024-06-27 22:06:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:13,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:13,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701033834] [2024-06-27 22:06:13,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701033834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:13,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:13,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:06:13,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923817947] [2024-06-27 22:06:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:13,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:06:13,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:13,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:06:13,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:06:13,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:06:13,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 512 transitions, 8252 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:13,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:13,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:06:13,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:15,047 INFO L124 PetriNetUnfolderBase]: 1463/2792 cut-off events. [2024-06-27 22:06:15,047 INFO L125 PetriNetUnfolderBase]: For 261209/261220 co-relation queries the response was YES. [2024-06-27 22:06:15,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23318 conditions, 2792 events. 1463/2792 cut-off events. For 261209/261220 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 18861 event pairs, 250 based on Foata normal form. 7/2525 useless extension candidates. Maximal degree in co-relation 23124. Up to 2206 conditions per place. [2024-06-27 22:06:15,080 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 387 selfloop transitions, 125 changer transitions 0/530 dead transitions. [2024-06-27 22:06:15,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 530 transitions, 9858 flow [2024-06-27 22:06:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:06:15,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:06:15,082 INFO L175 Difference]: Start difference. First operand has 408 places, 512 transitions, 8252 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:06:15,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 530 transitions, 9858 flow [2024-06-27 22:06:16,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 530 transitions, 9601 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:16,643 INFO L231 Difference]: Finished difference. Result has 410 places, 514 transitions, 8290 flow [2024-06-27 22:06:16,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8290, PETRI_PLACES=410, PETRI_TRANSITIONS=514} [2024-06-27 22:06:16,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 22:06:16,643 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 514 transitions, 8290 flow [2024-06-27 22:06:16,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:16,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:16,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:16,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:06:16,644 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:16,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 365816450, now seen corresponding path program 2 times [2024-06-27 22:06:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96017914] [2024-06-27 22:06:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:16,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96017914] [2024-06-27 22:06:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96017914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:06:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647101062] [2024-06-27 22:06:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:06:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:06:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:06:18,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:06:18,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 514 transitions, 8290 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:18,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:18,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:06:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:20,084 INFO L124 PetriNetUnfolderBase]: 1461/2807 cut-off events. [2024-06-27 22:06:20,084 INFO L125 PetriNetUnfolderBase]: For 256191/256202 co-relation queries the response was YES. [2024-06-27 22:06:20,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23156 conditions, 2807 events. 1461/2807 cut-off events. For 256191/256202 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 19008 event pairs, 234 based on Foata normal form. 7/2534 useless extension candidates. Maximal degree in co-relation 22961. Up to 2204 conditions per place. [2024-06-27 22:06:20,118 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 376 selfloop transitions, 135 changer transitions 0/529 dead transitions. [2024-06-27 22:06:20,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 529 transitions, 9602 flow [2024-06-27 22:06:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:06:20,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:06:20,120 INFO L175 Difference]: Start difference. First operand has 410 places, 514 transitions, 8290 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:06:20,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 529 transitions, 9602 flow [2024-06-27 22:06:21,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 529 transitions, 9314 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:21,886 INFO L231 Difference]: Finished difference. Result has 411 places, 514 transitions, 8277 flow [2024-06-27 22:06:21,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8002, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8277, PETRI_PLACES=411, PETRI_TRANSITIONS=514} [2024-06-27 22:06:21,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 22:06:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 514 transitions, 8277 flow [2024-06-27 22:06:21,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:21,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:21,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:06:21,887 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash -183356400, now seen corresponding path program 3 times [2024-06-27 22:06:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045016612] [2024-06-27 22:06:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:24,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:24,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045016612] [2024-06-27 22:06:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045016612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:24,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:24,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:06:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563932045] [2024-06-27 22:06:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:06:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:06:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:06:24,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:06:24,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 514 transitions, 8277 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:24,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:24,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:06:24,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:25,920 INFO L124 PetriNetUnfolderBase]: 1459/2804 cut-off events. [2024-06-27 22:06:25,921 INFO L125 PetriNetUnfolderBase]: For 250684/250695 co-relation queries the response was YES. [2024-06-27 22:06:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22968 conditions, 2804 events. 1459/2804 cut-off events. For 250684/250695 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 18982 event pairs, 234 based on Foata normal form. 7/2531 useless extension candidates. Maximal degree in co-relation 22772. Up to 2202 conditions per place. [2024-06-27 22:06:25,960 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 377 selfloop transitions, 133 changer transitions 0/528 dead transitions. [2024-06-27 22:06:25,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 528 transitions, 9331 flow [2024-06-27 22:06:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:06:25,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:06:25,961 INFO L175 Difference]: Start difference. First operand has 411 places, 514 transitions, 8277 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:06:25,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 528 transitions, 9331 flow [2024-06-27 22:06:27,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 528 transitions, 9033 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:27,341 INFO L231 Difference]: Finished difference. Result has 414 places, 514 transitions, 8250 flow [2024-06-27 22:06:27,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7979, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8250, PETRI_PLACES=414, PETRI_TRANSITIONS=514} [2024-06-27 22:06:27,342 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 22:06:27,342 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 514 transitions, 8250 flow [2024-06-27 22:06:27,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:27,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:06:27,342 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -183347720, now seen corresponding path program 1 times [2024-06-27 22:06:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662481299] [2024-06-27 22:06:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662481299] [2024-06-27 22:06:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662481299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:29,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:29,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:06:29,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868456768] [2024-06-27 22:06:29,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:06:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:06:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:06:29,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:06:29,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 514 transitions, 8250 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:29,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:29,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:06:29,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,867 INFO L124 PetriNetUnfolderBase]: 1523/2965 cut-off events. [2024-06-27 22:06:30,867 INFO L125 PetriNetUnfolderBase]: For 334490/334501 co-relation queries the response was YES. [2024-06-27 22:06:30,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 2965 events. 1523/2965 cut-off events. For 334490/334501 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 20466 event pairs, 280 based on Foata normal form. 16/2693 useless extension candidates. Maximal degree in co-relation 23879. Up to 2229 conditions per place. [2024-06-27 22:06:30,904 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 397 selfloop transitions, 121 changer transitions 0/536 dead transitions. [2024-06-27 22:06:30,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 536 transitions, 9474 flow [2024-06-27 22:06:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:06:30,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:06:30,905 INFO L175 Difference]: Start difference. First operand has 414 places, 514 transitions, 8250 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:06:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 536 transitions, 9474 flow [2024-06-27 22:06:32,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 536 transitions, 9143 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:06:32,610 INFO L231 Difference]: Finished difference. Result has 414 places, 515 transitions, 8206 flow [2024-06-27 22:06:32,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7919, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8206, PETRI_PLACES=414, PETRI_TRANSITIONS=515} [2024-06-27 22:06:32,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 22:06:32,610 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 515 transitions, 8206 flow [2024-06-27 22:06:32,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:32,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:32,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:32,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:06:32,611 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:32,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1515126404, now seen corresponding path program 7 times [2024-06-27 22:06:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351638496] [2024-06-27 22:06:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:34,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351638496] [2024-06-27 22:06:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351638496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:34,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:34,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:06:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599347769] [2024-06-27 22:06:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:06:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:06:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:06:34,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:34,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 515 transitions, 8206 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:34,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:34,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:34,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:36,067 INFO L124 PetriNetUnfolderBase]: 1780/3350 cut-off events. [2024-06-27 22:06:36,067 INFO L125 PetriNetUnfolderBase]: For 277872/277872 co-relation queries the response was YES. [2024-06-27 22:06:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27096 conditions, 3350 events. 1780/3350 cut-off events. For 277872/277872 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 22735 event pairs, 279 based on Foata normal form. 2/3120 useless extension candidates. Maximal degree in co-relation 26898. Up to 2837 conditions per place. [2024-06-27 22:06:36,104 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 447 selfloop transitions, 79 changer transitions 0/535 dead transitions. [2024-06-27 22:06:36,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 9454 flow [2024-06-27 22:06:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:06:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:06:36,105 INFO L175 Difference]: Start difference. First operand has 414 places, 515 transitions, 8206 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:06:36,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 9454 flow [2024-06-27 22:06:37,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 9195 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:37,921 INFO L231 Difference]: Finished difference. Result has 416 places, 517 transitions, 8219 flow [2024-06-27 22:06:37,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7947, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8219, PETRI_PLACES=416, PETRI_TRANSITIONS=517} [2024-06-27 22:06:37,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 22:06:37,922 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 517 transitions, 8219 flow [2024-06-27 22:06:37,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:37,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:37,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:37,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:06:37,922 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:37,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1508870294, now seen corresponding path program 8 times [2024-06-27 22:06:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881682076] [2024-06-27 22:06:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881682076] [2024-06-27 22:06:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881682076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:06:40,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099035984] [2024-06-27 22:06:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:40,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:06:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:06:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:06:40,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:40,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 517 transitions, 8219 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:40,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:40,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:40,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:41,725 INFO L124 PetriNetUnfolderBase]: 1793/3373 cut-off events. [2024-06-27 22:06:41,725 INFO L125 PetriNetUnfolderBase]: For 283774/283774 co-relation queries the response was YES. [2024-06-27 22:06:41,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27220 conditions, 3373 events. 1793/3373 cut-off events. For 283774/283774 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 22902 event pairs, 286 based on Foata normal form. 2/3143 useless extension candidates. Maximal degree in co-relation 27021. Up to 2872 conditions per place. [2024-06-27 22:06:41,767 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 455 selfloop transitions, 73 changer transitions 0/537 dead transitions. [2024-06-27 22:06:41,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 537 transitions, 9475 flow [2024-06-27 22:06:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:06:41,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:06:41,768 INFO L175 Difference]: Start difference. First operand has 416 places, 517 transitions, 8219 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:06:41,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 537 transitions, 9475 flow [2024-06-27 22:06:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 537 transitions, 9221 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:43,496 INFO L231 Difference]: Finished difference. Result has 418 places, 519 transitions, 8229 flow [2024-06-27 22:06:43,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7965, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8229, PETRI_PLACES=418, PETRI_TRANSITIONS=519} [2024-06-27 22:06:43,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-27 22:06:43,497 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 519 transitions, 8229 flow [2024-06-27 22:06:43,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:43,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:43,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:43,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:06:43,497 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:43,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1736771444, now seen corresponding path program 9 times [2024-06-27 22:06:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161655580] [2024-06-27 22:06:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:45,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161655580] [2024-06-27 22:06:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161655580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:45,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:06:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830336512] [2024-06-27 22:06:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:06:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:06:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:06:45,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 519 transitions, 8229 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:46,691 INFO L124 PetriNetUnfolderBase]: 1806/3396 cut-off events. [2024-06-27 22:06:46,691 INFO L125 PetriNetUnfolderBase]: For 288915/288915 co-relation queries the response was YES. [2024-06-27 22:06:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27388 conditions, 3396 events. 1806/3396 cut-off events. For 288915/288915 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 23082 event pairs, 293 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 27188. Up to 2836 conditions per place. [2024-06-27 22:06:46,736 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 422 selfloop transitions, 108 changer transitions 0/539 dead transitions. [2024-06-27 22:06:46,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 539 transitions, 9493 flow [2024-06-27 22:06:46,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:06:46,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:06:46,737 INFO L175 Difference]: Start difference. First operand has 418 places, 519 transitions, 8229 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:06:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 539 transitions, 9493 flow [2024-06-27 22:06:48,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 539 transitions, 9247 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:48,515 INFO L231 Difference]: Finished difference. Result has 420 places, 521 transitions, 8321 flow [2024-06-27 22:06:48,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7983, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8321, PETRI_PLACES=420, PETRI_TRANSITIONS=521} [2024-06-27 22:06:48,516 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-27 22:06:48,516 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 521 transitions, 8321 flow [2024-06-27 22:06:48,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:48,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:48,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:48,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:06:48,516 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:48,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1508692664, now seen corresponding path program 10 times [2024-06-27 22:06:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750440276] [2024-06-27 22:06:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:50,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:50,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750440276] [2024-06-27 22:06:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750440276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:50,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:06:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033605283] [2024-06-27 22:06:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:06:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:50,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:06:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:06:50,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:06:50,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 521 transitions, 8321 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:50,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:50,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:06:50,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:51,577 INFO L124 PetriNetUnfolderBase]: 1819/3420 cut-off events. [2024-06-27 22:06:51,577 INFO L125 PetriNetUnfolderBase]: For 294898/294898 co-relation queries the response was YES. [2024-06-27 22:06:51,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27648 conditions, 3420 events. 1819/3420 cut-off events. For 294898/294898 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 23300 event pairs, 287 based on Foata normal form. 2/3190 useless extension candidates. Maximal degree in co-relation 27447. Up to 2892 conditions per place. [2024-06-27 22:06:51,621 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 461 selfloop transitions, 73 changer transitions 0/543 dead transitions. [2024-06-27 22:06:51,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 543 transitions, 9605 flow [2024-06-27 22:06:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:06:51,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:06:51,622 INFO L175 Difference]: Start difference. First operand has 420 places, 521 transitions, 8321 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:06:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 543 transitions, 9605 flow [2024-06-27 22:06:53,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 543 transitions, 9285 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:53,356 INFO L231 Difference]: Finished difference. Result has 421 places, 523 transitions, 8273 flow [2024-06-27 22:06:53,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8001, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8273, PETRI_PLACES=421, PETRI_TRANSITIONS=523} [2024-06-27 22:06:53,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 22:06:53,356 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 523 transitions, 8273 flow [2024-06-27 22:06:53,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:53,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:53,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:53,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:06:53,357 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1508877238, now seen corresponding path program 4 times [2024-06-27 22:06:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293067408] [2024-06-27 22:06:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:56,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293067408] [2024-06-27 22:06:56,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293067408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:56,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:56,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:06:56,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351527049] [2024-06-27 22:06:56,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:06:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:06:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:06:57,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:06:57,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 523 transitions, 8273 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:57,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:57,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:06:57,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:58,199 INFO L124 PetriNetUnfolderBase]: 1579/3060 cut-off events. [2024-06-27 22:06:58,199 INFO L125 PetriNetUnfolderBase]: For 276496/276507 co-relation queries the response was YES. [2024-06-27 22:06:58,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24557 conditions, 3060 events. 1579/3060 cut-off events. For 276496/276507 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 21204 event pairs, 296 based on Foata normal form. 7/2773 useless extension candidates. Maximal degree in co-relation 24355. Up to 2512 conditions per place. [2024-06-27 22:06:58,239 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 416 selfloop transitions, 101 changer transitions 0/535 dead transitions. [2024-06-27 22:06:58,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 535 transitions, 9335 flow [2024-06-27 22:06:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:06:58,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:06:58,240 INFO L175 Difference]: Start difference. First operand has 421 places, 523 transitions, 8273 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:06:58,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 535 transitions, 9335 flow [2024-06-27 22:06:59,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 535 transitions, 9067 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:59,924 INFO L231 Difference]: Finished difference. Result has 424 places, 523 transitions, 8212 flow [2024-06-27 22:06:59,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8212, PETRI_PLACES=424, PETRI_TRANSITIONS=523} [2024-06-27 22:06:59,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 22:06:59,924 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 523 transitions, 8212 flow [2024-06-27 22:06:59,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:59,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:59,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:59,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:06:59,925 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:59,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1745052598, now seen corresponding path program 5 times [2024-06-27 22:06:59,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:59,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542684990] [2024-06-27 22:06:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542684990] [2024-06-27 22:07:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542684990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:07:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727194214] [2024-06-27 22:07:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:07:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:07:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:07:02,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:02,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 523 transitions, 8212 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:02,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:02,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:02,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:03,843 INFO L124 PetriNetUnfolderBase]: 1577/3057 cut-off events. [2024-06-27 22:07:03,843 INFO L125 PetriNetUnfolderBase]: For 267454/267465 co-relation queries the response was YES. [2024-06-27 22:07:03,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24197 conditions, 3057 events. 1577/3057 cut-off events. For 267454/267465 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 21166 event pairs, 296 based on Foata normal form. 7/2771 useless extension candidates. Maximal degree in co-relation 23994. Up to 2254 conditions per place. [2024-06-27 22:07:03,880 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 191 changer transitions 0/537 dead transitions. [2024-06-27 22:07:03,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 537 transitions, 9567 flow [2024-06-27 22:07:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:07:03,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:07:03,881 INFO L175 Difference]: Start difference. First operand has 424 places, 523 transitions, 8212 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:07:03,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 537 transitions, 9567 flow [2024-06-27 22:07:05,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 537 transitions, 9215 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 22:07:05,742 INFO L231 Difference]: Finished difference. Result has 424 places, 523 transitions, 8247 flow [2024-06-27 22:07:05,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7860, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8247, PETRI_PLACES=424, PETRI_TRANSITIONS=523} [2024-06-27 22:07:05,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 22:07:05,742 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 523 transitions, 8247 flow [2024-06-27 22:07:05,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:05,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:05,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:07:05,743 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:05,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1745061278, now seen corresponding path program 2 times [2024-06-27 22:07:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799192072] [2024-06-27 22:07:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799192072] [2024-06-27 22:07:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799192072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:08,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:08,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:07:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181893673] [2024-06-27 22:07:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:07:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:07:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:07:08,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:08,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 523 transitions, 8247 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:08,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:08,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:08,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:09,312 INFO L124 PetriNetUnfolderBase]: 1598/3106 cut-off events. [2024-06-27 22:07:09,313 INFO L125 PetriNetUnfolderBase]: For 283583/283594 co-relation queries the response was YES. [2024-06-27 22:07:09,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24874 conditions, 3106 events. 1598/3106 cut-off events. For 283583/283594 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 21653 event pairs, 300 based on Foata normal form. 8/2815 useless extension candidates. Maximal degree in co-relation 24670. Up to 2441 conditions per place. [2024-06-27 22:07:09,349 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 392 selfloop transitions, 133 changer transitions 0/543 dead transitions. [2024-06-27 22:07:09,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 543 transitions, 9504 flow [2024-06-27 22:07:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:07:09,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:07:09,350 INFO L175 Difference]: Start difference. First operand has 424 places, 523 transitions, 8247 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:07:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 543 transitions, 9504 flow [2024-06-27 22:07:11,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 543 transitions, 9105 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:07:11,101 INFO L231 Difference]: Finished difference. Result has 426 places, 527 transitions, 8221 flow [2024-06-27 22:07:11,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8221, PETRI_PLACES=426, PETRI_TRANSITIONS=527} [2024-06-27 22:07:11,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-27 22:07:11,102 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 527 transitions, 8221 flow [2024-06-27 22:07:11,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:11,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:11,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:07:11,103 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:11,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1515133348, now seen corresponding path program 6 times [2024-06-27 22:07:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:11,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054848588] [2024-06-27 22:07:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054848588] [2024-06-27 22:07:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054848588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:14,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:07:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715578080] [2024-06-27 22:07:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:07:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:07:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:07:14,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:14,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 527 transitions, 8221 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:14,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:14,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:14,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:15,601 INFO L124 PetriNetUnfolderBase]: 1606/3124 cut-off events. [2024-06-27 22:07:15,601 INFO L125 PetriNetUnfolderBase]: For 276764/276775 co-relation queries the response was YES. [2024-06-27 22:07:15,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24830 conditions, 3124 events. 1606/3124 cut-off events. For 276764/276775 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 21743 event pairs, 309 based on Foata normal form. 7/2828 useless extension candidates. Maximal degree in co-relation 24624. Up to 2511 conditions per place. [2024-06-27 22:07:15,642 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 409 selfloop transitions, 115 changer transitions 0/542 dead transitions. [2024-06-27 22:07:15,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 542 transitions, 9615 flow [2024-06-27 22:07:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:07:15,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:07:15,642 INFO L175 Difference]: Start difference. First operand has 426 places, 527 transitions, 8221 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:07:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 542 transitions, 9615 flow [2024-06-27 22:07:17,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 542 transitions, 9327 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:17,318 INFO L231 Difference]: Finished difference. Result has 430 places, 529 transitions, 8210 flow [2024-06-27 22:07:17,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7933, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8210, PETRI_PLACES=430, PETRI_TRANSITIONS=529} [2024-06-27 22:07:17,319 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-27 22:07:17,319 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 529 transitions, 8210 flow [2024-06-27 22:07:17,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:17,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:17,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:17,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:07:17,319 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:17,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1515372668, now seen corresponding path program 3 times [2024-06-27 22:07:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424193472] [2024-06-27 22:07:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424193472] [2024-06-27 22:07:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424193472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440391214] [2024-06-27 22:07:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:19,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:19,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:19,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 529 transitions, 8210 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:19,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:19,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:20,867 INFO L124 PetriNetUnfolderBase]: 1669/3292 cut-off events. [2024-06-27 22:07:20,867 INFO L125 PetriNetUnfolderBase]: For 372581/372592 co-relation queries the response was YES. [2024-06-27 22:07:20,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25804 conditions, 3292 events. 1669/3292 cut-off events. For 372581/372592 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 23372 event pairs, 345 based on Foata normal form. 16/2992 useless extension candidates. Maximal degree in co-relation 25597. Up to 2540 conditions per place. [2024-06-27 22:07:20,908 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 423 selfloop transitions, 108 changer transitions 0/549 dead transitions. [2024-06-27 22:07:20,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 549 transitions, 9466 flow [2024-06-27 22:07:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:07:20,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:07:20,909 INFO L175 Difference]: Start difference. First operand has 430 places, 529 transitions, 8210 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:07:20,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 549 transitions, 9466 flow [2024-06-27 22:07:23,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 549 transitions, 9214 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:07:23,069 INFO L231 Difference]: Finished difference. Result has 431 places, 530 transitions, 8222 flow [2024-06-27 22:07:23,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7958, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8222, PETRI_PLACES=431, PETRI_TRANSITIONS=530} [2024-06-27 22:07:23,069 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 22:07:23,069 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 530 transitions, 8222 flow [2024-06-27 22:07:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:23,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:23,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:07:23,069 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:23,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2000443008, now seen corresponding path program 4 times [2024-06-27 22:07:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394458421] [2024-06-27 22:07:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394458421] [2024-06-27 22:07:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394458421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:07:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191253468] [2024-06-27 22:07:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:25,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:07:25,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:07:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:07:25,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:25,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 530 transitions, 8222 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:25,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:25,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:25,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:26,882 INFO L124 PetriNetUnfolderBase]: 1705/3375 cut-off events. [2024-06-27 22:07:26,883 INFO L125 PetriNetUnfolderBase]: For 328287/328298 co-relation queries the response was YES. [2024-06-27 22:07:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26960 conditions, 3375 events. 1705/3375 cut-off events. For 328287/328298 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 24152 event pairs, 347 based on Foata normal form. 8/3063 useless extension candidates. Maximal degree in co-relation 26753. Up to 2235 conditions per place. [2024-06-27 22:07:26,927 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 363 selfloop transitions, 175 changer transitions 0/556 dead transitions. [2024-06-27 22:07:26,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 556 transitions, 9902 flow [2024-06-27 22:07:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:07:26,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 22:07:26,928 INFO L175 Difference]: Start difference. First operand has 431 places, 530 transitions, 8222 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:07:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 556 transitions, 9902 flow [2024-06-27 22:07:29,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 556 transitions, 9664 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:29,339 INFO L231 Difference]: Finished difference. Result has 434 places, 532 transitions, 8424 flow [2024-06-27 22:07:29,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7984, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8424, PETRI_PLACES=434, PETRI_TRANSITIONS=532} [2024-06-27 22:07:29,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-27 22:07:29,340 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 532 transitions, 8424 flow [2024-06-27 22:07:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:29,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:29,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:07:29,340 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:29,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1745349578, now seen corresponding path program 5 times [2024-06-27 22:07:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:29,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355310937] [2024-06-27 22:07:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355310937] [2024-06-27 22:07:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355310937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:31,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063680923] [2024-06-27 22:07:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:31,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:07:31,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 532 transitions, 8424 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:31,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:31,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:07:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:32,693 INFO L124 PetriNetUnfolderBase]: 1722/3398 cut-off events. [2024-06-27 22:07:32,693 INFO L125 PetriNetUnfolderBase]: For 335660/335674 co-relation queries the response was YES. [2024-06-27 22:07:32,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27521 conditions, 3398 events. 1722/3398 cut-off events. For 335660/335674 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24422 event pairs, 363 based on Foata normal form. 8/3084 useless extension candidates. Maximal degree in co-relation 27313. Up to 2615 conditions per place. [2024-06-27 22:07:32,731 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 360 selfloop transitions, 170 changer transitions 0/549 dead transitions. [2024-06-27 22:07:32,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 549 transitions, 9642 flow [2024-06-27 22:07:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:07:32,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:07:32,732 INFO L175 Difference]: Start difference. First operand has 434 places, 532 transitions, 8424 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:07:32,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 549 transitions, 9642 flow [2024-06-27 22:07:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 549 transitions, 9384 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:35,090 INFO L231 Difference]: Finished difference. Result has 439 places, 533 transitions, 8556 flow [2024-06-27 22:07:35,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8174, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8556, PETRI_PLACES=439, PETRI_TRANSITIONS=533} [2024-06-27 22:07:35,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 22:07:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 533 transitions, 8556 flow [2024-06-27 22:07:35,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:35,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:35,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:35,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:07:35,091 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:35,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 749440876, now seen corresponding path program 7 times [2024-06-27 22:07:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:35,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086280822] [2024-06-27 22:07:35,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086280822] [2024-06-27 22:07:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086280822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:37,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:37,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:07:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130979207] [2024-06-27 22:07:37,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:07:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:07:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:07:37,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:37,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 533 transitions, 8556 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:37,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:37,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:37,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:39,356 INFO L124 PetriNetUnfolderBase]: 1720/3411 cut-off events. [2024-06-27 22:07:39,356 INFO L125 PetriNetUnfolderBase]: For 314768/314779 co-relation queries the response was YES. [2024-06-27 22:07:39,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27368 conditions, 3411 events. 1720/3411 cut-off events. For 314768/314779 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 24487 event pairs, 363 based on Foata normal form. 7/3093 useless extension candidates. Maximal degree in co-relation 27158. Up to 2770 conditions per place. [2024-06-27 22:07:39,398 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 428 selfloop transitions, 99 changer transitions 0/545 dead transitions. [2024-06-27 22:07:39,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 545 transitions, 9638 flow [2024-06-27 22:07:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:07:39,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:07:39,399 INFO L175 Difference]: Start difference. First operand has 439 places, 533 transitions, 8556 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:07:39,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 545 transitions, 9638 flow [2024-06-27 22:07:41,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 545 transitions, 9256 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:41,611 INFO L231 Difference]: Finished difference. Result has 443 places, 533 transitions, 8377 flow [2024-06-27 22:07:41,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8174, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8377, PETRI_PLACES=443, PETRI_TRANSITIONS=533} [2024-06-27 22:07:41,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 22:07:41,612 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 533 transitions, 8377 flow [2024-06-27 22:07:41,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:41,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:41,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:41,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:07:41,612 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:41,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2008793788, now seen corresponding path program 8 times [2024-06-27 22:07:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871920183] [2024-06-27 22:07:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:44,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:44,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871920183] [2024-06-27 22:07:44,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871920183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:44,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:07:44,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463239443] [2024-06-27 22:07:44,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:44,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:07:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:07:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:07:44,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:44,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 533 transitions, 8377 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:44,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:44,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:45,660 INFO L124 PetriNetUnfolderBase]: 1727/3423 cut-off events. [2024-06-27 22:07:45,660 INFO L125 PetriNetUnfolderBase]: For 316173/316184 co-relation queries the response was YES. [2024-06-27 22:07:45,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27086 conditions, 3423 events. 1727/3423 cut-off events. For 316173/316184 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24608 event pairs, 364 based on Foata normal form. 7/3101 useless extension candidates. Maximal degree in co-relation 26874. Up to 2531 conditions per place. [2024-06-27 22:07:45,703 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 364 selfloop transitions, 166 changer transitions 0/548 dead transitions. [2024-06-27 22:07:45,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 548 transitions, 9791 flow [2024-06-27 22:07:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:07:45,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:07:45,704 INFO L175 Difference]: Start difference. First operand has 443 places, 533 transitions, 8377 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:07:45,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 548 transitions, 9791 flow [2024-06-27 22:07:48,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 548 transitions, 9488 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 22:07:48,181 INFO L231 Difference]: Finished difference. Result has 442 places, 535 transitions, 8451 flow [2024-06-27 22:07:48,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8451, PETRI_PLACES=442, PETRI_TRANSITIONS=535} [2024-06-27 22:07:48,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-27 22:07:48,181 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 535 transitions, 8451 flow [2024-06-27 22:07:48,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:48,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:07:48,182 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:48,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash 971094596, now seen corresponding path program 6 times [2024-06-27 22:07:48,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787851050] [2024-06-27 22:07:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:50,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787851050] [2024-06-27 22:07:50,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787851050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:50,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:50,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:07:50,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538845365] [2024-06-27 22:07:50,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:50,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:07:50,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:07:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:07:50,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:50,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 535 transitions, 8451 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:50,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:50,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:50,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:51,892 INFO L124 PetriNetUnfolderBase]: 1724/3418 cut-off events. [2024-06-27 22:07:51,892 INFO L125 PetriNetUnfolderBase]: For 309602/309613 co-relation queries the response was YES. [2024-06-27 22:07:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26962 conditions, 3418 events. 1724/3418 cut-off events. For 309602/309613 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 24564 event pairs, 363 based on Foata normal form. 8/3097 useless extension candidates. Maximal degree in co-relation 26749. Up to 2680 conditions per place. [2024-06-27 22:07:51,938 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 121 changer transitions 0/551 dead transitions. [2024-06-27 22:07:51,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 551 transitions, 9631 flow [2024-06-27 22:07:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:07:51,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:07:51,939 INFO L175 Difference]: Start difference. First operand has 442 places, 535 transitions, 8451 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:07:51,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 551 transitions, 9631 flow [2024-06-27 22:07:54,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 551 transitions, 9265 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:07:54,346 INFO L231 Difference]: Finished difference. Result has 444 places, 535 transitions, 8331 flow [2024-06-27 22:07:54,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8085, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8331, PETRI_PLACES=444, PETRI_TRANSITIONS=535} [2024-06-27 22:07:54,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 22:07:54,347 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 535 transitions, 8331 flow [2024-06-27 22:07:54,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:54,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:54,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:07:54,348 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:54,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1736778388, now seen corresponding path program 9 times [2024-06-27 22:07:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075181563] [2024-06-27 22:07:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075181563] [2024-06-27 22:07:57,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075181563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:57,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:57,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:07:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348671042] [2024-06-27 22:07:57,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:57,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:07:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:07:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:07:57,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:07:57,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 535 transitions, 8331 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:57,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:57,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:07:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:58,866 INFO L124 PetriNetUnfolderBase]: 1723/3398 cut-off events. [2024-06-27 22:07:58,866 INFO L125 PetriNetUnfolderBase]: For 290486/290500 co-relation queries the response was YES. [2024-06-27 22:07:58,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26462 conditions, 3398 events. 1723/3398 cut-off events. For 290486/290500 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24377 event pairs, 362 based on Foata normal form. 7/3080 useless extension candidates. Maximal degree in co-relation 26248. Up to 2524 conditions per place. [2024-06-27 22:07:58,912 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 171 changer transitions 0/547 dead transitions. [2024-06-27 22:07:58,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 547 transitions, 9417 flow [2024-06-27 22:07:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:07:58,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:07:58,913 INFO L175 Difference]: Start difference. First operand has 444 places, 535 transitions, 8331 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:07:58,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 547 transitions, 9417 flow [2024-06-27 22:08:01,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 547 transitions, 9141 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 22:08:01,321 INFO L231 Difference]: Finished difference. Result has 445 places, 535 transitions, 8402 flow [2024-06-27 22:08:01,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8055, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8402, PETRI_PLACES=445, PETRI_TRANSITIONS=535} [2024-06-27 22:08:01,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 22:08:01,322 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 535 transitions, 8402 flow [2024-06-27 22:08:01,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:01,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:01,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:08:01,322 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:01,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash 64645906, now seen corresponding path program 11 times [2024-06-27 22:08:01,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:01,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444644077] [2024-06-27 22:08:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:01,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:03,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444644077] [2024-06-27 22:08:03,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444644077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:03,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:03,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939121384] [2024-06-27 22:08:03,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:03,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:03,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 535 transitions, 8402 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:05,100 INFO L124 PetriNetUnfolderBase]: 1983/3787 cut-off events. [2024-06-27 22:08:05,100 INFO L125 PetriNetUnfolderBase]: For 310529/310529 co-relation queries the response was YES. [2024-06-27 22:08:05,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29610 conditions, 3787 events. 1983/3787 cut-off events. For 310529/310529 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 26640 event pairs, 368 based on Foata normal form. 2/3531 useless extension candidates. Maximal degree in co-relation 29396. Up to 2957 conditions per place. [2024-06-27 22:08:05,151 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 361 selfloop transitions, 185 changer transitions 0/555 dead transitions. [2024-06-27 22:08:05,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 555 transitions, 9712 flow [2024-06-27 22:08:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:08:05,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:08:05,153 INFO L175 Difference]: Start difference. First operand has 445 places, 535 transitions, 8402 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:08:05,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 555 transitions, 9712 flow [2024-06-27 22:08:07,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 555 transitions, 9332 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:08:07,909 INFO L231 Difference]: Finished difference. Result has 445 places, 537 transitions, 8522 flow [2024-06-27 22:08:07,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8522, PETRI_PLACES=445, PETRI_TRANSITIONS=537} [2024-06-27 22:08:07,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 22:08:07,910 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 537 transitions, 8522 flow [2024-06-27 22:08:07,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:07,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:07,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:07,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:08:07,910 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:07,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash 961577780, now seen corresponding path program 12 times [2024-06-27 22:08:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371450564] [2024-06-27 22:08:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371450564] [2024-06-27 22:08:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371450564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:08:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475198224] [2024-06-27 22:08:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:08:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:08:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:08:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 537 transitions, 8522 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:12,963 INFO L124 PetriNetUnfolderBase]: 1996/3828 cut-off events. [2024-06-27 22:08:12,963 INFO L125 PetriNetUnfolderBase]: For 319910/319910 co-relation queries the response was YES. [2024-06-27 22:08:13,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30003 conditions, 3828 events. 1996/3828 cut-off events. For 319910/319910 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 26998 event pairs, 369 based on Foata normal form. 2/3566 useless extension candidates. Maximal degree in co-relation 29788. Up to 3149 conditions per place. [2024-06-27 22:08:13,013 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 442 selfloop transitions, 106 changer transitions 0/557 dead transitions. [2024-06-27 22:08:13,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 557 transitions, 9840 flow [2024-06-27 22:08:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:08:13,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:08:13,015 INFO L175 Difference]: Start difference. First operand has 445 places, 537 transitions, 8522 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:08:13,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 557 transitions, 9840 flow [2024-06-27 22:08:15,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 557 transitions, 9358 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:15,943 INFO L231 Difference]: Finished difference. Result has 447 places, 539 transitions, 8385 flow [2024-06-27 22:08:15,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8040, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8385, PETRI_PLACES=447, PETRI_TRANSITIONS=539} [2024-06-27 22:08:15,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-27 22:08:15,944 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 539 transitions, 8385 flow [2024-06-27 22:08:15,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:15,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:15,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:15,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:08:15,944 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:15,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash 733676630, now seen corresponding path program 13 times [2024-06-27 22:08:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:15,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059978325] [2024-06-27 22:08:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:18,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059978325] [2024-06-27 22:08:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059978325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:18,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:18,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557104889] [2024-06-27 22:08:18,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:18,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:18,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 539 transitions, 8385 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:18,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:18,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:18,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:19,604 INFO L124 PetriNetUnfolderBase]: 2009/3852 cut-off events. [2024-06-27 22:08:19,604 INFO L125 PetriNetUnfolderBase]: For 326023/326023 co-relation queries the response was YES. [2024-06-27 22:08:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30002 conditions, 3852 events. 2009/3852 cut-off events. For 326023/326023 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27190 event pairs, 370 based on Foata normal form. 2/3589 useless extension candidates. Maximal degree in co-relation 29786. Up to 3197 conditions per place. [2024-06-27 22:08:19,656 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 451 selfloop transitions, 99 changer transitions 0/559 dead transitions. [2024-06-27 22:08:19,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 559 transitions, 9711 flow [2024-06-27 22:08:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:08:19,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:08:19,658 INFO L175 Difference]: Start difference. First operand has 447 places, 539 transitions, 8385 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:08:19,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 559 transitions, 9711 flow [2024-06-27 22:08:22,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 559 transitions, 9382 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:22,512 INFO L231 Difference]: Finished difference. Result has 449 places, 541 transitions, 8391 flow [2024-06-27 22:08:22,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8056, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8391, PETRI_PLACES=449, PETRI_TRANSITIONS=541} [2024-06-27 22:08:22,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-27 22:08:22,512 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 541 transitions, 8391 flow [2024-06-27 22:08:22,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:22,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:22,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:22,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:08:22,513 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:22,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 739932740, now seen corresponding path program 14 times [2024-06-27 22:08:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126681271] [2024-06-27 22:08:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:24,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:24,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126681271] [2024-06-27 22:08:24,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126681271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:24,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:24,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:24,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217218965] [2024-06-27 22:08:24,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:24,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:25,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 541 transitions, 8391 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:26,355 INFO L124 PetriNetUnfolderBase]: 2022/3875 cut-off events. [2024-06-27 22:08:26,355 INFO L125 PetriNetUnfolderBase]: For 332225/332225 co-relation queries the response was YES. [2024-06-27 22:08:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30173 conditions, 3875 events. 2022/3875 cut-off events. For 332225/332225 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 27373 event pairs, 377 based on Foata normal form. 2/3612 useless extension candidates. Maximal degree in co-relation 29956. Up to 3210 conditions per place. [2024-06-27 22:08:26,406 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 450 selfloop transitions, 102 changer transitions 0/561 dead transitions. [2024-06-27 22:08:26,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 561 transitions, 9725 flow [2024-06-27 22:08:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:08:26,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:08:26,407 INFO L175 Difference]: Start difference. First operand has 449 places, 541 transitions, 8391 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:08:26,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 561 transitions, 9725 flow [2024-06-27 22:08:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 561 transitions, 9406 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:29,183 INFO L231 Difference]: Finished difference. Result has 450 places, 543 transitions, 8417 flow [2024-06-27 22:08:29,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8072, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8417, PETRI_PLACES=450, PETRI_TRANSITIONS=543} [2024-06-27 22:08:29,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-27 22:08:29,184 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 543 transitions, 8417 flow [2024-06-27 22:08:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:29,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:29,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:08:29,184 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 733499000, now seen corresponding path program 15 times [2024-06-27 22:08:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081880298] [2024-06-27 22:08:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081880298] [2024-06-27 22:08:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081880298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:31,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:31,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017195161] [2024-06-27 22:08:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:31,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:31,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 543 transitions, 8417 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:31,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:31,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:31,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:32,517 INFO L124 PetriNetUnfolderBase]: 2039/3916 cut-off events. [2024-06-27 22:08:32,518 INFO L125 PetriNetUnfolderBase]: For 339367/339367 co-relation queries the response was YES. [2024-06-27 22:08:32,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30505 conditions, 3916 events. 2039/3916 cut-off events. For 339367/339367 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 27823 event pairs, 361 based on Foata normal form. 2/3649 useless extension candidates. Maximal degree in co-relation 30287. Up to 3229 conditions per place. [2024-06-27 22:08:32,569 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 459 selfloop transitions, 98 changer transitions 0/566 dead transitions. [2024-06-27 22:08:32,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 566 transitions, 9775 flow [2024-06-27 22:08:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:08:32,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:08:32,570 INFO L175 Difference]: Start difference. First operand has 450 places, 543 transitions, 8417 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:08:32,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 566 transitions, 9775 flow [2024-06-27 22:08:35,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 566 transitions, 9446 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:35,580 INFO L231 Difference]: Finished difference. Result has 453 places, 544 transitions, 8342 flow [2024-06-27 22:08:35,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8088, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8342, PETRI_PLACES=453, PETRI_TRANSITIONS=544} [2024-06-27 22:08:35,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 22:08:35,581 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 544 transitions, 8342 flow [2024-06-27 22:08:35,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:35,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:35,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:35,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:08:35,581 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:35,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 733683574, now seen corresponding path program 10 times [2024-06-27 22:08:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767486494] [2024-06-27 22:08:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:35,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767486494] [2024-06-27 22:08:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767486494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:38,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:08:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005828422] [2024-06-27 22:08:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:38,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:08:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:08:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:08:38,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:08:38,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 544 transitions, 8342 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:38,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:38,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:08:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:39,858 INFO L124 PetriNetUnfolderBase]: 1778/3528 cut-off events. [2024-06-27 22:08:39,858 INFO L125 PetriNetUnfolderBase]: For 311170/311181 co-relation queries the response was YES. [2024-06-27 22:08:39,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27109 conditions, 3528 events. 1778/3528 cut-off events. For 311170/311181 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 25630 event pairs, 383 based on Foata normal form. 7/3194 useless extension candidates. Maximal degree in co-relation 26890. Up to 2879 conditions per place. [2024-06-27 22:08:39,907 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 439 selfloop transitions, 97 changer transitions 0/554 dead transitions. [2024-06-27 22:08:39,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 554 transitions, 9436 flow [2024-06-27 22:08:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:08:39,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:08:39,908 INFO L175 Difference]: Start difference. First operand has 453 places, 544 transitions, 8342 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:08:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 554 transitions, 9436 flow [2024-06-27 22:08:42,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 554 transitions, 9220 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:42,746 INFO L231 Difference]: Finished difference. Result has 455 places, 544 transitions, 8325 flow [2024-06-27 22:08:42,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8126, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8325, PETRI_PLACES=455, PETRI_TRANSITIONS=544} [2024-06-27 22:08:42,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-27 22:08:42,746 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 544 transitions, 8325 flow [2024-06-27 22:08:42,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:42,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:42,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:42,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:08:42,747 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:42,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1562238848, now seen corresponding path program 7 times [2024-06-27 22:08:42,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:42,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895734612] [2024-06-27 22:08:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:46,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895734612] [2024-06-27 22:08:46,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895734612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:46,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:46,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:08:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992530516] [2024-06-27 22:08:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:46,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:08:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:46,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:08:46,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:08:46,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:08:46,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 544 transitions, 8325 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:46,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:46,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:08:46,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:48,267 INFO L124 PetriNetUnfolderBase]: 2074/4004 cut-off events. [2024-06-27 22:08:48,267 INFO L125 PetriNetUnfolderBase]: For 359876/359876 co-relation queries the response was YES. [2024-06-27 22:08:48,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31264 conditions, 4004 events. 2074/4004 cut-off events. For 359876/359876 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 28693 event pairs, 470 based on Foata normal form. 2/3752 useless extension candidates. Maximal degree in co-relation 31044. Up to 3286 conditions per place. [2024-06-27 22:08:48,323 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 540 selfloop transitions, 29 changer transitions 0/578 dead transitions. [2024-06-27 22:08:48,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 578 transitions, 10241 flow [2024-06-27 22:08:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:08:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:08:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-06-27 22:08:48,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365904365904366 [2024-06-27 22:08:48,324 INFO L175 Difference]: Start difference. First operand has 455 places, 544 transitions, 8325 flow. Second operand 13 states and 210 transitions. [2024-06-27 22:08:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 578 transitions, 10241 flow [2024-06-27 22:08:51,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 578 transitions, 9852 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 22:08:51,751 INFO L231 Difference]: Finished difference. Result has 457 places, 546 transitions, 8088 flow [2024-06-27 22:08:51,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7936, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8088, PETRI_PLACES=457, PETRI_TRANSITIONS=546} [2024-06-27 22:08:51,751 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 22:08:51,751 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 546 transitions, 8088 flow [2024-06-27 22:08:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:51,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:51,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:08:51,751 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:51,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash 740170324, now seen corresponding path program 11 times [2024-06-27 22:08:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:51,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921268461] [2024-06-27 22:08:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921268461] [2024-06-27 22:08:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921268461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:08:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911303361] [2024-06-27 22:08:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:08:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:08:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:08:54,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:08:54,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 546 transitions, 8088 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:54,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:54,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:08:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:55,803 INFO L124 PetriNetUnfolderBase]: 1814/3606 cut-off events. [2024-06-27 22:08:55,803 INFO L125 PetriNetUnfolderBase]: For 346816/346827 co-relation queries the response was YES. [2024-06-27 22:08:55,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27979 conditions, 3606 events. 1814/3606 cut-off events. For 346816/346827 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 26353 event pairs, 405 based on Foata normal form. 7/3268 useless extension candidates. Maximal degree in co-relation 27759. Up to 2915 conditions per place. [2024-06-27 22:08:55,854 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 431 selfloop transitions, 110 changer transitions 0/559 dead transitions. [2024-06-27 22:08:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 559 transitions, 9538 flow [2024-06-27 22:08:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:08:55,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:08:55,854 INFO L175 Difference]: Start difference. First operand has 457 places, 546 transitions, 8088 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:08:55,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 559 transitions, 9538 flow [2024-06-27 22:08:58,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 559 transitions, 9450 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:58,880 INFO L231 Difference]: Finished difference. Result has 460 places, 548 transitions, 8265 flow [2024-06-27 22:08:58,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8000, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8265, PETRI_PLACES=460, PETRI_TRANSITIONS=548} [2024-06-27 22:08:58,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-27 22:08:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 548 transitions, 8265 flow [2024-06-27 22:08:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:58,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:08:58,880 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:58,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 970166144, now seen corresponding path program 8 times [2024-06-27 22:08:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659537152] [2024-06-27 22:08:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659537152] [2024-06-27 22:09:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659537152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:09:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911382313] [2024-06-27 22:09:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:09:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:09:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:09:01,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:01,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 548 transitions, 8265 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:01,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:01,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:01,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:02,767 INFO L124 PetriNetUnfolderBase]: 1844/3673 cut-off events. [2024-06-27 22:09:02,767 INFO L125 PetriNetUnfolderBase]: For 391359/391370 co-relation queries the response was YES. [2024-06-27 22:09:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29061 conditions, 3673 events. 1844/3673 cut-off events. For 391359/391370 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 26938 event pairs, 399 based on Foata normal form. 8/3332 useless extension candidates. Maximal degree in co-relation 28839. Up to 2921 conditions per place. [2024-06-27 22:09:02,818 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 448 selfloop transitions, 103 changer transitions 0/569 dead transitions. [2024-06-27 22:09:02,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 569 transitions, 9977 flow [2024-06-27 22:09:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:09:02,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:09:02,819 INFO L175 Difference]: Start difference. First operand has 460 places, 548 transitions, 8265 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:09:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 569 transitions, 9977 flow [2024-06-27 22:09:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 569 transitions, 9731 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:06,182 INFO L231 Difference]: Finished difference. Result has 462 places, 550 transitions, 8323 flow [2024-06-27 22:09:06,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8323, PETRI_PLACES=462, PETRI_TRANSITIONS=550} [2024-06-27 22:09:06,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 22:09:06,182 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 550 transitions, 8323 flow [2024-06-27 22:09:06,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:06,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:06,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:09:06,183 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:06,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash -42539866, now seen corresponding path program 12 times [2024-06-27 22:09:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846971504] [2024-06-27 22:09:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:08,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846971504] [2024-06-27 22:09:08,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846971504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:08,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:08,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628163487] [2024-06-27 22:09:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:08,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:09,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:09,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 550 transitions, 8323 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:09,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:09,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:09,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:10,580 INFO L124 PetriNetUnfolderBase]: 1842/3678 cut-off events. [2024-06-27 22:09:10,581 INFO L125 PetriNetUnfolderBase]: For 372305/372316 co-relation queries the response was YES. [2024-06-27 22:09:10,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28905 conditions, 3678 events. 1842/3678 cut-off events. For 372305/372316 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 27047 event pairs, 411 based on Foata normal form. 7/3333 useless extension candidates. Maximal degree in co-relation 28682. Up to 2968 conditions per place. [2024-06-27 22:09:10,634 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 433 selfloop transitions, 109 changer transitions 0/560 dead transitions. [2024-06-27 22:09:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 560 transitions, 9429 flow [2024-06-27 22:09:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:09:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:09:10,635 INFO L175 Difference]: Start difference. First operand has 462 places, 550 transitions, 8323 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:09:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 560 transitions, 9429 flow [2024-06-27 22:09:14,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 560 transitions, 9224 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:14,049 INFO L231 Difference]: Finished difference. Result has 465 places, 550 transitions, 8341 flow [2024-06-27 22:09:14,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8118, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8341, PETRI_PLACES=465, PETRI_TRANSITIONS=550} [2024-06-27 22:09:14,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 22:09:14,050 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 550 transitions, 8341 flow [2024-06-27 22:09:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:14,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:14,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:09:14,051 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:14,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -58861000, now seen corresponding path program 9 times [2024-06-27 22:09:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084745288] [2024-06-27 22:09:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084745288] [2024-06-27 22:09:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084745288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:16,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:16,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:09:16,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399926099] [2024-06-27 22:09:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:16,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:09:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:16,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:09:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:09:16,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:16,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 550 transitions, 8341 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:16,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:16,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:16,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:17,330 INFO L124 PetriNetUnfolderBase]: 1900/3838 cut-off events. [2024-06-27 22:09:17,330 INFO L125 PetriNetUnfolderBase]: For 488451/488462 co-relation queries the response was YES. [2024-06-27 22:09:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29829 conditions, 3838 events. 1900/3838 cut-off events. For 488451/488462 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 28591 event pairs, 445 based on Foata normal form. 16/3489 useless extension candidates. Maximal degree in co-relation 29605. Up to 2989 conditions per place. [2024-06-27 22:09:17,383 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 447 selfloop transitions, 103 changer transitions 0/568 dead transitions. [2024-06-27 22:09:17,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 568 transitions, 9629 flow [2024-06-27 22:09:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:09:17,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:09:17,384 INFO L175 Difference]: Start difference. First operand has 465 places, 550 transitions, 8341 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:09:17,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 568 transitions, 9629 flow [2024-06-27 22:09:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 568 transitions, 9394 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:20,898 INFO L231 Difference]: Finished difference. Result has 467 places, 551 transitions, 8352 flow [2024-06-27 22:09:20,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8106, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8352, PETRI_PLACES=467, PETRI_TRANSITIONS=551} [2024-06-27 22:09:20,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 22:09:20,898 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 551 transitions, 8352 flow [2024-06-27 22:09:20,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:20,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:20,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:20,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:09:20,899 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:20,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 970155914, now seen corresponding path program 10 times [2024-06-27 22:09:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290084301] [2024-06-27 22:09:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290084301] [2024-06-27 22:09:23,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290084301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:23,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:23,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:09:23,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339969178] [2024-06-27 22:09:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:09:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:09:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:09:23,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:23,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 551 transitions, 8352 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:23,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:23,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:23,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:24,768 INFO L124 PetriNetUnfolderBase]: 1914/3873 cut-off events. [2024-06-27 22:09:24,768 INFO L125 PetriNetUnfolderBase]: For 401044/401055 co-relation queries the response was YES. [2024-06-27 22:09:24,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30191 conditions, 3873 events. 1914/3873 cut-off events. For 401044/401055 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 29001 event pairs, 448 based on Foata normal form. 8/3514 useless extension candidates. Maximal degree in co-relation 29965. Up to 3117 conditions per place. [2024-06-27 22:09:24,820 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 446 selfloop transitions, 102 changer transitions 0/566 dead transitions. [2024-06-27 22:09:24,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 566 transitions, 9598 flow [2024-06-27 22:09:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:09:24,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:09:24,821 INFO L175 Difference]: Start difference. First operand has 467 places, 551 transitions, 8352 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:09:24,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 566 transitions, 9598 flow [2024-06-27 22:09:28,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 566 transitions, 9376 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:28,188 INFO L231 Difference]: Finished difference. Result has 469 places, 552 transitions, 8374 flow [2024-06-27 22:09:28,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8374, PETRI_PLACES=469, PETRI_TRANSITIONS=552} [2024-06-27 22:09:28,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 22:09:28,189 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 552 transitions, 8374 flow [2024-06-27 22:09:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:28,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:28,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:28,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:09:28,189 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 970155604, now seen corresponding path program 13 times [2024-06-27 22:09:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913327391] [2024-06-27 22:09:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913327391] [2024-06-27 22:09:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913327391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:30,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:09:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927192001] [2024-06-27 22:09:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:09:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:09:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:09:30,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:30,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 552 transitions, 8374 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:30,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:30,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:30,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:32,251 INFO L124 PetriNetUnfolderBase]: 1919/3883 cut-off events. [2024-06-27 22:09:32,251 INFO L125 PetriNetUnfolderBase]: For 391640/391651 co-relation queries the response was YES. [2024-06-27 22:09:32,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30191 conditions, 3883 events. 1919/3883 cut-off events. For 391640/391651 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 29083 event pairs, 447 based on Foata normal form. 7/3520 useless extension candidates. Maximal degree in co-relation 29964. Up to 3063 conditions per place. [2024-06-27 22:09:32,299 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 135 changer transitions 0/565 dead transitions. [2024-06-27 22:09:32,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 565 transitions, 9842 flow [2024-06-27 22:09:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:09:32,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:09:32,300 INFO L175 Difference]: Start difference. First operand has 469 places, 552 transitions, 8374 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:09:32,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 565 transitions, 9842 flow [2024-06-27 22:09:35,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 565 transitions, 9614 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:36,001 INFO L231 Difference]: Finished difference. Result has 471 places, 554 transitions, 8457 flow [2024-06-27 22:09:36,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8146, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8457, PETRI_PLACES=471, PETRI_TRANSITIONS=554} [2024-06-27 22:09:36,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 22:09:36,001 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 554 transitions, 8457 flow [2024-06-27 22:09:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:36,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:36,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:36,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:09:36,001 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:36,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash -402060582, now seen corresponding path program 11 times [2024-06-27 22:09:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553948226] [2024-06-27 22:09:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:39,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553948226] [2024-06-27 22:09:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553948226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:09:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001030555] [2024-06-27 22:09:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:09:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:09:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:09:40,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:09:40,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 554 transitions, 8457 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:40,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:40,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:09:40,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:41,783 INFO L124 PetriNetUnfolderBase]: 2234/4381 cut-off events. [2024-06-27 22:09:41,783 INFO L125 PetriNetUnfolderBase]: For 414768/414768 co-relation queries the response was YES. [2024-06-27 22:09:41,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33940 conditions, 4381 events. 2234/4381 cut-off events. For 414768/414768 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 32251 event pairs, 554 based on Foata normal form. 2/4089 useless extension candidates. Maximal degree in co-relation 33712. Up to 3738 conditions per place. [2024-06-27 22:09:41,846 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 544 selfloop transitions, 27 changer transitions 0/580 dead transitions. [2024-06-27 22:09:41,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 580 transitions, 9857 flow [2024-06-27 22:09:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:09:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:09:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-27 22:09:41,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158004158004158 [2024-06-27 22:09:41,848 INFO L175 Difference]: Start difference. First operand has 471 places, 554 transitions, 8457 flow. Second operand 13 states and 200 transitions. [2024-06-27 22:09:41,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 580 transitions, 9857 flow [2024-06-27 22:09:46,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 580 transitions, 9500 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:46,153 INFO L231 Difference]: Finished difference. Result has 475 places, 557 transitions, 8220 flow [2024-06-27 22:09:46,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8100, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8220, PETRI_PLACES=475, PETRI_TRANSITIONS=557} [2024-06-27 22:09:46,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-27 22:09:46,153 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 557 transitions, 8220 flow [2024-06-27 22:09:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:46,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:46,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:46,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:09:46,153 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:46,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash 969867614, now seen corresponding path program 12 times [2024-06-27 22:09:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:46,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730197560] [2024-06-27 22:09:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:46,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730197560] [2024-06-27 22:09:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730197560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:09:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750154209] [2024-06-27 22:09:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:09:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:09:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:09:49,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 557 transitions, 8220 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:50,489 INFO L124 PetriNetUnfolderBase]: 1951/3957 cut-off events. [2024-06-27 22:09:50,489 INFO L125 PetriNetUnfolderBase]: For 415656/415667 co-relation queries the response was YES. [2024-06-27 22:09:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30478 conditions, 3957 events. 1951/3957 cut-off events. For 415656/415667 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 29802 event pairs, 463 based on Foata normal form. 8/3589 useless extension candidates. Maximal degree in co-relation 30250. Up to 3194 conditions per place. [2024-06-27 22:09:50,535 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 459 selfloop transitions, 95 changer transitions 0/572 dead transitions. [2024-06-27 22:09:50,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 572 transitions, 9480 flow [2024-06-27 22:09:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:09:50,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:09:50,536 INFO L175 Difference]: Start difference. First operand has 475 places, 557 transitions, 8220 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:09:50,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 572 transitions, 9480 flow [2024-06-27 22:09:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 572 transitions, 9409 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:54,336 INFO L231 Difference]: Finished difference. Result has 477 places, 558 transitions, 8381 flow [2024-06-27 22:09:54,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8149, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8381, PETRI_PLACES=477, PETRI_TRANSITIONS=558} [2024-06-27 22:09:54,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 22:09:54,336 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 558 transitions, 8381 flow [2024-06-27 22:09:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:54,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:54,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:09:54,337 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:54,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:54,337 INFO L85 PathProgramCache]: Analyzing trace with hash 969867304, now seen corresponding path program 14 times [2024-06-27 22:09:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681327090] [2024-06-27 22:09:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681327090] [2024-06-27 22:09:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681327090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:56,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:09:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573809442] [2024-06-27 22:09:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:56,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:09:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:09:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:09:56,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:09:56,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 558 transitions, 8381 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:56,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:56,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:09:56,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:58,340 INFO L124 PetriNetUnfolderBase]: 1963/3977 cut-off events. [2024-06-27 22:09:58,340 INFO L125 PetriNetUnfolderBase]: For 419254/419265 co-relation queries the response was YES. [2024-06-27 22:09:58,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30831 conditions, 3977 events. 1963/3977 cut-off events. For 419254/419265 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 29949 event pairs, 462 based on Foata normal form. 7/3603 useless extension candidates. Maximal degree in co-relation 30602. Up to 3135 conditions per place. [2024-06-27 22:09:58,398 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 425 selfloop transitions, 131 changer transitions 0/574 dead transitions. [2024-06-27 22:09:58,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 574 transitions, 10231 flow [2024-06-27 22:09:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:09:58,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:09:58,399 INFO L175 Difference]: Start difference. First operand has 477 places, 558 transitions, 8381 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:09:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 574 transitions, 10231 flow [2024-06-27 22:10:02,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 574 transitions, 10015 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:02,812 INFO L231 Difference]: Finished difference. Result has 478 places, 562 transitions, 8504 flow [2024-06-27 22:10:02,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8165, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8504, PETRI_PLACES=478, PETRI_TRANSITIONS=562} [2024-06-27 22:10:02,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-27 22:10:02,813 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 562 transitions, 8504 flow [2024-06-27 22:10:02,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:02,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:02,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:10:02,813 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:02,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1550274398, now seen corresponding path program 13 times [2024-06-27 22:10:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136795014] [2024-06-27 22:10:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136795014] [2024-06-27 22:10:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136795014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:10:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458938415] [2024-06-27 22:10:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:10:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:10:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:10:05,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:10:05,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 562 transitions, 8504 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:05,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:05,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:10:05,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:07,663 INFO L124 PetriNetUnfolderBase]: 2284/4463 cut-off events. [2024-06-27 22:10:07,663 INFO L125 PetriNetUnfolderBase]: For 444554/444554 co-relation queries the response was YES. [2024-06-27 22:10:07,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34592 conditions, 4463 events. 2284/4463 cut-off events. For 444554/444554 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 33018 event pairs, 547 based on Foata normal form. 2/4168 useless extension candidates. Maximal degree in co-relation 34363. Up to 3769 conditions per place. [2024-06-27 22:10:07,728 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 552 selfloop transitions, 31 changer transitions 0/592 dead transitions. [2024-06-27 22:10:07,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 592 transitions, 10008 flow [2024-06-27 22:10:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:10:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:10:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-27 22:10:07,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-27 22:10:07,729 INFO L175 Difference]: Start difference. First operand has 478 places, 562 transitions, 8504 flow. Second operand 14 states and 220 transitions. [2024-06-27 22:10:07,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 592 transitions, 10008 flow [2024-06-27 22:10:12,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 592 transitions, 9765 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:10:12,629 INFO L231 Difference]: Finished difference. Result has 486 places, 563 transitions, 8363 flow [2024-06-27 22:10:12,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8261, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8363, PETRI_PLACES=486, PETRI_TRANSITIONS=563} [2024-06-27 22:10:12,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 22:10:12,630 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 563 transitions, 8363 flow [2024-06-27 22:10:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:12,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:12,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:10:12,631 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:12,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash 961584724, now seen corresponding path program 15 times [2024-06-27 22:10:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936550681] [2024-06-27 22:10:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936550681] [2024-06-27 22:10:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936550681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:15,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:15,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:10:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595355649] [2024-06-27 22:10:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:15,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:10:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:10:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:10:15,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:10:15,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 563 transitions, 8363 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:15,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:15,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:10:15,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:17,140 INFO L124 PetriNetUnfolderBase]: 1982/4001 cut-off events. [2024-06-27 22:10:17,140 INFO L125 PetriNetUnfolderBase]: For 429733/429747 co-relation queries the response was YES. [2024-06-27 22:10:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31021 conditions, 4001 events. 1982/4001 cut-off events. For 429733/429747 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 30139 event pairs, 466 based on Foata normal form. 7/3626 useless extension candidates. Maximal degree in co-relation 30790. Up to 3167 conditions per place. [2024-06-27 22:10:17,200 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 423 selfloop transitions, 136 changer transitions 0/577 dead transitions. [2024-06-27 22:10:17,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 577 transitions, 10195 flow [2024-06-27 22:10:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:10:17,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:10:17,201 INFO L175 Difference]: Start difference. First operand has 486 places, 563 transitions, 8363 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:10:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 577 transitions, 10195 flow [2024-06-27 22:10:21,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 577 transitions, 10106 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 22:10:21,989 INFO L231 Difference]: Finished difference. Result has 485 places, 565 transitions, 8591 flow [2024-06-27 22:10:21,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8274, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8591, PETRI_PLACES=485, PETRI_TRANSITIONS=565} [2024-06-27 22:10:21,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 22:10:21,989 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 565 transitions, 8591 flow [2024-06-27 22:10:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:21,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:21,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:10:21,990 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 969858934, now seen corresponding path program 16 times [2024-06-27 22:10:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357273996] [2024-06-27 22:10:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:25,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357273996] [2024-06-27 22:10:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357273996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140971114] [2024-06-27 22:10:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:26,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:10:26,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 565 transitions, 8591 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:26,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:26,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:10:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:27,806 INFO L124 PetriNetUnfolderBase]: 1980/4016 cut-off events. [2024-06-27 22:10:27,806 INFO L125 PetriNetUnfolderBase]: For 419525/419536 co-relation queries the response was YES. [2024-06-27 22:10:27,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30958 conditions, 4016 events. 1980/4016 cut-off events. For 419525/419536 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 30325 event pairs, 465 based on Foata normal form. 7/3636 useless extension candidates. Maximal degree in co-relation 30726. Up to 3165 conditions per place. [2024-06-27 22:10:27,869 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 423 selfloop transitions, 135 changer transitions 0/576 dead transitions. [2024-06-27 22:10:27,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 576 transitions, 10057 flow [2024-06-27 22:10:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:10:27,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:10:27,870 INFO L175 Difference]: Start difference. First operand has 485 places, 565 transitions, 8591 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:10:27,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 576 transitions, 10057 flow [2024-06-27 22:10:32,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 576 transitions, 9747 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:32,726 INFO L231 Difference]: Finished difference. Result has 487 places, 565 transitions, 8556 flow [2024-06-27 22:10:32,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8281, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8556, PETRI_PLACES=487, PETRI_TRANSITIONS=565} [2024-06-27 22:10:32,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 22:10:32,726 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 565 transitions, 8556 flow [2024-06-27 22:10:32,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:32,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:10:32,727 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:32,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash 961815364, now seen corresponding path program 17 times [2024-06-27 22:10:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606944957] [2024-06-27 22:10:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606944957] [2024-06-27 22:10:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606944957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268047463] [2024-06-27 22:10:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:10:36,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 565 transitions, 8556 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:36,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:36,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:10:36,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:38,321 INFO L124 PetriNetUnfolderBase]: 1976/4010 cut-off events. [2024-06-27 22:10:38,321 INFO L125 PetriNetUnfolderBase]: For 409702/409713 co-relation queries the response was YES. [2024-06-27 22:10:38,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30553 conditions, 4010 events. 1976/4010 cut-off events. For 409702/409713 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 30270 event pairs, 465 based on Foata normal form. 8/3632 useless extension candidates. Maximal degree in co-relation 30320. Up to 3161 conditions per place. [2024-06-27 22:10:38,379 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 426 selfloop transitions, 131 changer transitions 0/575 dead transitions. [2024-06-27 22:10:38,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 575 transitions, 9692 flow [2024-06-27 22:10:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:10:38,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:10:38,380 INFO L175 Difference]: Start difference. First operand has 487 places, 565 transitions, 8556 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:10:38,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 575 transitions, 9692 flow [2024-06-27 22:10:42,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 575 transitions, 9377 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 22:10:43,006 INFO L231 Difference]: Finished difference. Result has 489 places, 565 transitions, 8516 flow [2024-06-27 22:10:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8241, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8516, PETRI_PLACES=489, PETRI_TRANSITIONS=565} [2024-06-27 22:10:43,007 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 22:10:43,007 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 565 transitions, 8516 flow [2024-06-27 22:10:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:43,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:43,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:10:43,007 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:43,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 961824044, now seen corresponding path program 14 times [2024-06-27 22:10:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696252301] [2024-06-27 22:10:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696252301] [2024-06-27 22:10:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696252301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:45,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:45,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:10:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327353950] [2024-06-27 22:10:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:45,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:10:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:10:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:10:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:10:45,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 565 transitions, 8516 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:45,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:45,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:10:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:47,164 INFO L124 PetriNetUnfolderBase]: 1973/4005 cut-off events. [2024-06-27 22:10:47,164 INFO L125 PetriNetUnfolderBase]: For 389473/389484 co-relation queries the response was YES. [2024-06-27 22:10:47,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30163 conditions, 4005 events. 1973/4005 cut-off events. For 389473/389484 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 30219 event pairs, 464 based on Foata normal form. 8/3626 useless extension candidates. Maximal degree in co-relation 29928. Up to 3230 conditions per place. [2024-06-27 22:10:47,221 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 467 selfloop transitions, 94 changer transitions 0/579 dead transitions. [2024-06-27 22:10:47,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 579 transitions, 9754 flow [2024-06-27 22:10:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:10:47,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:10:47,222 INFO L175 Difference]: Start difference. First operand has 489 places, 565 transitions, 8516 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:10:47,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 579 transitions, 9754 flow [2024-06-27 22:10:51,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 579 transitions, 9398 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-27 22:10:51,334 INFO L231 Difference]: Finished difference. Result has 488 places, 565 transitions, 8352 flow [2024-06-27 22:10:51,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8160, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8352, PETRI_PLACES=488, PETRI_TRANSITIONS=565} [2024-06-27 22:10:51,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-27 22:10:51,334 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 565 transitions, 8352 flow [2024-06-27 22:10:51,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:51,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:51,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:51,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:10:51,335 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:51,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1207668598, now seen corresponding path program 18 times [2024-06-27 22:10:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:51,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964801862] [2024-06-27 22:10:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:54,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:54,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964801862] [2024-06-27 22:10:54,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964801862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:54,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:54,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:10:54,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298872835] [2024-06-27 22:10:54,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:10:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:10:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:10:54,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:10:54,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 565 transitions, 8352 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:54,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:54,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:10:54,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:56,377 INFO L124 PetriNetUnfolderBase]: 2280/4480 cut-off events. [2024-06-27 22:10:56,377 INFO L125 PetriNetUnfolderBase]: For 364534/364534 co-relation queries the response was YES. [2024-06-27 22:10:56,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33044 conditions, 4480 events. 2280/4480 cut-off events. For 364534/364534 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 33186 event pairs, 559 based on Foata normal form. 1/4174 useless extension candidates. Maximal degree in co-relation 32809. Up to 3816 conditions per place. [2024-06-27 22:10:56,444 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 537 selfloop transitions, 36 changer transitions 0/582 dead transitions. [2024-06-27 22:10:56,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 582 transitions, 9590 flow [2024-06-27 22:10:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:10:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:10:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-27 22:10:56,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 22:10:56,445 INFO L175 Difference]: Start difference. First operand has 488 places, 565 transitions, 8352 flow. Second operand 12 states and 188 transitions. [2024-06-27 22:10:56,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 582 transitions, 9590 flow [2024-06-27 22:11:00,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 582 transitions, 9382 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:00,952 INFO L231 Difference]: Finished difference. Result has 491 places, 565 transitions, 8221 flow [2024-06-27 22:11:00,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8144, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8221, PETRI_PLACES=491, PETRI_TRANSITIONS=565} [2024-06-27 22:11:00,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 22:11:00,952 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 565 transitions, 8221 flow [2024-06-27 22:11:00,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:00,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:00,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:11:00,953 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1207677278, now seen corresponding path program 15 times [2024-06-27 22:11:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240583399] [2024-06-27 22:11:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240583399] [2024-06-27 22:11:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240583399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:03,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:11:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148994890] [2024-06-27 22:11:03,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:11:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:11:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:11:03,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:11:03,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 565 transitions, 8221 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:03,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:03,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:11:03,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:05,560 INFO L124 PetriNetUnfolderBase]: 2303/4528 cut-off events. [2024-06-27 22:11:05,560 INFO L125 PetriNetUnfolderBase]: For 383767/383767 co-relation queries the response was YES. [2024-06-27 22:11:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33343 conditions, 4528 events. 2303/4528 cut-off events. For 383767/383767 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 33688 event pairs, 572 based on Foata normal form. 2/4221 useless extension candidates. Maximal degree in co-relation 33107. Up to 3852 conditions per place. [2024-06-27 22:11:05,628 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 547 selfloop transitions, 33 changer transitions 0/589 dead transitions. [2024-06-27 22:11:05,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 589 transitions, 9635 flow [2024-06-27 22:11:05,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:11:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:11:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 22:11:05,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 22:11:05,629 INFO L175 Difference]: Start difference. First operand has 491 places, 565 transitions, 8221 flow. Second operand 12 states and 189 transitions. [2024-06-27 22:11:05,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 589 transitions, 9635 flow [2024-06-27 22:11:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 589 transitions, 9555 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:11:10,321 INFO L231 Difference]: Finished difference. Result has 493 places, 568 transitions, 8281 flow [2024-06-27 22:11:10,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8145, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8281, PETRI_PLACES=493, PETRI_TRANSITIONS=568} [2024-06-27 22:11:10,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 22:11:10,321 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 568 transitions, 8281 flow [2024-06-27 22:11:10,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:10,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:10,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:10,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:11:10,321 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:10,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 72935740, now seen corresponding path program 16 times [2024-06-27 22:11:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841072495] [2024-06-27 22:11:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:12,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:12,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841072495] [2024-06-27 22:11:12,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841072495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:12,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445237320] [2024-06-27 22:11:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:13,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:11:13,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 568 transitions, 8281 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:13,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:13,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:11:13,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:14,438 INFO L124 PetriNetUnfolderBase]: 2004/4079 cut-off events. [2024-06-27 22:11:14,438 INFO L125 PetriNetUnfolderBase]: For 387506/387517 co-relation queries the response was YES. [2024-06-27 22:11:14,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30433 conditions, 4079 events. 2004/4079 cut-off events. For 387506/387517 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 30987 event pairs, 481 based on Foata normal form. 9/3696 useless extension candidates. Maximal degree in co-relation 30197. Up to 3007 conditions per place. [2024-06-27 22:11:14,499 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 376 selfloop transitions, 188 changer transitions 0/583 dead transitions. [2024-06-27 22:11:14,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 583 transitions, 9573 flow [2024-06-27 22:11:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 22:11:14,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-27 22:11:14,499 INFO L175 Difference]: Start difference. First operand has 493 places, 568 transitions, 8281 flow. Second operand 10 states and 189 transitions. [2024-06-27 22:11:14,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 583 transitions, 9573 flow [2024-06-27 22:11:18,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 583 transitions, 9483 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:18,553 INFO L231 Difference]: Finished difference. Result has 494 places, 569 transitions, 8621 flow [2024-06-27 22:11:18,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8191, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8621, PETRI_PLACES=494, PETRI_TRANSITIONS=569} [2024-06-27 22:11:18,553 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 22:11:18,553 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 569 transitions, 8621 flow [2024-06-27 22:11:18,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:18,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:18,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:11:18,553 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1207965578, now seen corresponding path program 17 times [2024-06-27 22:11:18,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:18,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80492799] [2024-06-27 22:11:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80492799] [2024-06-27 22:11:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80492799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:22,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500084008] [2024-06-27 22:11:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:22,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:22,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:11:22,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 569 transitions, 8621 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:22,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:22,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:11:22,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:24,044 INFO L124 PetriNetUnfolderBase]: 2337/4576 cut-off events. [2024-06-27 22:11:24,044 INFO L125 PetriNetUnfolderBase]: For 400844/400844 co-relation queries the response was YES. [2024-06-27 22:11:24,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34555 conditions, 4576 events. 2337/4576 cut-off events. For 400844/400844 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34118 event pairs, 578 based on Foata normal form. 2/4271 useless extension candidates. Maximal degree in co-relation 34318. Up to 3931 conditions per place. [2024-06-27 22:11:24,111 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 558 selfloop transitions, 24 changer transitions 0/591 dead transitions. [2024-06-27 22:11:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 591 transitions, 10009 flow [2024-06-27 22:11:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:11:24,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 22:11:24,112 INFO L175 Difference]: Start difference. First operand has 494 places, 569 transitions, 8621 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:11:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 591 transitions, 10009 flow [2024-06-27 22:11:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 591 transitions, 9593 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:28,819 INFO L231 Difference]: Finished difference. Result has 497 places, 570 transitions, 8297 flow [2024-06-27 22:11:28,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8205, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8297, PETRI_PLACES=497, PETRI_TRANSITIONS=570} [2024-06-27 22:11:28,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:11:28,819 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 570 transitions, 8297 flow [2024-06-27 22:11:28,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:28,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:28,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:11:28,820 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:28,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1877120186, now seen corresponding path program 18 times [2024-06-27 22:11:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567172080] [2024-06-27 22:11:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:28,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567172080] [2024-06-27 22:11:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567172080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:32,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:11:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870328405] [2024-06-27 22:11:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:32,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:11:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:11:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:11:32,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:11:32,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 570 transitions, 8297 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:32,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:32,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:11:32,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:34,667 INFO L124 PetriNetUnfolderBase]: 2334/4600 cut-off events. [2024-06-27 22:11:34,668 INFO L125 PetriNetUnfolderBase]: For 368862/368862 co-relation queries the response was YES. [2024-06-27 22:11:34,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33486 conditions, 4600 events. 2334/4600 cut-off events. For 368862/368862 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34402 event pairs, 574 based on Foata normal form. 2/4290 useless extension candidates. Maximal degree in co-relation 33247. Up to 3851 conditions per place. [2024-06-27 22:11:34,738 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 557 selfloop transitions, 29 changer transitions 0/595 dead transitions. [2024-06-27 22:11:34,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 595 transitions, 9749 flow [2024-06-27 22:11:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:11:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:11:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 22:11:34,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 22:11:34,739 INFO L175 Difference]: Start difference. First operand has 497 places, 570 transitions, 8297 flow. Second operand 12 states and 191 transitions. [2024-06-27 22:11:34,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 595 transitions, 9749 flow [2024-06-27 22:11:38,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 595 transitions, 9645 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:38,915 INFO L231 Difference]: Finished difference. Result has 500 places, 570 transitions, 8255 flow [2024-06-27 22:11:38,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8255, PETRI_PLACES=500, PETRI_TRANSITIONS=570} [2024-06-27 22:11:38,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-27 22:11:38,915 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 570 transitions, 8255 flow [2024-06-27 22:11:38,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:38,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:38,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:11:38,916 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:38,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 72927060, now seen corresponding path program 19 times [2024-06-27 22:11:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007904455] [2024-06-27 22:11:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007904455] [2024-06-27 22:11:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007904455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:41,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:41,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:11:41,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140666236] [2024-06-27 22:11:41,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:41,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:11:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:11:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:11:41,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:11:41,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 570 transitions, 8255 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:41,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:41,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:11:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:43,324 INFO L124 PetriNetUnfolderBase]: 2013/4105 cut-off events. [2024-06-27 22:11:43,324 INFO L125 PetriNetUnfolderBase]: For 334211/334222 co-relation queries the response was YES. [2024-06-27 22:11:43,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29581 conditions, 4105 events. 2013/4105 cut-off events. For 334211/334222 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 31270 event pairs, 492 based on Foata normal form. 8/3718 useless extension candidates. Maximal degree in co-relation 29341. Up to 2834 conditions per place. [2024-06-27 22:11:43,374 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 333 selfloop transitions, 230 changer transitions 0/581 dead transitions. [2024-06-27 22:11:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 581 transitions, 9747 flow [2024-06-27 22:11:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:11:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 22:11:43,375 INFO L175 Difference]: Start difference. First operand has 500 places, 570 transitions, 8255 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:11:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 581 transitions, 9747 flow [2024-06-27 22:11:47,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 581 transitions, 9653 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 22:11:47,398 INFO L231 Difference]: Finished difference. Result has 500 places, 570 transitions, 8626 flow [2024-06-27 22:11:47,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8626, PETRI_PLACES=500, PETRI_TRANSITIONS=570} [2024-06-27 22:11:47,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-27 22:11:47,399 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 570 transitions, 8626 flow [2024-06-27 22:11:47,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:47,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:47,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:47,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:11:47,399 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:47,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash 73234270, now seen corresponding path program 19 times [2024-06-27 22:11:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749150826] [2024-06-27 22:11:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749150826] [2024-06-27 22:11:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749150826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14949210] [2024-06-27 22:11:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:49,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:49,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:11:49,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 570 transitions, 8626 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:49,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:49,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:11:49,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:51,065 INFO L124 PetriNetUnfolderBase]: 2029/4104 cut-off events. [2024-06-27 22:11:51,065 INFO L125 PetriNetUnfolderBase]: For 359690/359707 co-relation queries the response was YES. [2024-06-27 22:11:51,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30583 conditions, 4104 events. 2029/4104 cut-off events. For 359690/359707 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 31262 event pairs, 482 based on Foata normal form. 10/3724 useless extension candidates. Maximal degree in co-relation 30343. Up to 3049 conditions per place. [2024-06-27 22:11:51,128 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 402 selfloop transitions, 169 changer transitions 0/590 dead transitions. [2024-06-27 22:11:51,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 590 transitions, 10374 flow [2024-06-27 22:11:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:11:51,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 22:11:51,130 INFO L175 Difference]: Start difference. First operand has 500 places, 570 transitions, 8626 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:11:51,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 590 transitions, 10374 flow [2024-06-27 22:11:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 590 transitions, 9784 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 22:11:54,858 INFO L231 Difference]: Finished difference. Result has 499 places, 571 transitions, 8428 flow [2024-06-27 22:11:54,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8428, PETRI_PLACES=499, PETRI_TRANSITIONS=571} [2024-06-27 22:11:54,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:11:54,859 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 571 transitions, 8428 flow [2024-06-27 22:11:54,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:54,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:54,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:11:54,859 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:54,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 73224040, now seen corresponding path program 20 times [2024-06-27 22:11:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111833850] [2024-06-27 22:11:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111833850] [2024-06-27 22:11:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111833850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:11:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345142485] [2024-06-27 22:11:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:57,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:11:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:11:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:11:57,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:11:57,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 571 transitions, 8428 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:57,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:57,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:11:57,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:59,042 INFO L124 PetriNetUnfolderBase]: 2044/4184 cut-off events. [2024-06-27 22:11:59,042 INFO L125 PetriNetUnfolderBase]: For 367453/367464 co-relation queries the response was YES. [2024-06-27 22:11:59,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30511 conditions, 4184 events. 2044/4184 cut-off events. For 367453/367464 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 32069 event pairs, 499 based on Foata normal form. 10/3792 useless extension candidates. Maximal degree in co-relation 30271. Up to 3218 conditions per place. [2024-06-27 22:11:59,105 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 426 selfloop transitions, 142 changer transitions 0/586 dead transitions. [2024-06-27 22:11:59,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 586 transitions, 9732 flow [2024-06-27 22:11:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:11:59,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:11:59,106 INFO L175 Difference]: Start difference. First operand has 499 places, 571 transitions, 8428 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:11:59,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 586 transitions, 9732 flow [2024-06-27 22:12:02,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 586 transitions, 9005 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-06-27 22:12:02,921 INFO L231 Difference]: Finished difference. Result has 497 places, 572 transitions, 8043 flow [2024-06-27 22:12:02,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7720, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8043, PETRI_PLACES=497, PETRI_TRANSITIONS=572} [2024-06-27 22:12:02,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:12:02,921 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 572 transitions, 8043 flow [2024-06-27 22:12:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:02,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:02,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:02,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:12:02,922 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:02,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash -680958648, now seen corresponding path program 20 times [2024-06-27 22:12:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158333717] [2024-06-27 22:12:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158333717] [2024-06-27 22:12:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158333717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:05,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558231274] [2024-06-27 22:12:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:05,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:05,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:05,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:12:05,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 572 transitions, 8043 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:05,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:05,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:12:05,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:07,052 INFO L124 PetriNetUnfolderBase]: 2053/4194 cut-off events. [2024-06-27 22:12:07,052 INFO L125 PetriNetUnfolderBase]: For 346253/346264 co-relation queries the response was YES. [2024-06-27 22:12:07,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29108 conditions, 4194 events. 2053/4194 cut-off events. For 346253/346264 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 32062 event pairs, 498 based on Foata normal form. 8/3796 useless extension candidates. Maximal degree in co-relation 28872. Up to 2902 conditions per place. [2024-06-27 22:12:07,116 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 244 changer transitions 0/585 dead transitions. [2024-06-27 22:12:07,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 585 transitions, 9585 flow [2024-06-27 22:12:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:12:07,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:12:07,117 INFO L175 Difference]: Start difference. First operand has 497 places, 572 transitions, 8043 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:12:07,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 585 transitions, 9585 flow [2024-06-27 22:12:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 585 transitions, 9195 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 22:12:10,937 INFO L231 Difference]: Finished difference. Result has 498 places, 574 transitions, 8182 flow [2024-06-27 22:12:10,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7653, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8182, PETRI_PLACES=498, PETRI_TRANSITIONS=574} [2024-06-27 22:12:10,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-27 22:12:10,938 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 574 transitions, 8182 flow [2024-06-27 22:12:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:10,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:10,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:12:10,938 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:10,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 64892170, now seen corresponding path program 21 times [2024-06-27 22:12:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720845276] [2024-06-27 22:12:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:10,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:13,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:13,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720845276] [2024-06-27 22:12:13,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720845276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:13,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:13,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:13,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596054318] [2024-06-27 22:12:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:13,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:13,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:13,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:12:13,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 574 transitions, 8182 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:13,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:13,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:12:13,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:15,082 INFO L124 PetriNetUnfolderBase]: 2050/4158 cut-off events. [2024-06-27 22:12:15,082 INFO L125 PetriNetUnfolderBase]: For 333803/333820 co-relation queries the response was YES. [2024-06-27 22:12:15,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28762 conditions, 4158 events. 2050/4158 cut-off events. For 333803/333820 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 31788 event pairs, 496 based on Foata normal form. 9/3767 useless extension candidates. Maximal degree in co-relation 28527. Up to 3089 conditions per place. [2024-06-27 22:12:15,137 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 378 selfloop transitions, 191 changer transitions 0/588 dead transitions. [2024-06-27 22:12:15,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 588 transitions, 9436 flow [2024-06-27 22:12:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:12:15,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 22:12:15,137 INFO L175 Difference]: Start difference. First operand has 498 places, 574 transitions, 8182 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:12:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 588 transitions, 9436 flow [2024-06-27 22:12:18,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 588 transitions, 8904 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:18,627 INFO L231 Difference]: Finished difference. Result has 499 places, 574 transitions, 8036 flow [2024-06-27 22:12:18,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8036, PETRI_PLACES=499, PETRI_TRANSITIONS=574} [2024-06-27 22:12:18,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:12:18,628 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 574 transitions, 8036 flow [2024-06-27 22:12:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:18,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:18,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:12:18,628 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:18,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash 64883490, now seen corresponding path program 21 times [2024-06-27 22:12:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742486729] [2024-06-27 22:12:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:21,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:21,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742486729] [2024-06-27 22:12:21,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742486729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:21,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:12:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297822573] [2024-06-27 22:12:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:12:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:12:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:12:21,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:12:21,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 574 transitions, 8036 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:21,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:21,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:12:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:22,946 INFO L124 PetriNetUnfolderBase]: 2048/4170 cut-off events. [2024-06-27 22:12:22,947 INFO L125 PetriNetUnfolderBase]: For 302321/302335 co-relation queries the response was YES. [2024-06-27 22:12:22,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28120 conditions, 4170 events. 2048/4170 cut-off events. For 302321/302335 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31878 event pairs, 497 based on Foata normal form. 8/3776 useless extension candidates. Maximal degree in co-relation 27884. Up to 2895 conditions per place. [2024-06-27 22:12:23,006 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 332 selfloop transitions, 234 changer transitions 0/584 dead transitions. [2024-06-27 22:12:23,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 584 transitions, 9190 flow [2024-06-27 22:12:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:12:23,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:12:23,007 INFO L175 Difference]: Start difference. First operand has 499 places, 574 transitions, 8036 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:12:23,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 584 transitions, 9190 flow [2024-06-27 22:12:26,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 584 transitions, 8780 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:26,112 INFO L231 Difference]: Finished difference. Result has 501 places, 574 transitions, 8099 flow [2024-06-27 22:12:26,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7626, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8099, PETRI_PLACES=501, PETRI_TRANSITIONS=574} [2024-06-27 22:12:26,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 22:12:26,113 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 574 transitions, 8099 flow [2024-06-27 22:12:26,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:26,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:26,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:12:26,113 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:26,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash -526080618, now seen corresponding path program 16 times [2024-06-27 22:12:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956119521] [2024-06-27 22:12:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:27,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:27,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956119521] [2024-06-27 22:12:27,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956119521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:27,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:27,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:27,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626541664] [2024-06-27 22:12:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:27,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:27,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:12:27,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 574 transitions, 8099 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:27,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:27,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:12:27,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:29,285 INFO L124 PetriNetUnfolderBase]: 2388/4709 cut-off events. [2024-06-27 22:12:29,285 INFO L125 PetriNetUnfolderBase]: For 327751/327751 co-relation queries the response was YES. [2024-06-27 22:12:29,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32019 conditions, 4709 events. 2388/4709 cut-off events. For 327751/327751 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 35340 event pairs, 478 based on Foata normal form. 2/4387 useless extension candidates. Maximal degree in co-relation 31781. Up to 3804 conditions per place. [2024-06-27 22:12:29,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 524 selfloop transitions, 73 changer transitions 0/606 dead transitions. [2024-06-27 22:12:29,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 606 transitions, 9573 flow [2024-06-27 22:12:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:12:29,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:12:29,373 INFO L175 Difference]: Start difference. First operand has 501 places, 574 transitions, 8099 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:12:29,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 606 transitions, 9573 flow [2024-06-27 22:12:33,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 606 transitions, 9050 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 22:12:33,547 INFO L231 Difference]: Finished difference. Result has 499 places, 578 transitions, 7888 flow [2024-06-27 22:12:33,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7576, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7888, PETRI_PLACES=499, PETRI_TRANSITIONS=578} [2024-06-27 22:12:33,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:12:33,548 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 578 transitions, 7888 flow [2024-06-27 22:12:33,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:33,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:33,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:12:33,549 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:33,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1388165156, now seen corresponding path program 17 times [2024-06-27 22:12:33,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290990756] [2024-06-27 22:12:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:34,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:34,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290990756] [2024-06-27 22:12:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290990756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:34,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:12:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596003961] [2024-06-27 22:12:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:12:34,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:12:34,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:12:35,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:12:35,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 578 transitions, 7888 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:35,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:35,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:12:35,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:36,642 INFO L124 PetriNetUnfolderBase]: 2408/4746 cut-off events. [2024-06-27 22:12:36,642 INFO L125 PetriNetUnfolderBase]: For 339312/339312 co-relation queries the response was YES. [2024-06-27 22:12:36,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32029 conditions, 4746 events. 2408/4746 cut-off events. For 339312/339312 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35699 event pairs, 515 based on Foata normal form. 2/4430 useless extension candidates. Maximal degree in co-relation 31791. Up to 3901 conditions per place. [2024-06-27 22:12:36,706 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 514 selfloop transitions, 83 changer transitions 0/606 dead transitions. [2024-06-27 22:12:36,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 606 transitions, 9344 flow [2024-06-27 22:12:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:12:36,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:12:36,707 INFO L175 Difference]: Start difference. First operand has 499 places, 578 transitions, 7888 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:12:36,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 606 transitions, 9344 flow [2024-06-27 22:12:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 606 transitions, 9078 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:41,006 INFO L231 Difference]: Finished difference. Result has 501 places, 582 transitions, 7959 flow [2024-06-27 22:12:41,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7622, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7959, PETRI_PLACES=501, PETRI_TRANSITIONS=582} [2024-06-27 22:12:41,007 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 22:12:41,007 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 582 transitions, 7959 flow [2024-06-27 22:12:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:41,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:41,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:12:41,007 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:41,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1373687846, now seen corresponding path program 18 times [2024-06-27 22:12:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:41,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866065373] [2024-06-27 22:12:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:42,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866065373] [2024-06-27 22:12:42,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866065373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:42,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:42,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991901314] [2024-06-27 22:12:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:42,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:12:42,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 582 transitions, 7959 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:42,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:42,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:12:42,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:44,426 INFO L124 PetriNetUnfolderBase]: 2438/4800 cut-off events. [2024-06-27 22:12:44,427 INFO L125 PetriNetUnfolderBase]: For 346298/346298 co-relation queries the response was YES. [2024-06-27 22:12:44,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32556 conditions, 4800 events. 2438/4800 cut-off events. For 346298/346298 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36127 event pairs, 548 based on Foata normal form. 2/4474 useless extension candidates. Maximal degree in co-relation 32317. Up to 4065 conditions per place. [2024-06-27 22:12:44,499 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 541 selfloop transitions, 68 changer transitions 0/618 dead transitions. [2024-06-27 22:12:44,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 618 transitions, 9577 flow [2024-06-27 22:12:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:12:44,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:12:44,500 INFO L175 Difference]: Start difference. First operand has 501 places, 582 transitions, 7959 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:12:44,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 618 transitions, 9577 flow [2024-06-27 22:12:48,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 618 transitions, 9288 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:48,726 INFO L231 Difference]: Finished difference. Result has 505 places, 592 transitions, 8123 flow [2024-06-27 22:12:48,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7670, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8123, PETRI_PLACES=505, PETRI_TRANSITIONS=592} [2024-06-27 22:12:48,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 22:12:48,727 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 592 transitions, 8123 flow [2024-06-27 22:12:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:48,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:48,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:48,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:12:48,727 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:48,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 332864974, now seen corresponding path program 19 times [2024-06-27 22:12:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:48,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896684634] [2024-06-27 22:12:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896684634] [2024-06-27 22:12:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896684634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:50,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:50,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:50,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544701451] [2024-06-27 22:12:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:50,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:50,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:12:50,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 592 transitions, 8123 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:50,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:50,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:12:50,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:51,702 INFO L124 PetriNetUnfolderBase]: 2288/4664 cut-off events. [2024-06-27 22:12:51,702 INFO L125 PetriNetUnfolderBase]: For 371728/371738 co-relation queries the response was YES. [2024-06-27 22:12:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31267 conditions, 4664 events. 2288/4664 cut-off events. For 371728/371738 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 36319 event pairs, 346 based on Foata normal form. 8/4375 useless extension candidates. Maximal degree in co-relation 31026. Up to 2772 conditions per place. [2024-06-27 22:12:51,775 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 332 selfloop transitions, 124 changer transitions 0/629 dead transitions. [2024-06-27 22:12:51,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 629 transitions, 9395 flow [2024-06-27 22:12:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 22:12:51,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285285285285285 [2024-06-27 22:12:51,776 INFO L175 Difference]: Start difference. First operand has 505 places, 592 transitions, 8123 flow. Second operand 9 states and 176 transitions. [2024-06-27 22:12:51,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 629 transitions, 9395 flow [2024-06-27 22:12:56,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 629 transitions, 9123 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:56,379 INFO L231 Difference]: Finished difference. Result has 508 places, 601 transitions, 8502 flow [2024-06-27 22:12:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7851, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8502, PETRI_PLACES=508, PETRI_TRANSITIONS=601} [2024-06-27 22:12:56,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-27 22:12:56,379 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 601 transitions, 8502 flow [2024-06-27 22:12:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:56,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:56,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:56,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:12:56,379 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:56,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -882597926, now seen corresponding path program 20 times [2024-06-27 22:12:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:56,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024754275] [2024-06-27 22:12:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024754275] [2024-06-27 22:12:58,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024754275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:58,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:58,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829970591] [2024-06-27 22:12:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:58,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:58,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:12:58,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 601 transitions, 8502 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:58,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:58,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:12:58,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:00,256 INFO L124 PetriNetUnfolderBase]: 2504/4949 cut-off events. [2024-06-27 22:13:00,256 INFO L125 PetriNetUnfolderBase]: For 371049/371049 co-relation queries the response was YES. [2024-06-27 22:13:00,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34423 conditions, 4949 events. 2504/4949 cut-off events. For 371049/371049 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37706 event pairs, 573 based on Foata normal form. 2/4615 useless extension candidates. Maximal degree in co-relation 34180. Up to 4155 conditions per place. [2024-06-27 22:13:00,329 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 541 selfloop transitions, 79 changer transitions 0/629 dead transitions. [2024-06-27 22:13:00,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 629 transitions, 10034 flow [2024-06-27 22:13:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:13:00,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:13:00,330 INFO L175 Difference]: Start difference. First operand has 508 places, 601 transitions, 8502 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:13:00,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 629 transitions, 10034 flow [2024-06-27 22:13:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 629 transitions, 9797 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:04,953 INFO L231 Difference]: Finished difference. Result has 515 places, 603 transitions, 8520 flow [2024-06-27 22:13:04,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8273, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8520, PETRI_PLACES=515, PETRI_TRANSITIONS=603} [2024-06-27 22:13:04,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 474 predicate places. [2024-06-27 22:13:04,953 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 603 transitions, 8520 flow [2024-06-27 22:13:04,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:04,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:04,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:04,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:13:04,954 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:04,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash -873521126, now seen corresponding path program 21 times [2024-06-27 22:13:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058564378] [2024-06-27 22:13:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058564378] [2024-06-27 22:13:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058564378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:06,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:06,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233874207] [2024-06-27 22:13:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:06,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:06,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:06,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:13:06,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 603 transitions, 8520 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:06,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:06,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:13:06,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:08,503 INFO L124 PetriNetUnfolderBase]: 2528/5003 cut-off events. [2024-06-27 22:13:08,503 INFO L125 PetriNetUnfolderBase]: For 360754/360754 co-relation queries the response was YES. [2024-06-27 22:13:08,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34385 conditions, 5003 events. 2528/5003 cut-off events. For 360754/360754 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 38238 event pairs, 570 based on Foata normal form. 2/4668 useless extension candidates. Maximal degree in co-relation 34141. Up to 4167 conditions per place. [2024-06-27 22:13:08,580 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 546 selfloop transitions, 79 changer transitions 0/634 dead transitions. [2024-06-27 22:13:08,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 634 transitions, 10052 flow [2024-06-27 22:13:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:13:08,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:13:08,581 INFO L175 Difference]: Start difference. First operand has 515 places, 603 transitions, 8520 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:13:08,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 634 transitions, 10052 flow [2024-06-27 22:13:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 634 transitions, 9885 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:12,767 INFO L231 Difference]: Finished difference. Result has 517 places, 605 transitions, 8586 flow [2024-06-27 22:13:12,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8353, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8586, PETRI_PLACES=517, PETRI_TRANSITIONS=605} [2024-06-27 22:13:12,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-27 22:13:12,768 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 605 transitions, 8586 flow [2024-06-27 22:13:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:12,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:12,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:13:12,768 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:12,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -682402406, now seen corresponding path program 22 times [2024-06-27 22:13:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:12,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96449121] [2024-06-27 22:13:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:12,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:14,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96449121] [2024-06-27 22:13:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96449121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:14,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755936937] [2024-06-27 22:13:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:14,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:13:14,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 605 transitions, 8586 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:14,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:14,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:13:14,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:16,709 INFO L124 PetriNetUnfolderBase]: 2548/5036 cut-off events. [2024-06-27 22:13:16,710 INFO L125 PetriNetUnfolderBase]: For 366730/366730 co-relation queries the response was YES. [2024-06-27 22:13:16,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34841 conditions, 5036 events. 2548/5036 cut-off events. For 366730/366730 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 38534 event pairs, 588 based on Foata normal form. 2/4696 useless extension candidates. Maximal degree in co-relation 34596. Up to 4218 conditions per place. [2024-06-27 22:13:16,785 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 524 selfloop transitions, 100 changer transitions 0/633 dead transitions. [2024-06-27 22:13:16,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 633 transitions, 10108 flow [2024-06-27 22:13:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:13:16,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:13:16,786 INFO L175 Difference]: Start difference. First operand has 517 places, 605 transitions, 8586 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:13:16,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 633 transitions, 10108 flow [2024-06-27 22:13:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 633 transitions, 9937 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:20,883 INFO L231 Difference]: Finished difference. Result has 519 places, 609 transitions, 8790 flow [2024-06-27 22:13:20,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8415, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8790, PETRI_PLACES=519, PETRI_TRANSITIONS=609} [2024-06-27 22:13:20,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:13:20,883 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 609 transitions, 8790 flow [2024-06-27 22:13:20,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:20,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:20,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:20,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:13:20,883 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:20,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1506801618, now seen corresponding path program 23 times [2024-06-27 22:13:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:20,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507417618] [2024-06-27 22:13:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:20,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507417618] [2024-06-27 22:13:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507417618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:22,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:22,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:22,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557954325] [2024-06-27 22:13:22,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:22,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:22,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:22,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:13:22,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 609 transitions, 8790 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:22,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:22,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:13:22,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:24,315 INFO L124 PetriNetUnfolderBase]: 2575/5084 cut-off events. [2024-06-27 22:13:24,315 INFO L125 PetriNetUnfolderBase]: For 377394/377394 co-relation queries the response was YES. [2024-06-27 22:13:24,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35483 conditions, 5084 events. 2575/5084 cut-off events. For 377394/377394 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 38864 event pairs, 553 based on Foata normal form. 2/4745 useless extension candidates. Maximal degree in co-relation 35237. Up to 4263 conditions per place. [2024-06-27 22:13:24,390 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 562 selfloop transitions, 68 changer transitions 0/639 dead transitions. [2024-06-27 22:13:24,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 639 transitions, 10338 flow [2024-06-27 22:13:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:13:24,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:13:24,392 INFO L175 Difference]: Start difference. First operand has 519 places, 609 transitions, 8790 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:13:24,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 639 transitions, 10338 flow [2024-06-27 22:13:28,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 639 transitions, 10003 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:28,855 INFO L231 Difference]: Finished difference. Result has 521 places, 615 transitions, 8797 flow [2024-06-27 22:13:28,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8455, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8797, PETRI_PLACES=521, PETRI_TRANSITIONS=615} [2024-06-27 22:13:28,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-27 22:13:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 615 transitions, 8797 flow [2024-06-27 22:13:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:28,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:28,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:13:28,856 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:28,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1594564788, now seen corresponding path program 24 times [2024-06-27 22:13:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528309059] [2024-06-27 22:13:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528309059] [2024-06-27 22:13:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528309059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:30,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:30,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341006836] [2024-06-27 22:13:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:30,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:30,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:13:30,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 615 transitions, 8797 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:30,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:30,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:13:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:32,531 INFO L124 PetriNetUnfolderBase]: 2613/5165 cut-off events. [2024-06-27 22:13:32,532 INFO L125 PetriNetUnfolderBase]: For 388107/388107 co-relation queries the response was YES. [2024-06-27 22:13:32,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36085 conditions, 5165 events. 2613/5165 cut-off events. For 388107/388107 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 39742 event pairs, 582 based on Foata normal form. 2/4821 useless extension candidates. Maximal degree in co-relation 35838. Up to 4362 conditions per place. [2024-06-27 22:13:32,607 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 574 selfloop transitions, 65 changer transitions 0/648 dead transitions. [2024-06-27 22:13:32,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 648 transitions, 10444 flow [2024-06-27 22:13:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:13:32,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:13:32,608 INFO L175 Difference]: Start difference. First operand has 521 places, 615 transitions, 8797 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:13:32,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 648 transitions, 10444 flow [2024-06-27 22:13:37,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 648 transitions, 10210 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:37,143 INFO L231 Difference]: Finished difference. Result has 525 places, 621 transitions, 8870 flow [2024-06-27 22:13:37,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8563, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8870, PETRI_PLACES=525, PETRI_TRANSITIONS=621} [2024-06-27 22:13:37,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 484 predicate places. [2024-06-27 22:13:37,144 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 621 transitions, 8870 flow [2024-06-27 22:13:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:37,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:37,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:37,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:13:37,144 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:37,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1504898838, now seen corresponding path program 25 times [2024-06-27 22:13:37,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:37,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297695349] [2024-06-27 22:13:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:37,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297695349] [2024-06-27 22:13:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297695349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082947600] [2024-06-27 22:13:38,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:38,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:38,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:13:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 621 transitions, 8870 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:38,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:13:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:40,588 INFO L124 PetriNetUnfolderBase]: 2650/5241 cut-off events. [2024-06-27 22:13:40,588 INFO L125 PetriNetUnfolderBase]: For 395157/395157 co-relation queries the response was YES. [2024-06-27 22:13:40,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36683 conditions, 5241 events. 2650/5241 cut-off events. For 395157/395157 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 40517 event pairs, 550 based on Foata normal form. 2/4890 useless extension candidates. Maximal degree in co-relation 36435. Up to 4318 conditions per place. [2024-06-27 22:13:40,671 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 578 selfloop transitions, 70 changer transitions 0/657 dead transitions. [2024-06-27 22:13:40,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 657 transitions, 10521 flow [2024-06-27 22:13:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:13:40,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:13:40,672 INFO L175 Difference]: Start difference. First operand has 525 places, 621 transitions, 8870 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:13:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 657 transitions, 10521 flow Killed by 15